{"id":2163,"date":"2025-08-22T15:08:56","date_gmt":"2025-08-22T07:08:56","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&#038;p=2163"},"modified":"2025-08-22T15:35:44","modified_gmt":"2025-08-22T07:35:44","slug":"types-of-surge-protection-devices","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/de\/blog\/types-of-surge-protection-devices\/","title":{"rendered":"Verschiedene Arten von \u00dcberspannungsschutzger\u00e4ten (SPD)"},"content":{"rendered":"<h2 data-start=\"384\" data-end=\"404\">1. Einf\u00fchrung<\/h2>\r\n<p data-start=\"405\" data-end=\"685\">\u00dcberspannungen sind in modernen elektrischen Systemen lautlose Killer. Von der Haushaltselektronik bis zur industriellen Automatisierung und Solaranlagen kann bereits eine einzige vor\u00fcbergehende \u00dcberspannung zu Ausfallzeiten, kostspieligen Reparaturen oder Ger\u00e4teausf\u00e4llen f\u00fchren. Die L\u00f6sung? <strong data-start=\"647\" data-end=\"683\"><span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.britecelectric.com\/de\/product-category\/ac-power-surge-protection\/\" target=\"_blank\" rel=\"noopener\">\u00dcberspannungsschutzger\u00e4te (SPDs)<\/a><\/span>.<\/strong><\/p>\r\n<p data-start=\"687\" data-end=\"952\">In diesem Leitfaden werden wir die verschiedenen Arten von \u00dcberspannungsschutzger\u00e4ten aufschl\u00fcsseln, ihre Funktionsweise erkl\u00e4ren und ihre Anwendungen vergleichen. Am Ende wissen Sie genau, welche SPD-Typen zu Ihrem System passen \u2013 egal, ob es sich um ein Eigenheim, ein Rechenzentrum oder eine PV-Anlage handelt.<\/p>\r\n\r\n<h2 data-start=\"959\" data-end=\"1001\">2. Was sind \u00dcberspannungsschutzger\u00e4te?<\/h2>\r\n<p data-start=\"1002\" data-end=\"1283\">A <a href=\"https:\/\/www.britecelectric.com\/de\/product-category\/ac-power-surge-protection\/\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\"><strong data-start=\"1004\" data-end=\"1037\">\u00dcberspannungsschutzger\u00e4t (SPD)<\/strong> <\/span><\/a>ist eine Sicherheitskomponente, die in einem elektrischen System installiert wird, um transiente \u00dcberspannungen zu begrenzen, die durch Blitzeinschl\u00e4ge, Schaltereignisse oder Netzst\u00f6rungen verursacht werden. Es leitet \u00dcberspannungsenergie sicher zur Erde ab und sch\u00fctzt so angeschlossene Ger\u00e4te.<\/p>\r\n<p data-start=\"1285\" data-end=\"1440\">Stellen Sie sich ein SPD wie ein Druckentlastungsventil vor: Es stoppt den Drucksto\u00df nicht, aber es leitet die \u00fcbersch\u00fcssige Energie von der empfindlichen Elektronik weg.<\/p>\r\n<p data-start=\"1285\" data-end=\"1440\"><a href=\"https:\/\/www.britecelectric.com\/de\/product-category\/ac-power-surge-protection\/\" rel=\"attachment wp-att-2160\"><img class=\"alignnone wp-image-2160\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/BR-20-4P-1Type-2-Surge-Protection-Device.jpg-1024x1024.webp\" alt=\"Arten von \u00dcberspannungsschutzger\u00e4ten\" width=\"705\" height=\"705\" \/><\/a><\/p>\r\n\r\n<h2 data-start=\"1447\" data-end=\"1486\">3. Wie funktioniert der \u00dcberspannungsschutz?<\/h2>\r\n<p data-start=\"1487\" data-end=\"1734\">SPDs basieren auf Komponenten wie Metalloxid-Varistoren (MOVs), Gasentladungsr\u00f6hren (GDTs) und Funkenstrecken. Wenn die Spannung einen sicheren Schwellenwert (Uc) \u00fcberschreitet, schaltet das SPD in den Leitungsmodus und begrenzt die \u00dcberspannung auf eine niedrigere Restspannung (Up).<\/p>\r\n<p data-start=\"1736\" data-end=\"1767\">Zu verstehende Schl\u00fcsselparameter:<\/p>\r\n\r\n<ul data-start=\"1768\" data-end=\"2141\">\r\n \t<li data-start=\"1768\" data-end=\"1853\">\r\n<p data-start=\"1770\" data-end=\"1853\"><strong data-start=\"1770\" data-end=\"1816\">Uc (Maximale Dauerbetriebsspannung):<\/strong> die normale Spannung, die das SPD verarbeiten kann.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1854\" data-end=\"1945\">\r\n<p data-start=\"1856\" data-end=\"1945\"><strong data-start=\"1856\" data-end=\"1890\">Up (Spannungsschutzstufe):<\/strong> Klemmspannung, die nachgeschaltete Ger\u00e4te \u201csehen\u201d k\u00f6nnen.\u201d<\/p>\r\n<\/li>\r\n \t<li data-start=\"1946\" data-end=\"2048\">\r\n<p data-start=\"1948\" data-end=\"2048\"><strong data-start=\"1948\" data-end=\"2000\">In \/ Imax (Nenn- und Maximalentladestrom):<\/strong> wie viel Sto\u00dfstrom das Ger\u00e4t aufnehmen kann.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2049\" data-end=\"2141\">\r\n<p data-start=\"2051\" data-end=\"2141\"><strong data-start=\"2051\" data-end=\"2078\">Iimp (Impulsstrom):<\/strong> spezifisch f\u00fcr Typ 1, der Blitzwellenformen darstellt.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<a href=\"https:\/\/www.britecelectric.com\/de\/attachment\/spd-install\/\" rel=\"attachment wp-att-2159\"><img class=\"alignnone size-full wp-image-2159\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/SPD-install.jpg\" alt=\"\" width=\"745\" height=\"609\" \/><\/a>\r\n<h2 data-start=\"486\" data-end=\"527\">4. Arten von \u00dcberspannungsschutzger\u00e4ten<\/h2>\r\n<p data-start=\"529\" data-end=\"821\">Das Verst\u00e4ndnis der SPD-Typen ist der Schl\u00fcssel zum Entwurf eines mehrschichtigen \u00dcberspannungsschutzes. Internationale Standards wie z <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/65314\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"639\" data-end=\"660\">IEC 61643-11 (AC)<\/strong><\/a>, <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/26931\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"662\" data-end=\"686\">IEC 61643-31 (DC\/PV)<\/strong><\/a>, Und <a href=\"https:\/\/www.nemasurge.org\/ul-1449-transient-voltage-surge-suppressors\/\" target=\"_blank\" rel=\"nofollow noopener\"><strong data-start=\"692\" data-end=\"719\">UL 1449 (Nordamerika)<\/strong> <\/a>Definieren Sie verschiedene Klassen basierend auf Testwellenformen, Energiekapazit\u00e4t und Installationsort.<\/p>\r\n<p data-start=\"823\" data-end=\"975\">Im Folgenden werden die verschiedenen Arten von \u00dcberspannungsschutzger\u00e4ten (SPDs), die Ihnen begegnen, mit ihren technischen Rollen und Anwendungshinweisen aufgeschl\u00fcsselt.<\/p>\r\n\r\n<h3 data-start=\"982\" data-end=\"1038\">4.1 SPDs vom Typ 1 (IEC 61643-11, Klasse I, 10\/350 \u00b5s)<\/h3>\r\n<ul data-start=\"1039\" data-end=\"1975\">\r\n \t<li data-start=\"1039\" data-end=\"1201\">\r\n<p data-start=\"1041\" data-end=\"1201\"><strong data-start=\"1041\" data-end=\"1056\">Definition:<\/strong> Entwickelt, um Teilblitzstr\u00f6me abzuleiten. Getestet mit der 10\/350-\u00b5s-Impulswellenform (Iimp), die einen direkten Blitzeinschlag darstellt.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1202\" data-end=\"1383\">\r\n<p data-start=\"1204\" data-end=\"1383\"><strong data-start=\"1204\" data-end=\"1227\">Installationsort:<\/strong> Serviceeingang, normalerweise vor dem Hauptverteiler. Wird h\u00e4ufig in Geb\u00e4uden verwendet, die mit einem externen Blitzschutzsystem (LPS) ausgestattet sind.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1384\" data-end=\"1658\">\r\n<p data-start=\"1386\" data-end=\"1407\"><strong data-start=\"1386\" data-end=\"1405\">Schl\u00fcsselparameter:<\/strong><\/p>\r\n\r\n<ul data-start=\"1410\" data-end=\"1658\">\r\n \t<li data-start=\"1410\" data-end=\"1475\">\r\n<p data-start=\"1412\" data-end=\"1475\">Iimp (Impulsstrom): Bemessungs-Blitzstromkapazit\u00e4t.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1478\" data-end=\"1571\">\r\n<p data-start=\"1480\" data-end=\"1571\">Uc (Maximale Dauerbetriebsspannung): stellt sicher, dass im Normalbetrieb keine Sch\u00e4den entstehen.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1574\" data-end=\"1658\">\r\n<p data-start=\"1576\" data-end=\"1658\">Up (Spannungsschutzpegel): Restspannung, die von nachgeschalteten Schaltkreisen wahrgenommen wird.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1659\" data-end=\"1731\">\r\n<p data-start=\"1661\" data-end=\"1731\"><strong data-start=\"1661\" data-end=\"1681\">Verwendete Technologie:<\/strong> Funkenstrecken, Hochleistungs-MOVs oder Hybridkonstruktionen.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1732\" data-end=\"1862\">\r\n<p data-start=\"1734\" data-end=\"1750\"><strong data-start=\"1734\" data-end=\"1748\">Anwendungsf\u00e4lle:<\/strong><\/p>\r\n\r\n<ul data-start=\"1753\" data-end=\"1862\">\r\n \t<li data-start=\"1753\" data-end=\"1806\">\r\n<p data-start=\"1755\" data-end=\"1806\">Industrieanlagen, Telekommunikationst\u00fcrme, Krankenh\u00e4user.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1809\" data-end=\"1862\">\r\n<p data-start=\"1811\" data-end=\"1862\">Hohe Geb\u00e4ude in Regionen mit hoher Blitzdichte.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1863\" data-end=\"1975\">\r\n<p data-start=\"1865\" data-end=\"1975\"><strong data-start=\"1865\" data-end=\"1877\">Beispiel:<\/strong> Eine Fabrik mit Blitzableitern auf dem Dach ben\u00f6tigt SPDs vom Typ 1 an der Haupteingangsversorgung.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1982\" data-end=\"2037\">4.2 Typ-2-SPDs (IEC 61643-11, Klasse II, 8\/20 \u00b5s)<\/h3>\r\n<ul data-start=\"2038\" data-end=\"2824\">\r\n \t<li data-start=\"2038\" data-end=\"2167\">\r\n<p data-start=\"2040\" data-end=\"2167\"><strong data-start=\"2040\" data-end=\"2055\">Definition:<\/strong> Bew\u00e4ltigt Schaltst\u00f6\u00dfe und indirekte Blitzeffekte. Getestet mit 8\/20 \u00b5s Stromwellenform (In, Imax).<\/p>\r\n<\/li>\r\n \t<li data-start=\"2168\" data-end=\"2248\">\r\n<p data-start=\"2170\" data-end=\"2248\"><strong data-start=\"2170\" data-end=\"2193\">Installationsort:<\/strong> Haupt- oder Unterverteiler innerhalb der Anlage.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2249\" data-end=\"2496\">\r\n<p data-start=\"2251\" data-end=\"2272\"><strong data-start=\"2251\" data-end=\"2270\">Schl\u00fcsselparameter:<\/strong><\/p>\r\n\r\n<ul data-start=\"2275\" data-end=\"2496\">\r\n \t<li data-start=\"2275\" data-end=\"2347\">\r\n<p data-start=\"2277\" data-end=\"2347\">In (Nennentladestrom): Best\u00e4ndigkeit bei mehreren \u00dcberspannungen.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2350\" data-end=\"2417\">\r\n<p data-start=\"2352\" data-end=\"2417\">Imax (Maximaler Entladestrom): maximale Sto\u00dfstromf\u00e4higkeit.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2420\" data-end=\"2496\">\r\n<p data-start=\"2422\" data-end=\"2496\">Oben: Muss sowohl mit Upstream-Typ 1 als auch mit Downstream-Typ 3 koordiniert werden.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2497\" data-end=\"2578\">\r\n<p data-start=\"2499\" data-end=\"2578\"><strong data-start=\"2499\" data-end=\"2519\">Verwendete Technologie:<\/strong> MOV-basierte Module, oft steckbar f\u00fcr einfachen Austausch.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2579\" data-end=\"2716\">\r\n<p data-start=\"2581\" data-end=\"2597\"><strong data-start=\"2581\" data-end=\"2595\">Anwendungsf\u00e4lle:<\/strong><\/p>\r\n\r\n<ul data-start=\"2600\" data-end=\"2716\">\r\n \t<li data-start=\"2600\" data-end=\"2655\">\r\n<p data-start=\"2602\" data-end=\"2655\">Wohnh\u00e4user, B\u00fcrogeb\u00e4ude, Einzelhandelsgesch\u00e4fte.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2658\" data-end=\"2716\">\r\n<p data-start=\"2660\" data-end=\"2716\">Standardschutz in Bereichen mit m\u00e4\u00dfigem \u00dcberspannungsrisiko.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2717\" data-end=\"2824\">\r\n<p data-start=\"2719\" data-end=\"2824\"><strong data-start=\"2719\" data-end=\"2731\">Beispiel:<\/strong> Ein kleines B\u00fcro ohne externes LPS w\u00fcrde typischerweise Typ-2-SPDs in der Hauptplatine verwenden.<\/p>\r\n<\/li>\r\n<\/ul>\r\nM\u00f6chten Sie eine detaillierte Aufschl\u00fcsselung? Lesen Sie unseren vollst\u00e4ndigen Leitfaden: <span style=\"text-decoration: underline;\"><em><strong data-start=\"1021\" data-end=\"1147\"><a class=\"decorated-link\" href=\"https:\/\/www.britecelectric.com\/de\/blog\/what-is-a-type-2-surge-protection-device\/\" target=\"_blank\" rel=\"noopener\" data-start=\"1023\" data-end=\"1145\">Was ist ein \u00dcberspannungsschutzger\u00e4t vom Typ 2?<\/a><\/strong><\/em><\/span>\r\n<h3 data-start=\"2831\" data-end=\"2890\">4.3 SPDs vom Typ 3 (IEC 61643-11, Klasse III, Combo-Welle)<\/h3>\r\n<ul data-start=\"2891\" data-end=\"3555\">\r\n \t<li data-start=\"2891\" data-end=\"3022\">\r\n<p data-start=\"2893\" data-end=\"3022\"><strong data-start=\"2893\" data-end=\"2908\">Definition:<\/strong> Feiner Schutz f\u00fcr Endger\u00e4te. Getestet mit Kombinationswelle (1,2\/50 \u00b5s Spannung + 8\/20 \u00b5s Strom).<\/p>\r\n<\/li>\r\n \t<li data-start=\"3023\" data-end=\"3126\">\r\n<p data-start=\"3025\" data-end=\"3126\"><strong data-start=\"3025\" data-end=\"3048\">Installationsort:<\/strong> M\u00f6glichst nahe am gesch\u00fctzten Ger\u00e4t (Steckdose, Ger\u00e4teeingang).<\/p>\r\n<\/li>\r\n \t<li data-start=\"3127\" data-end=\"3273\">\r\n<p data-start=\"3129\" data-end=\"3150\"><strong data-start=\"3129\" data-end=\"3148\">Schl\u00fcsselparameter:<\/strong><\/p>\r\n\r\n<ul data-start=\"3153\" data-end=\"3273\">\r\n \t<li data-start=\"3153\" data-end=\"3216\">\r\n<p data-start=\"3155\" data-end=\"3216\">Oben: Sehr niedriges Klemmniveau zum Schutz empfindlicher Lasten.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3219\" data-end=\"3273\">\r\n<p data-start=\"3221\" data-end=\"3273\">Muss in Abstimmung mit Upstream-Typ 2 verwendet werden.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"3274\" data-end=\"3348\">\r\n<p data-start=\"3276\" data-end=\"3348\"><strong data-start=\"3276\" data-end=\"3296\">Verwendete Technologie:<\/strong> MOVs kombiniert mit Filtern f\u00fcr zus\u00e4tzliche D\u00e4mpfung.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3349\" data-end=\"3435\">\r\n<p data-start=\"3351\" data-end=\"3367\"><strong data-start=\"3351\" data-end=\"3365\">Anwendungsf\u00e4lle:<\/strong><\/p>\r\n\r\n<ul data-start=\"3370\" data-end=\"3435\">\r\n \t<li data-start=\"3370\" data-end=\"3435\">\r\n<p data-start=\"3372\" data-end=\"3435\">Computer, LED-Treiber, medizinische Elektronik und Steuerungssysteme.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"3436\" data-end=\"3555\">\r\n<p data-start=\"3438\" data-end=\"3555\"><strong data-start=\"3438\" data-end=\"3450\">Beispiel:<\/strong> F\u00fcr ein Krankenhaus-MRT-Ger\u00e4t ist ein SPD vom Typ 3 in der N\u00e4he des Ger\u00e4ts erforderlich, das mit dem vorgeschalteten Typ 2 zusammenarbeitet.<\/p>\r\n<\/li>\r\n<\/ul>\r\nErfahren Sie mehr in unserem speziellen Artikel: <span style=\"text-decoration: underline;\"><em><strong data-start=\"1474\" data-end=\"1584\"><a class=\"decorated-link\" href=\"https:\/\/www.britecelectric.com\/de\/blog\/what-is-a-type-3-surge-protector\/\" target=\"_blank\" rel=\"noopener\" data-start=\"1476\" data-end=\"1582\">Was ist ein \u00dcberspannungsschutz vom Typ 3?<\/a><\/strong><\/em><\/span>\r\n<h3 data-start=\"3562\" data-end=\"3594\">4.4 T1+T2-Kombinations-SPDs<\/h3>\r\n<ul data-start=\"3595\" data-end=\"4178\">\r\n \t<li data-start=\"3595\" data-end=\"3710\">\r\n<p data-start=\"3597\" data-end=\"3710\"><strong data-start=\"3597\" data-end=\"3612\">Definition:<\/strong> Eine einzelne SPD-Einheit, getestet f\u00fcr Wellenformen der Klasse I (10\/350 \u00b5s) und der Klasse II (8\/20 \u00b5s).<\/p>\r\n<\/li>\r\n \t<li data-start=\"3711\" data-end=\"3804\">\r\n<p data-start=\"3713\" data-end=\"3804\"><strong data-start=\"3713\" data-end=\"3725\">Nutzen:<\/strong> Sch\u00fctzt sowohl vor direktem Blitzeinschlag als auch vor Schalt\u00fcberspannungen in einem Ger\u00e4t.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3805\" data-end=\"3895\">\r\n<p data-start=\"3807\" data-end=\"3895\"><strong data-start=\"3807\" data-end=\"3830\">Installationsort:<\/strong> Serviceeingang, wenn der Platz oder das Budget mehrere Ger\u00e4te begrenzt.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3896\" data-end=\"4076\">\r\n<p data-start=\"3898\" data-end=\"3914\"><strong data-start=\"3898\" data-end=\"3912\">Anwendungsf\u00e4lle:<\/strong><\/p>\r\n\r\n<ul data-start=\"3917\" data-end=\"4076\">\r\n \t<li data-start=\"3917\" data-end=\"3996\">\r\n<p data-start=\"3919\" data-end=\"3996\">Mittelgro\u00dfe Gewerbe- oder Wohngeb\u00e4ude ben\u00f6tigen kompakte L\u00f6sungen.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3999\" data-end=\"4076\">\r\n<p data-start=\"4001\" data-end=\"4076\">Standorte, an denen die Koordination zwischen den einzelnen Typen 1 und 2 schwierig ist.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4077\" data-end=\"4178\">\r\n<p data-start=\"4079\" data-end=\"4178\"><strong data-start=\"4079\" data-end=\"4091\">Beispiel:<\/strong> A shopping mall's main switchboard may install a T1+T2 SPD to simplify protection.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4185\" data-end=\"4217\">4.5 T2+T3-Kombinations-SPDs<\/h3>\r\n<ul data-start=\"4218\" data-end=\"4676\">\r\n \t<li data-start=\"4218\" data-end=\"4299\">\r\n<p data-start=\"4220\" data-end=\"4299\"><strong data-start=\"4220\" data-end=\"4235\">Definition:<\/strong> Hybridger\u00e4te werden auf die Leistung der Klassen II und III getestet.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4300\" data-end=\"4374\">\r\n<p data-start=\"4302\" data-end=\"4374\"><strong data-start=\"4302\" data-end=\"4314\">Nutzen:<\/strong> Bietet sowohl Schutz auf Verteilungsebene als auch auf Terminalebene.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4375\" data-end=\"4477\">\r\n<p data-start=\"4377\" data-end=\"4477\"><strong data-start=\"4377\" data-end=\"4400\">Installationsort:<\/strong> Unterschr\u00e4nke in der N\u00e4he empfindlicher Lasten, insbesondere wenn die Kabell\u00e4nge 10 m \u00fcberschreitet.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4478\" data-end=\"4559\">\r\n<p data-start=\"4480\" data-end=\"4496\"><strong data-start=\"4480\" data-end=\"4494\">Anwendungsf\u00e4lle:<\/strong><\/p>\r\n\r\n<ul data-start=\"4499\" data-end=\"4559\">\r\n \t<li data-start=\"4499\" data-end=\"4559\">\r\n<p data-start=\"4501\" data-end=\"4559\">Rechenzentren, Serverr\u00e4ume, industrielle Schaltschr\u00e4nke.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4560\" data-end=\"4676\">\r\n<p data-start=\"4562\" data-end=\"4676\"><strong data-start=\"4562\" data-end=\"4574\">Beispiel:<\/strong> Eine Fabrikautomationslinie mit langen Kabelwegen zu SPS kann ein T2+T3-SPD in der N\u00e4he der SPS-Schalttafeln verwenden.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4683\" data-end=\"4734\">4.6 SPDs vom Typ 4 (UL 1449, nur Nordamerika)<\/h3>\r\n<ul data-start=\"4735\" data-end=\"5324\">\r\n \t<li data-start=\"4735\" data-end=\"4856\">\r\n<p data-start=\"4737\" data-end=\"4856\"><strong data-start=\"4737\" data-end=\"4762\">Definition (UL 1449):<\/strong> Komponentenbaugruppen sind nicht als eigenst\u00e4ndige Ger\u00e4te gedacht, sondern in OEM-Ger\u00e4te integriert.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4857\" data-end=\"5012\">\r\n<p data-start=\"4859\" data-end=\"4879\"><strong data-start=\"4859\" data-end=\"4877\">Unterkategorien:<\/strong><\/p>\r\n\r\n<ul data-start=\"4882\" data-end=\"5012\">\r\n \t<li data-start=\"4882\" data-end=\"4965\">\r\n<p data-start=\"4884\" data-end=\"4965\">Typ-4-Komponentenbaugruppen (CA): vorverpackte SPD-Teile f\u00fcr Hersteller.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4968\" data-end=\"5012\">\r\n<p data-start=\"4970\" data-end=\"5012\">Komponenten vom Typ 5: Roh-MOVs oder GDTs.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5013\" data-end=\"5099\">\r\n<p data-start=\"5015\" data-end=\"5099\"><strong data-start=\"5015\" data-end=\"5038\">Installationsort:<\/strong> In Ger\u00e4ten, Netzteilen oder ma\u00dfgeschneiderten Panels.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5100\" data-end=\"5230\">\r\n<p data-start=\"5102\" data-end=\"5118\"><strong data-start=\"5102\" data-end=\"5116\">Anwendungsf\u00e4lle:<\/strong><\/p>\r\n\r\n<ul data-start=\"5121\" data-end=\"5230\">\r\n \t<li data-start=\"5121\" data-end=\"5166\">\r\n<p data-start=\"5123\" data-end=\"5166\">OEMs entwickeln \u00fcberspannungsgesch\u00fctzte Ger\u00e4te.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5169\" data-end=\"5230\">\r\n<p data-start=\"5171\" data-end=\"5230\">Spezialisierte Industrieausr\u00fcstung auf dem nordamerikanischen Markt.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5231\" data-end=\"5324\">\r\n<p data-start=\"5233\" data-end=\"5324\"><strong data-start=\"5233\" data-end=\"5245\">Beispiel:<\/strong> Ein USV-Hersteller integriert SPD-Baugruppen vom Typ 4 in seine Produkte.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5331\" data-end=\"5382\">4,7 PV\/DC-SPDs (IEC 61643-31, bis zu 1500 VDC)<\/h3>\r\n<ul data-start=\"5383\" data-end=\"6082\">\r\n \t<li data-start=\"5383\" data-end=\"5474\">\r\n<p data-start=\"5385\" data-end=\"5474\"><strong data-start=\"5385\" data-end=\"5400\">Definition:<\/strong> \u00dcberspannungsschutzger\u00e4te f\u00fcr Photovoltaik- und Gleichstromkreise.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5475\" data-end=\"5555\">\r\n<p data-start=\"5477\" data-end=\"5555\"><strong data-start=\"5477\" data-end=\"5496\">Teststandards:<\/strong> IEC 61643-31 legt Anforderungen f\u00fcr Gleichstromanwendungen fest.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5556\" data-end=\"5647\">\r\n<p data-start=\"5558\" data-end=\"5647\"><strong data-start=\"5558\" data-end=\"5581\">Installationsort:<\/strong> PV-Array-Anschlussk\u00e4sten, Wechselrichter und DC-Verteiler.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5648\" data-end=\"5876\">\r\n<p data-start=\"5650\" data-end=\"5671\"><strong data-start=\"5650\" data-end=\"5669\">Schl\u00fcsselparameter:<\/strong><\/p>\r\n\r\n<ul data-start=\"5674\" data-end=\"5876\">\r\n \t<li data-start=\"5674\" data-end=\"5740\">\r\n<p data-start=\"5676\" data-end=\"5740\">Ucpv: Bemessungsdauer-PV-Spannung (600 V, 1000 V, 1500 V).<\/p>\r\n<\/li>\r\n \t<li data-start=\"5743\" data-end=\"5796\">\r\n<p data-start=\"5745\" data-end=\"5796\">In \/ Imax: Sto\u00dfstrombehandlung auf der DC-Seite.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5799\" data-end=\"5876\">\r\n<p data-start=\"5801\" data-end=\"5876\">Reaktionszeit: muss f\u00fcr halbleiterbasierte Wechselrichter schnell genug sein.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5877\" data-end=\"5976\">\r\n<p data-start=\"5879\" data-end=\"5895\"><strong data-start=\"5879\" data-end=\"5893\">Anwendungsf\u00e4lle:<\/strong><\/p>\r\n\r\n<ul data-start=\"5898\" data-end=\"5976\">\r\n \t<li data-start=\"5898\" data-end=\"5976\">\r\n<p data-start=\"5900\" data-end=\"5976\">Solarparks im Versorgungsma\u00dfstab, PV-Dachanlagen, Batteriespeicher.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5977\" data-end=\"6082\">\r\n<p data-start=\"5979\" data-end=\"6082\"><strong data-start=\"5979\" data-end=\"5991\">Beispiel:<\/strong> Es wird ein Solarpark mit 1500 VDC ben\u00f6tigt <a href=\"https:\/\/www.britecelectric.com\/de\/product_category\/pv-surge-protection-type-1-type-2\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"6024\" data-end=\"6041\">T1+T2 PV-SPDs<\/strong><\/a> an Generatoranschlussk\u00e4sten und Wechselrichtereing\u00e4ngen.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"6089\" data-end=\"6304\"><strong data-start=\"6091\" data-end=\"6115\">Profi-Tipp f\u00fcr Leser:<\/strong> Verwenden Sie immer a <em data-start=\"6129\" data-end=\"6153\">koordiniertes SPD-System<\/em>. Typ 1 am Eingang, Typ 2 an Unterschalttafeln und Typ 3 in der N\u00e4he kritischer Lasten. F\u00fcgen Sie f\u00fcr PV DC-SPDs vom Typ 2 oder T1+T2 gem\u00e4\u00df IEC 61643-31 hinzu.<\/p>\r\n\r\n<h2 data-start=\"3151\" data-end=\"3197\">5. Typ 1 vs. Typ 2 vs. Typ 3 SPD-Ger\u00e4te<\/h2>\r\n<p data-start=\"3199\" data-end=\"3436\">Wenn Sie tiefer eintauchen m\u00f6chten, schauen Sie sich hier unseren speziellen Blog zu diesem Thema an:<br data-start=\"3270\" data-end=\"3273\" \/><a class=\"\" href=\"https:\/\/www.britecelectric.com\/de\/blog\/difference-between-type-1-type-2-and-type-3-surge-protective-devices\/\" target=\"_blank\" rel=\"noopener\" data-start=\"3276\" data-end=\"3434\"><em><strong>Unterschied zwischen SPDs vom Typ 1, Typ 2 und Typ 3<\/strong><\/em><\/a><\/p>\r\n<p data-start=\"3438\" data-end=\"3504\">Hier ist ein kurzer Vergleich, der Ihnen bei der Auswahl des richtigen SPD-Typs hilft:<\/p>\r\n\r\n<table>\r\n<thead>\r\n<tr>\r\n<th>Attribut<\/th>\r\n<th><strong>Typ 1 SPD<\/strong><\/th>\r\n<th><strong>Typ 2 SPD<\/strong><\/th>\r\n<th><strong>Typ 3 SPD<\/strong><\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td><strong>Gepr\u00fcfter Standard<\/strong><\/td>\r\n<td>IEC 61643-11 Klasse I (10\/350 \u00b5s) + Dual-Rating UL Typ 1\/2<\/td>\r\n<td>IEC 61643-11 Klasse II (8\/20 \u00b5s) + UL Typ 2<\/td>\r\n<td>IEC 61643-11 Klasse III (Kombinationswelle) + UL Typ 3<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Typischer Standort<\/strong><\/td>\r\n<td>Serviceeingang \/ Hauptschalttafel<\/td>\r\n<td>Innerhalb von Verteilertafeln\/Unterschr\u00e4nken<\/td>\r\n<td>Innerhalb von 1 m von kritischen Lasten (Computer, Fahrer, medizinische Ausr\u00fcstung)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Prim\u00e4re Funktion<\/strong><\/td>\r\n<td>Umgang mit direktem Blitzstrom; Geb\u00e4udeeingang sch\u00fctzen<\/td>\r\n<td>Bew\u00e4ltigen Sie modulare \u00dcberspannungen durch Schaltvorg\u00e4nge, St\u00f6rlichtb\u00f6gen usw.<\/td>\r\n<td>Unterdr\u00fccken Sie Restenergie f\u00fcr empfindliche Elektronik.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Parameterfokus<\/strong><\/td>\r\n<td>Hohe Impedanz; Uc \u2265 Systemspannung; Koordination hoch<\/td>\r\n<td>Bei Imax Up-Kaskadierung mit Upstream-\/Downstream-SPDs<\/td>\r\n<td>Ultra-Low-Up; Pr\u00e4zises Spannen zum Schutz empfindlicher Lasten<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Installationshinweis<\/strong><\/td>\r\n<td>Ben\u00f6tigt gro\u00dfe Verkabelung (\u226516 mm\u00b2); kann ohne vorgeschaltetes OCPD installiert werden; ist mit Typ 2 abzustimmen<\/td>\r\n<td>Erfordert vorgeschalteten \u00dcberstromschutz; Verkabelung \u22656 mm\u00b2<\/td>\r\n<td>Sehr nah an der Ladung; Erg\u00e4nzung zum Upstream-Typ 2<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Anwendungsf\u00e4lle<\/strong><\/td>\r\n<td>Geb\u00e4ude mit LPS, hohen Bauwerken und Zonen mit hohem Blitzeinschlag<\/td>\r\n<td>Die meisten Wohnh\u00e4user, gewerblichen Einrichtungen und industriellen Unterschalttafeln<\/td>\r\n<td>PC-Cluster, SPS-Racks, LED-\/Medizinsysteme<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<h4 data-start=\"1155\" data-end=\"1168\">\u00dcberblick<\/h4>\r\n<ul data-start=\"1183\" data-end=\"1421\">\r\n \t<li data-start=\"1183\" data-end=\"1258\">\r\n<p data-start=\"1185\" data-end=\"1258\"><strong data-start=\"1185\" data-end=\"1200\">SPDs vom Typ 1<\/strong> Bew\u00e4ltigen Sie energiereiche, direkte Blitzeinschl\u00e4ge (10\/350 \u00b5s).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1259\" data-end=\"1334\">\r\n<p data-start=\"1261\" data-end=\"1334\"><strong data-start=\"1261\" data-end=\"1276\">SPDs vom Typ 2<\/strong> Reduzieren Sie Schaltst\u00f6\u00dfe und indirekte St\u00f6\u00dfe (8\/20 \u00b5s).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1335\" data-end=\"1421\">\r\n<p data-start=\"1337\" data-end=\"1421\"><strong data-start=\"1337\" data-end=\"1352\">SPDs vom Typ 3<\/strong> Sch\u00fctzen Sie empfindliche Ger\u00e4te auf der letzten Meile (Kombinationswellenform).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"185\" data-end=\"253\">6. So installieren und koordinieren Sie \u00dcberspannungsschutzger\u00e4te (SPD)<\/h2>\r\n<p data-start=\"255\" data-end=\"619\">Die richtige Installation ist ebenso wichtig wie die Auswahl der richtigen Arten von \u00dcberspannungsschutzger\u00e4ten (SPD). Eine unsachgem\u00e4\u00dfe Verkabelung oder schlechte Koordination kann die Schutzniveaus beeintr\u00e4chtigen, selbst wenn das SPD selbst den IEC- oder UL-Standards entspricht. Basierend auf IEC 61643-11, IEC 61643-31, UL 1449 und den technischen Richtlinien unseres Unternehmens sind hier die wichtigsten Best Practices:<\/p>\r\n<p data-start=\"255\" data-end=\"619\"><a href=\"https:\/\/www.britecelectric.com\/de\/attachment\/spds-install\/\" rel=\"attachment wp-att-2167\"><img class=\"alignnone size-large wp-image-2167\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/SPDs-install-1024x726.jpg\" alt=\"\" width=\"1024\" height=\"726\" \/><\/a><\/p>\r\n\r\n<h3 data-start=\"621\" data-end=\"654\">1. Regel der k\u00fcrzesten Verbindung<\/h3>\r\n<ul data-start=\"655\" data-end=\"917\">\r\n \t<li data-start=\"655\" data-end=\"789\">\r\n<p data-start=\"657\" data-end=\"789\">Halten Sie alle SPD-Anschlussleitungen so kurz und gerade wie m\u00f6glich, idealerweise \u2264 0,5 m (wie in unserem technischen Handbuch empfohlen).<\/p>\r\n<\/li>\r\n \t<li data-start=\"790\" data-end=\"917\">\r\n<p data-start=\"792\" data-end=\"917\">Lange Leitungen f\u00fchren zu einem induktiven Spannungsanstieg, der die vom gesch\u00fctzten Ger\u00e4t wahrgenommene Restspannung (Up) erh\u00f6ht.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"919\" data-end=\"950\">2. Korrekte Leitergr\u00f6\u00dfe<\/h3>\r\n<ul data-start=\"951\" data-end=\"1317\">\r\n \t<li data-start=\"951\" data-end=\"1242\">\r\n<p data-start=\"953\" data-end=\"1002\">Verwenden Sie entsprechend dem SPD-Typ dimensionierte Leiter:<\/p>\r\n\r\n<ul data-start=\"1005\" data-end=\"1242\">\r\n \t<li data-start=\"1005\" data-end=\"1089\">\r\n<p data-start=\"1007\" data-end=\"1089\"><strong data-start=\"1007\" data-end=\"1022\">Typ 1 SPD:<\/strong> mindestens 16 mm\u00b2 Kupfer (energiereicher Blitzstrom, Iimp).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1092\" data-end=\"1137\">\r\n<p data-start=\"1094\" data-end=\"1137\"><strong data-start=\"1094\" data-end=\"1109\">Typ 2 SPD:<\/strong> mindestens 6 mm\u00b2 Kupfer.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1140\" data-end=\"1242\">\r\n<p data-start=\"1142\" data-end=\"1242\"><strong data-start=\"1142\" data-end=\"1157\">Typ 3 SPD:<\/strong> Beachten Sie die Angaben des Herstellers, typischerweise kleinere Querschnitte aufgrund geringerer Str\u00f6me.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1243\" data-end=\"1317\">\r\n<p data-start=\"1245\" data-end=\"1317\">Verwenden Sie immer Kupferleiter mit niedriger Impedanz und vermeiden Sie scharfe Biegungen.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1319\" data-end=\"1349\">3. Potenzialausgleich<\/h3>\r\n<ul data-start=\"1350\" data-end=\"1571\">\r\n \t<li data-start=\"1350\" data-end=\"1447\">\r\n<p data-start=\"1352\" data-end=\"1447\">Alle SPDs m\u00fcssen an die gleiche Haupterdungsschiene oder das gleiche Potenzialausgleichssystem angeschlossen werden.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1448\" data-end=\"1571\">\r\n<p data-start=\"1450\" data-end=\"1571\">Durch die Erdung wird sichergestellt, dass \u00dcberspannungsenergie sicher zur Erde abgeleitet wird, wodurch gef\u00e4hrliche Potenzialunterschiede zwischen Stromkreisen vermieden werden.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1573\" data-end=\"1598\">4. SPD-Koordination<\/h3>\r\n<ul data-start=\"1599\" data-end=\"2069\">\r\n \t<li data-start=\"1599\" data-end=\"1738\">\r\n<p data-start=\"1601\" data-end=\"1738\">Hierarchie des Spannungsschutzpegels (Up): Upstream-SPDs (Typ 1) sollten immer einen h\u00f6heren Up haben als Downstream-SPDs (Typ 2\/3).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1739\" data-end=\"1907\">\r\n<p data-start=\"1741\" data-end=\"1907\">Abstandsregel: Wenn das Kabel zwischen SPDs und gesch\u00fctzten Lasten l\u00e4nger als 10 m ist, installieren Sie f\u00fcr einen besseren Schutz ein zus\u00e4tzliches nachgeschaltetes SPD (z. B. Typ 3).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1908\" data-end=\"2069\">\r\n<p data-start=\"1910\" data-end=\"2069\">Parallele Koordination: Stellen Sie bei mehrstufigem Schutz (Typ 1 + Typ 2 + Typ 3) eine ordnungsgem\u00e4\u00dfe Energieverteilung sicher, damit kein einzelnes Ger\u00e4t \u00fcberlastet wird.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"2071\" data-end=\"2105\">5. Backup-Schutz (OCPD)<\/h3>\r\n<ul data-start=\"2106\" data-end=\"2388\">\r\n \t<li data-start=\"2106\" data-end=\"2187\">\r\n<p data-start=\"2108\" data-end=\"2187\">Verwenden Sie immer spezielle Sicherungen oder Schutzschalter, um das SPD selbst zu sch\u00fctzen.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2188\" data-end=\"2271\">\r\n<p data-start=\"2190\" data-end=\"2271\">In unserem Handbuch sind die Sicherungswerte der Vorsicherung je nach SPD-Modell und Imax\/Iimp angegeben.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2272\" data-end=\"2388\">\r\n<p data-start=\"2274\" data-end=\"2388\">UL 1449 erfordert au\u00dferdem einen geeigneten \u00dcberstromschutz, um eine \u00dcberhitzung oder einen Ausfall des SPDs bei extremen Ereignissen zu verhindern.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"2395\" data-end=\"2660\"><strong data-start=\"2397\" data-end=\"2409\">Profi-Tipp:<\/strong> \u00dcberpr\u00fcfen Sie stets die Einhaltung <strong data-start=\"2440\" data-end=\"2521\">IEC 61643-11 (AC-SPDs), IEC 61643-31 (PV\/DC-SPDs), <\/strong>oder UL 1449 (Nordamerika), je nach Region. Durch die richtige Installation und Koordination wird die Lebensdauer des SPD maximiert und die Sicherheit des gesamten elektrischen Systems gew\u00e4hrleistet.<\/p>\r\n\r\n<h2 data-start=\"6325\" data-end=\"6343\">7. Fazit<\/h2>\r\n<p data-start=\"6344\" data-end=\"6467\">Die Arten von \u00dcberspannungsschutzger\u00e4ten sind nicht austauschbar \u2013 jedes spielt eine einzigartige Rolle beim Schutz elektrischer Systeme.<\/p>\r\n\r\n<ul data-start=\"6468\" data-end=\"6720\">\r\n \t<li data-start=\"6468\" data-end=\"6524\">\r\n<p data-start=\"6470\" data-end=\"6524\"><strong data-start=\"6470\" data-end=\"6480\">Typ 1<\/strong> sch\u00fctzt vor direkten Blitzeinschl\u00e4gen.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6525\" data-end=\"6581\">\r\n<p data-start=\"6527\" data-end=\"6581\"><strong data-start=\"6527\" data-end=\"6537\">Typ 2<\/strong> ist das Arbeitstier f\u00fcr Verteiler.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6582\" data-end=\"6638\">\r\n<p data-start=\"6584\" data-end=\"6638\"><strong data-start=\"6584\" data-end=\"6594\">Typ 3<\/strong> sch\u00fctzt Ihre empfindlichste Elektronik.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6639\" data-end=\"6720\">\r\n<p data-start=\"6641\" data-end=\"6720\"><strong data-start=\"6641\" data-end=\"6672\">Kombinationen und PV\/DC-SPDs<\/strong> decken spezialisierte und erneuerbare Anwendungen ab.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"6722\" data-end=\"6892\">Durch das Verst\u00e4ndnis der SPD-Typen, ihrer Standards und Installationsregeln k\u00f6nnen Sie einen mehrschichtigen Schutz entwerfen, der Sicherheit gew\u00e4hrleistet, Ausfallzeiten minimiert und Investitionen sch\u00fctzt.<\/p>","protected":false},"featured_media":2160,"parent":0,"menu_order":125,"template":"","meta":{"_acf_changed":false},"blog_category":[9],"class_list":["post-2163","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-industry-news"],"acf":{"des":"Discover the different Types of Surge Protection Devices (SPDs) \u2014 Type 1, Type 2, Type 3, combo units, and PV\/DC solutions. Backed by IEC and UL standards, this guide explains how each SPD works, where to install it, and how to coordinate them for reliable protection of homes, businesses, and solar systems.","txt":"<h2 data-start=\"384\" data-end=\"404\">1. Introduction<\/h2>\r\n<p data-start=\"405\" data-end=\"685\">Power surges are silent killers in modern electrical systems. From residential electronics to industrial automation and solar plants, even a single transient overvoltage can cause downtime, costly repairs, or equipment failure. The solution? <strong data-start=\"647\" data-end=\"683\"><span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.britecelectric.com\/product-category\/ac-power-surge-protection\/\" target=\"_blank\" rel=\"noopener\">Surge Protection Devices (SPDs)<\/a><\/span>.<\/strong><\/p>\r\n<p data-start=\"687\" data-end=\"952\">In this guide, we\u2019ll break down the different Types of Surge Protection Devices, explain how they work, and compare their applications. By the end, you\u2019ll know exactly which SPD types fit your system \u2014 whether it\u2019s a home, data center, or PV installation.<\/p>\r\n\r\n<h2 data-start=\"959\" data-end=\"1001\">2. What Are Surge Protection Devices?<\/h2>\r\n<p data-start=\"1002\" data-end=\"1283\">A <a href=\"https:\/\/www.britecelectric.com\/product-category\/ac-power-surge-protection\/\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\"><strong data-start=\"1004\" data-end=\"1037\">Surge Protection Device (SPD)<\/strong> <\/span><\/a>is a safety component installed in an electrical system to limit transient overvoltages caused by lightning strikes, switching events, or utility disturbances. It works by diverting surge energy safely to earth, protecting connected equipment.<\/p>\r\n<p data-start=\"1285\" data-end=\"1440\">Think of an SPD as a pressure-release valve: it doesn\u2019t stop the surge from happening, but it channels the excess energy away from sensitive electronics.<\/p>\r\n<p data-start=\"1285\" data-end=\"1440\"><a href=\"https:\/\/www.britecelectric.com\/product-category\/ac-power-surge-protection\/\" rel=\"attachment wp-att-2160\"><img class=\"alignnone wp-image-2160 \" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/BR-20-4P-1Type-2-Surge-Protection-Device.jpg-1024x1024.webp\" alt=\"Types of Surge Protection Devices\" width=\"705\" height=\"705\" \/><\/a><\/p>\r\n\r\n<h2 data-start=\"1447\" data-end=\"1486\">3. How Does Surge Protection Work?<\/h2>\r\n<p data-start=\"1487\" data-end=\"1734\">SPDs rely on components such as Metal Oxide Varistors (MOVs), Gas Discharge Tubes (GDTs), and spark gaps. When voltage exceeds a safe threshold (Uc), the SPD switches into conduction mode, clamping the surge to a lower residual voltage (Up).<\/p>\r\n<p data-start=\"1736\" data-end=\"1767\">Key parameters to understand:<\/p>\r\n\r\n<ul data-start=\"1768\" data-end=\"2141\">\r\n \t<li data-start=\"1768\" data-end=\"1853\">\r\n<p data-start=\"1770\" data-end=\"1853\"><strong data-start=\"1770\" data-end=\"1816\">Uc (Maximum Continuous Operating Voltage):<\/strong> the normal voltage the SPD can handle.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1854\" data-end=\"1945\">\r\n<p data-start=\"1856\" data-end=\"1945\"><strong data-start=\"1856\" data-end=\"1890\">Up (Voltage Protection Level):<\/strong> clamping voltage that downstream devices will \u201csee.\u201d<\/p>\r\n<\/li>\r\n \t<li data-start=\"1946\" data-end=\"2048\">\r\n<p data-start=\"1948\" data-end=\"2048\"><strong data-start=\"1948\" data-end=\"2000\">In \/ Imax (Nominal &amp; Maximum Discharge Current):<\/strong> how much surge current the device can absorb.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2049\" data-end=\"2141\">\r\n<p data-start=\"2051\" data-end=\"2141\"><strong data-start=\"2051\" data-end=\"2078\">Iimp (Impulse Current):<\/strong> specific to Type 1, representing lightning strike waveforms.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<a href=\"https:\/\/www.britecelectric.com\/attachment\/spd-install\/\" rel=\"attachment wp-att-2159\"><img class=\"alignnone size-full wp-image-2159\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/SPD-install.jpg\" alt=\"\" width=\"745\" height=\"609\" \/><\/a>\r\n<h2 data-start=\"486\" data-end=\"527\">4. Types of Surge Protection Devices<\/h2>\r\n<p data-start=\"529\" data-end=\"821\">Understanding SPD types is the key to designing layered surge protection. International standards such as <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/65314\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"639\" data-end=\"660\">IEC 61643-11 (AC)<\/strong><\/a>, <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/26931\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"662\" data-end=\"686\">IEC 61643-31 (DC\/PV)<\/strong><\/a>, and <a href=\"https:\/\/www.nemasurge.org\/ul-1449-transient-voltage-surge-suppressors\/\" target=\"_blank\" rel=\"nofollow noopener\"><strong data-start=\"692\" data-end=\"719\">UL 1449 (North America)<\/strong> <\/a>define different classes based on test waveforms, energy capability, and installation location.<\/p>\r\n<p data-start=\"823\" data-end=\"975\">Below, we break down the different types of surge protection devices (SPDs) you\u2019ll encounter, with their technical roles and application guidance.<\/p>\r\n\r\n<h3 data-start=\"982\" data-end=\"1038\">4.1 Type 1 SPDs (IEC 61643-11, Class I, 10\/350 \u00b5s)<\/h3>\r\n<ul data-start=\"1039\" data-end=\"1975\">\r\n \t<li data-start=\"1039\" data-end=\"1201\">\r\n<p data-start=\"1041\" data-end=\"1201\"><strong data-start=\"1041\" data-end=\"1056\">Definition:<\/strong> Designed to discharge partial lightning current. Tested with the 10\/350 \u00b5s impulse waveform (Iimp) representing a direct lightning strike.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1202\" data-end=\"1383\">\r\n<p data-start=\"1204\" data-end=\"1383\"><strong data-start=\"1204\" data-end=\"1227\">Installation Point:<\/strong> Service entrance, typically upstream of the main distribution board. Often used in buildings equipped with an external Lightning Protection System (LPS).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1384\" data-end=\"1658\">\r\n<p data-start=\"1386\" data-end=\"1407\"><strong data-start=\"1386\" data-end=\"1405\">Key Parameters:<\/strong><\/p>\r\n\r\n<ul data-start=\"1410\" data-end=\"1658\">\r\n \t<li data-start=\"1410\" data-end=\"1475\">\r\n<p data-start=\"1412\" data-end=\"1475\">Iimp (Impulse Current): rated lightning current capacity.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1478\" data-end=\"1571\">\r\n<p data-start=\"1480\" data-end=\"1571\">Uc (Maximum Continuous Operating Voltage): ensures no damage during normal operation.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1574\" data-end=\"1658\">\r\n<p data-start=\"1576\" data-end=\"1658\">Up (Voltage Protection Level): residual voltage seen by downstream circuits.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1659\" data-end=\"1731\">\r\n<p data-start=\"1661\" data-end=\"1731\"><strong data-start=\"1661\" data-end=\"1681\">Technology Used:<\/strong> Spark gaps, heavy-duty MOVs, or hybrid designs.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1732\" data-end=\"1862\">\r\n<p data-start=\"1734\" data-end=\"1750\"><strong data-start=\"1734\" data-end=\"1748\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"1753\" data-end=\"1862\">\r\n \t<li data-start=\"1753\" data-end=\"1806\">\r\n<p data-start=\"1755\" data-end=\"1806\">Industrial facilities, telecom towers, hospitals.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1809\" data-end=\"1862\">\r\n<p data-start=\"1811\" data-end=\"1862\">Tall buildings in high lightning density regions.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1863\" data-end=\"1975\">\r\n<p data-start=\"1865\" data-end=\"1975\"><strong data-start=\"1865\" data-end=\"1877\">Example:<\/strong> A factory with rooftop lightning rods will require Type 1 SPDs at the main incoming supply.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1982\" data-end=\"2037\">4.2 Type 2 SPDs (IEC 61643-11, Class II, 8\/20 \u00b5s)<\/h3>\r\n<ul data-start=\"2038\" data-end=\"2824\">\r\n \t<li data-start=\"2038\" data-end=\"2167\">\r\n<p data-start=\"2040\" data-end=\"2167\"><strong data-start=\"2040\" data-end=\"2055\">Definition:<\/strong> Handles switching surges and indirect lightning effects. Tested with 8\/20 \u00b5s current waveform (In, Imax).<\/p>\r\n<\/li>\r\n \t<li data-start=\"2168\" data-end=\"2248\">\r\n<p data-start=\"2170\" data-end=\"2248\"><strong data-start=\"2170\" data-end=\"2193\">Installation Point:<\/strong> Main or sub-distribution boards inside the facility.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2249\" data-end=\"2496\">\r\n<p data-start=\"2251\" data-end=\"2272\"><strong data-start=\"2251\" data-end=\"2270\">Key Parameters:<\/strong><\/p>\r\n\r\n<ul data-start=\"2275\" data-end=\"2496\">\r\n \t<li data-start=\"2275\" data-end=\"2347\">\r\n<p data-start=\"2277\" data-end=\"2347\">In (Nominal Discharge Current): endurance under multiple surges.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2350\" data-end=\"2417\">\r\n<p data-start=\"2352\" data-end=\"2417\">Imax (Maximum Discharge Current): maximum surge capability.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2420\" data-end=\"2496\">\r\n<p data-start=\"2422\" data-end=\"2496\">Up: must coordinate with both upstream Type 1 and downstream Type 3.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2497\" data-end=\"2578\">\r\n<p data-start=\"2499\" data-end=\"2578\"><strong data-start=\"2499\" data-end=\"2519\">Technology Used:<\/strong> MOV-based modules, often pluggable for easy replacement.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2579\" data-end=\"2716\">\r\n<p data-start=\"2581\" data-end=\"2597\"><strong data-start=\"2581\" data-end=\"2595\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"2600\" data-end=\"2716\">\r\n \t<li data-start=\"2600\" data-end=\"2655\">\r\n<p data-start=\"2602\" data-end=\"2655\">Residential homes, office buildings, retail stores.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2658\" data-end=\"2716\">\r\n<p data-start=\"2660\" data-end=\"2716\">Standard protection in areas with moderate surge risk.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2717\" data-end=\"2824\">\r\n<p data-start=\"2719\" data-end=\"2824\"><strong data-start=\"2719\" data-end=\"2731\">Example:<\/strong> A small office without external LPS would typically use Type 2 SPDs in the main board.<\/p>\r\n<\/li>\r\n<\/ul>\r\nWant a detailed breakdown? Read our full guide: <span style=\"text-decoration: underline;\"><em><strong data-start=\"1021\" data-end=\"1147\"><a class=\"decorated-link\" href=\"https:\/\/www.britecelectric.com\/blog\/what-is-a-type-2-surge-protection-device\/\" target=\"_blank\" rel=\"noopener\" data-start=\"1023\" data-end=\"1145\">What Is a Type 2 Surge Protection Device?<\/a><\/strong><\/em><\/span>\r\n<h3 data-start=\"2831\" data-end=\"2890\">4.3 Type 3 SPDs (IEC 61643-11, Class III, combo wave)<\/h3>\r\n<ul data-start=\"2891\" data-end=\"3555\">\r\n \t<li data-start=\"2891\" data-end=\"3022\">\r\n<p data-start=\"2893\" data-end=\"3022\"><strong data-start=\"2893\" data-end=\"2908\">Definition:<\/strong> Fine protection for terminal equipment. Tested with combination wave (1.2\/50 \u00b5s voltage + 8\/20 \u00b5s current).<\/p>\r\n<\/li>\r\n \t<li data-start=\"3023\" data-end=\"3126\">\r\n<p data-start=\"3025\" data-end=\"3126\"><strong data-start=\"3025\" data-end=\"3048\">Installation Point:<\/strong> As close as possible to the protected device (socket outlet, device input).<\/p>\r\n<\/li>\r\n \t<li data-start=\"3127\" data-end=\"3273\">\r\n<p data-start=\"3129\" data-end=\"3150\"><strong data-start=\"3129\" data-end=\"3148\">Key Parameters:<\/strong><\/p>\r\n\r\n<ul data-start=\"3153\" data-end=\"3273\">\r\n \t<li data-start=\"3153\" data-end=\"3216\">\r\n<p data-start=\"3155\" data-end=\"3216\">Up: very low clamping level to protect sensitive loads.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3219\" data-end=\"3273\">\r\n<p data-start=\"3221\" data-end=\"3273\">Must be used in coordination with upstream Type 2.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"3274\" data-end=\"3348\">\r\n<p data-start=\"3276\" data-end=\"3348\"><strong data-start=\"3276\" data-end=\"3296\">Technology Used:<\/strong> MOVs combined with filters for extra attenuation.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3349\" data-end=\"3435\">\r\n<p data-start=\"3351\" data-end=\"3367\"><strong data-start=\"3351\" data-end=\"3365\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"3370\" data-end=\"3435\">\r\n \t<li data-start=\"3370\" data-end=\"3435\">\r\n<p data-start=\"3372\" data-end=\"3435\">Computers, LED drivers, medical electronics, and control systems.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"3436\" data-end=\"3555\">\r\n<p data-start=\"3438\" data-end=\"3555\"><strong data-start=\"3438\" data-end=\"3450\">Example:<\/strong> A hospital MRI machine requires Type 3 SPD near the device, working together with upstream Type 2.<\/p>\r\n<\/li>\r\n<\/ul>\r\nLearn more in our dedicated article: <span style=\"text-decoration: underline;\"><em><strong data-start=\"1474\" data-end=\"1584\"><a class=\"decorated-link\" href=\"https:\/\/www.britecelectric.com\/blog\/what-is-a-type-3-surge-protector\/\" target=\"_blank\" rel=\"noopener\" data-start=\"1476\" data-end=\"1582\">What Is a Type 3 Surge Protector?<\/a><\/strong><\/em><\/span>\r\n<h3 data-start=\"3562\" data-end=\"3594\">4.4 T1+T2 Combination SPDs<\/h3>\r\n<ul data-start=\"3595\" data-end=\"4178\">\r\n \t<li data-start=\"3595\" data-end=\"3710\">\r\n<p data-start=\"3597\" data-end=\"3710\"><strong data-start=\"3597\" data-end=\"3612\">Definition:<\/strong> A single SPD unit tested for both Class I (10\/350 \u00b5s) and Class II (8\/20 \u00b5s) waveforms.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3711\" data-end=\"3804\">\r\n<p data-start=\"3713\" data-end=\"3804\"><strong data-start=\"3713\" data-end=\"3725\">Benefit:<\/strong> Protects against direct lightning as well as switching surges in one device.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3805\" data-end=\"3895\">\r\n<p data-start=\"3807\" data-end=\"3895\"><strong data-start=\"3807\" data-end=\"3830\">Installation Point:<\/strong> Service entrance when space or budget limits multiple devices.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3896\" data-end=\"4076\">\r\n<p data-start=\"3898\" data-end=\"3914\"><strong data-start=\"3898\" data-end=\"3912\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"3917\" data-end=\"4076\">\r\n \t<li data-start=\"3917\" data-end=\"3996\">\r\n<p data-start=\"3919\" data-end=\"3996\">Medium-sized commercial or residential buildings need compact solutions.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3999\" data-end=\"4076\">\r\n<p data-start=\"4001\" data-end=\"4076\">Sites where coordination between separate Type 1 and Type 2 is difficult.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4077\" data-end=\"4178\">\r\n<p data-start=\"4079\" data-end=\"4178\"><strong data-start=\"4079\" data-end=\"4091\">Example:<\/strong> A shopping mall's main switchboard may install a T1+T2 SPD to simplify protection.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4185\" data-end=\"4217\">4.5 T2+T3 Combination SPDs<\/h3>\r\n<ul data-start=\"4218\" data-end=\"4676\">\r\n \t<li data-start=\"4218\" data-end=\"4299\">\r\n<p data-start=\"4220\" data-end=\"4299\"><strong data-start=\"4220\" data-end=\"4235\">Definition:<\/strong> Hybrid devices are tested for Class II and Class III performance.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4300\" data-end=\"4374\">\r\n<p data-start=\"4302\" data-end=\"4374\"><strong data-start=\"4302\" data-end=\"4314\">Benefit:<\/strong> Provides both distribution-level and terminal protection.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4375\" data-end=\"4477\">\r\n<p data-start=\"4377\" data-end=\"4477\"><strong data-start=\"4377\" data-end=\"4400\">Installation Point:<\/strong> Sub-panels close to sensitive loads, especially if cable runs exceed 10 m.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4478\" data-end=\"4559\">\r\n<p data-start=\"4480\" data-end=\"4496\"><strong data-start=\"4480\" data-end=\"4494\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"4499\" data-end=\"4559\">\r\n \t<li data-start=\"4499\" data-end=\"4559\">\r\n<p data-start=\"4501\" data-end=\"4559\">Data centers, server rooms, industrial control cabinets.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4560\" data-end=\"4676\">\r\n<p data-start=\"4562\" data-end=\"4676\"><strong data-start=\"4562\" data-end=\"4574\">Example:<\/strong> A factory automation line with long cable runs to PLCs can use a T2+T3 SPD near the PLC panels.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4683\" data-end=\"4734\">4.6 Type 4 SPDs (UL 1449, North America only)<\/h3>\r\n<ul data-start=\"4735\" data-end=\"5324\">\r\n \t<li data-start=\"4735\" data-end=\"4856\">\r\n<p data-start=\"4737\" data-end=\"4856\"><strong data-start=\"4737\" data-end=\"4762\">Definition (UL 1449):<\/strong> Component assemblies not intended as stand-alone devices but integrated into OEM equipment.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4857\" data-end=\"5012\">\r\n<p data-start=\"4859\" data-end=\"4879\"><strong data-start=\"4859\" data-end=\"4877\">Subcategories:<\/strong><\/p>\r\n\r\n<ul data-start=\"4882\" data-end=\"5012\">\r\n \t<li data-start=\"4882\" data-end=\"4965\">\r\n<p data-start=\"4884\" data-end=\"4965\">Type 4 Component Assemblies (CA): pre-packaged SPD parts for manufacturers.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4968\" data-end=\"5012\">\r\n<p data-start=\"4970\" data-end=\"5012\">Type 5 Components: raw MOVs or GDTs.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5013\" data-end=\"5099\">\r\n<p data-start=\"5015\" data-end=\"5099\"><strong data-start=\"5015\" data-end=\"5038\">Installation Point:<\/strong> Inside appliances, power supplies, or custom-built panels.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5100\" data-end=\"5230\">\r\n<p data-start=\"5102\" data-end=\"5118\"><strong data-start=\"5102\" data-end=\"5116\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"5121\" data-end=\"5230\">\r\n \t<li data-start=\"5121\" data-end=\"5166\">\r\n<p data-start=\"5123\" data-end=\"5166\">OEMs designing surge-protected equipment.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5169\" data-end=\"5230\">\r\n<p data-start=\"5171\" data-end=\"5230\">Specialized industrial gear in the North American market.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5231\" data-end=\"5324\">\r\n<p data-start=\"5233\" data-end=\"5324\"><strong data-start=\"5233\" data-end=\"5245\">Example:<\/strong> A UPS manufacturer integrates Type 4 SPD assemblies inside its products.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5331\" data-end=\"5382\">4.7 PV\/DC SPDs (IEC 61643-31, up to 1500 VDC)<\/h3>\r\n<ul data-start=\"5383\" data-end=\"6082\">\r\n \t<li data-start=\"5383\" data-end=\"5474\">\r\n<p data-start=\"5385\" data-end=\"5474\"><strong data-start=\"5385\" data-end=\"5400\">Definition:<\/strong> Surge protection devices designed for photovoltaic and DC circuits.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5475\" data-end=\"5555\">\r\n<p data-start=\"5477\" data-end=\"5555\"><strong data-start=\"5477\" data-end=\"5496\">Test Standards:<\/strong> IEC 61643-31 specifies requirements for DC applications.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5556\" data-end=\"5647\">\r\n<p data-start=\"5558\" data-end=\"5647\"><strong data-start=\"5558\" data-end=\"5581\">Installation Point:<\/strong> PV array combiner boxes, inverters, and DC distribution boards.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5648\" data-end=\"5876\">\r\n<p data-start=\"5650\" data-end=\"5671\"><strong data-start=\"5650\" data-end=\"5669\">Key Parameters:<\/strong><\/p>\r\n\r\n<ul data-start=\"5674\" data-end=\"5876\">\r\n \t<li data-start=\"5674\" data-end=\"5740\">\r\n<p data-start=\"5676\" data-end=\"5740\">Ucpv: rated continuous PV voltage (600 V, 1000 V, 1500 V).<\/p>\r\n<\/li>\r\n \t<li data-start=\"5743\" data-end=\"5796\">\r\n<p data-start=\"5745\" data-end=\"5796\">In \/ Imax: surge current handling on the DC side.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5799\" data-end=\"5876\">\r\n<p data-start=\"5801\" data-end=\"5876\">Response time: must be fast enough for semiconductor-based inverters.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5877\" data-end=\"5976\">\r\n<p data-start=\"5879\" data-end=\"5895\"><strong data-start=\"5879\" data-end=\"5893\">Use Cases:<\/strong><\/p>\r\n\r\n<ul data-start=\"5898\" data-end=\"5976\">\r\n \t<li data-start=\"5898\" data-end=\"5976\">\r\n<p data-start=\"5900\" data-end=\"5976\">Utility-scale solar farms, rooftop PV systems, battery storage facilities.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5977\" data-end=\"6082\">\r\n<p data-start=\"5979\" data-end=\"6082\"><strong data-start=\"5979\" data-end=\"5991\">Example:<\/strong> A 1500 VDC solar farm will need <a href=\"https:\/\/www.britecelectric.com\/product_category\/pv-surge-protection-type-1-type-2\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"6024\" data-end=\"6041\">T1+T2 PV SPDs<\/strong><\/a> at combiner boxes and inverter inputs.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"6089\" data-end=\"6304\"><strong data-start=\"6091\" data-end=\"6115\">Pro Tip for readers:<\/strong> Always use a <em data-start=\"6129\" data-end=\"6153\">coordinated SPD system<\/em>. Type 1 at the entrance, Type 2 at sub-panels, and Type 3 close to critical loads. For PV, add Type 2 or T1+T2 DC SPDs as specified by IEC 61643-31.<\/p>\r\n\r\n<h2 data-start=\"3151\" data-end=\"3197\">5. Type 1 vs Type 2 vs Type 3 SPD Devices<\/h2>\r\n<p data-start=\"3199\" data-end=\"3436\">If you want a deeper dive, check our dedicated blog on this topic here:<br data-start=\"3270\" data-end=\"3273\" \/><a class=\"\" href=\"https:\/\/www.britecelectric.com\/blog\/difference-between-type-1-type-2-and-type-3-surge-protective-devices\/\" target=\"_blank\" rel=\"noopener\" data-start=\"3276\" data-end=\"3434\"><em><strong>Difference Between Type 1, Type 2, and Type 3 SPDs<\/strong><\/em><\/a><\/p>\r\n<p data-start=\"3438\" data-end=\"3504\">Here\u2019s a quick comparison to help you choose the right SPD type:<\/p>\r\n\r\n<table>\r\n<thead>\r\n<tr>\r\n<th>Attribute<\/th>\r\n<th><strong>Type 1 SPD<\/strong><\/th>\r\n<th><strong>Type 2 SPD<\/strong><\/th>\r\n<th><strong>Type 3 SPD<\/strong><\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td><strong>Tested Standard<\/strong><\/td>\r\n<td>IEC 61643-11 Class I (10\/350 \u00b5s) + dual-rated UL Type 1\/2<\/td>\r\n<td>IEC 61643-11 Class II (8\/20 \u00b5s) + UL Type 2<\/td>\r\n<td>IEC 61643-11 Class III (combination wave) + UL Type 3<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Typical Location<\/strong><\/td>\r\n<td>Service entrance \/ Main switchboard<\/td>\r\n<td>Inside distribution boards\/sub-panels<\/td>\r\n<td>Within 1 m of critical loads (computers, drivers, medical gear)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Primary Function<\/strong><\/td>\r\n<td>Handle direct lightning current; protect building entrance<\/td>\r\n<td>Handle modular surges from switching, fault arcs, etc.<\/td>\r\n<td>Suppress residual energy for sensitive electronics.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Parameter Focus<\/strong><\/td>\r\n<td>High impedance; Uc \u2265 system voltage; Up coordination<\/td>\r\n<td>In Imax, Up cascading with upstream\/downstream SPDs<\/td>\r\n<td>Ultra-low Up; precise clamping to protect sensitive loads<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Installation Note<\/strong><\/td>\r\n<td>Needs large wiring (\u226516 mm\u00b2); can be installed without upstream OCPD; must be coordinated with Type 2<\/td>\r\n<td>Requires upstream overcurrent protection; wiring \u22656 mm\u00b2<\/td>\r\n<td>Very close to load; supplement to upstream Type 2<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Use Cases<\/strong><\/td>\r\n<td>Buildings with LPS, tall structures, and high lightning zones<\/td>\r\n<td>Most homes, commercial facilities, and industrial sub-panels<\/td>\r\n<td>PC clusters, PLC racks, LED\/medical systems<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<h4 data-start=\"1155\" data-end=\"1168\">Overview<\/h4>\r\n<ul data-start=\"1183\" data-end=\"1421\">\r\n \t<li data-start=\"1183\" data-end=\"1258\">\r\n<p data-start=\"1185\" data-end=\"1258\"><strong data-start=\"1185\" data-end=\"1200\">Type 1 SPDs<\/strong> handle high-energy, direct lightning strokes (10\/350 \u00b5s).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1259\" data-end=\"1334\">\r\n<p data-start=\"1261\" data-end=\"1334\"><strong data-start=\"1261\" data-end=\"1276\">Type 2 SPDs<\/strong> mitigate switching surges and indirect strikes (8\/20 \u00b5s).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1335\" data-end=\"1421\">\r\n<p data-start=\"1337\" data-end=\"1421\"><strong data-start=\"1337\" data-end=\"1352\">Type 3 SPDs<\/strong> protect sensitive equipment at the last mile (combination waveform).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"185\" data-end=\"253\">6. How to Install and Coordinate Surge Protection Devices (SPD)<\/h2>\r\n<p data-start=\"255\" data-end=\"619\">Correct installation is just as critical as selecting the right Types of Surge Protection Devices (SPD). Improper wiring or poor coordination can compromise protection levels, even if the SPD itself meets IEC or UL standards. Based on IEC 61643-11, IEC 61643-31, UL 1449, and our company\u2019s engineering guidelines, here are the key best practices:<\/p>\r\n<p data-start=\"255\" data-end=\"619\"><a href=\"https:\/\/www.britecelectric.com\/attachment\/spds-install\/\" rel=\"attachment wp-att-2167\"><img class=\"alignnone size-large wp-image-2167\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/SPDs-install-1024x726.jpg\" alt=\"\" width=\"1024\" height=\"726\" \/><\/a><\/p>\r\n\r\n<h3 data-start=\"621\" data-end=\"654\">1. Shortest Connection Rule<\/h3>\r\n<ul data-start=\"655\" data-end=\"917\">\r\n \t<li data-start=\"655\" data-end=\"789\">\r\n<p data-start=\"657\" data-end=\"789\">Keep all SPD connecting leads as short and straight as possible, ideally \u2264 0.5 m (as recommended in our technical manual).<\/p>\r\n<\/li>\r\n \t<li data-start=\"790\" data-end=\"917\">\r\n<p data-start=\"792\" data-end=\"917\">Long leads introduce inductive voltage rise, which increases the residual voltage (Up) seen by the protected equipment.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"919\" data-end=\"950\">2. Correct Conductor Size<\/h3>\r\n<ul data-start=\"951\" data-end=\"1317\">\r\n \t<li data-start=\"951\" data-end=\"1242\">\r\n<p data-start=\"953\" data-end=\"1002\">Use conductors sized according to the SPD type:<\/p>\r\n\r\n<ul data-start=\"1005\" data-end=\"1242\">\r\n \t<li data-start=\"1005\" data-end=\"1089\">\r\n<p data-start=\"1007\" data-end=\"1089\"><strong data-start=\"1007\" data-end=\"1022\">Type 1 SPD:<\/strong> minimum 16 mm\u00b2 copper (high-energy lightning current, Iimp).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1092\" data-end=\"1137\">\r\n<p data-start=\"1094\" data-end=\"1137\"><strong data-start=\"1094\" data-end=\"1109\">Type 2 SPD:<\/strong> minimum 6 mm\u00b2 copper.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1140\" data-end=\"1242\">\r\n<p data-start=\"1142\" data-end=\"1242\"><strong data-start=\"1142\" data-end=\"1157\">Type 3 SPD:<\/strong> follow the manufacturer\u2019s data, typically smaller cross-sections due to lower current.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1243\" data-end=\"1317\">\r\n<p data-start=\"1245\" data-end=\"1317\">Always use copper conductors with low impedance and avoid sharp bends.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1319\" data-end=\"1349\">3. Equipotential Bonding<\/h3>\r\n<ul data-start=\"1350\" data-end=\"1571\">\r\n \t<li data-start=\"1350\" data-end=\"1447\">\r\n<p data-start=\"1352\" data-end=\"1447\">All SPDs must be connected to the same main earthing bar or equipotential bonding system.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1448\" data-end=\"1571\">\r\n<p data-start=\"1450\" data-end=\"1571\">Bonding ensures surge energy is safely discharged to ground, avoiding dangerous potential differences between circuits.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1573\" data-end=\"1598\">4. SPD Coordination<\/h3>\r\n<ul data-start=\"1599\" data-end=\"2069\">\r\n \t<li data-start=\"1599\" data-end=\"1738\">\r\n<p data-start=\"1601\" data-end=\"1738\">Voltage Protection Level (Up) Hierarchy: Upstream SPDs (Type 1) should always have a higher Up than downstream SPDs (Type 2\/3).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1739\" data-end=\"1907\">\r\n<p data-start=\"1741\" data-end=\"1907\">Distance Rule: If the cable between SPDs and protected loads is longer than 10 m, install an additional downstream SPD (e.g., Type 3) for better protection.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1908\" data-end=\"2069\">\r\n<p data-start=\"1910\" data-end=\"2069\">Parallel Coordination: For multi-stage protection (Type 1 + Type 2 + Type 3), ensure proper energy distribution so that no single device is overstressed.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"2071\" data-end=\"2105\">5. Back-Up Protection (OCPD)<\/h3>\r\n<ul data-start=\"2106\" data-end=\"2388\">\r\n \t<li data-start=\"2106\" data-end=\"2187\">\r\n<p data-start=\"2108\" data-end=\"2187\">Always use dedicated fuses or circuit breakers to protect the SPD itself.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2188\" data-end=\"2271\">\r\n<p data-start=\"2190\" data-end=\"2271\">Our manual specifies back-up fuse ratings depending on SPD model and Imax\/Iimp.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2272\" data-end=\"2388\">\r\n<p data-start=\"2274\" data-end=\"2388\">UL 1449 also requires proper overcurrent protection to prevent SPD overheating or failure during extreme events.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"2395\" data-end=\"2660\"><strong data-start=\"2397\" data-end=\"2409\">Pro Tip:<\/strong> Always verify compliance with <strong data-start=\"2440\" data-end=\"2521\">IEC 61643-11 (AC SPDs), IEC 61643-31 (PV\/DC SPDs), <\/strong>or UL 1449 (North America) depending on your region. Correct installation and coordination maximize SPD lifetime and ensure safety of the entire electrical system.<\/p>\r\n\r\n<h2 data-start=\"6325\" data-end=\"6343\">7. Conclusion<\/h2>\r\n<p data-start=\"6344\" data-end=\"6467\">Types of Surge Protection Devices are not interchangeable \u2014 each plays a unique role in defending electrical systems.<\/p>\r\n\r\n<ul data-start=\"6468\" data-end=\"6720\">\r\n \t<li data-start=\"6468\" data-end=\"6524\">\r\n<p data-start=\"6470\" data-end=\"6524\"><strong data-start=\"6470\" data-end=\"6480\">Type 1<\/strong> shields against direct lightning strikes.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6525\" data-end=\"6581\">\r\n<p data-start=\"6527\" data-end=\"6581\"><strong data-start=\"6527\" data-end=\"6537\">Type 2<\/strong> is the workhorse for distribution boards.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6582\" data-end=\"6638\">\r\n<p data-start=\"6584\" data-end=\"6638\"><strong data-start=\"6584\" data-end=\"6594\">Type 3<\/strong> protects your most sensitive electronics.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6639\" data-end=\"6720\">\r\n<p data-start=\"6641\" data-end=\"6720\"><strong data-start=\"6641\" data-end=\"6672\">Combinations and PV\/DC SPDs<\/strong> cover specialized and renewable applications.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"6722\" data-end=\"6892\">By understanding SPD types, their standards, and installation rules, you can design a layered defense that ensures safety, minimizes downtime, and protects investments.<\/p>"},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/de\/wp-json\/wp\/v2\/blog\/2163","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/de\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/de\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/de\/wp-json\/wp\/v2\/media\/2160"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/de\/wp-json\/wp\/v2\/media?parent=2163"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/de\/wp-json\/wp\/v2\/blog_category?post=2163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}