{"id":2241,"date":"2025-11-19T14:11:15","date_gmt":"2025-11-19T06:11:15","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&p=2241"},"modified":"2025-11-19T15:12:37","modified_gmt":"2025-11-19T07:12:37","slug":"type-1-surge-protection-device-vs-type-2-spd","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/de\/blog\/type-1-surge-protection-device-vs-type-2-spd\/","title":{"rendered":"\u00dcberspannungsschutzger\u00e4t vom Typ 1 im Vergleich zu SPD vom Typ 2"},"content":{"rendered":"In modern electrical systems, surge protectors (SPDs) are critical devices for protecting against damage from lightning strikes and switch surges. However, many people are confused by the different types, such as Type 1 and Type 2\u00a0surge protection device.\r\n\r\nWhat Is the difference between Type 1 and Type 2 SPD?This article will provide an in-depth comparison of \u00dcberspannungsschutzger\u00e4t Typ 1<\/strong><\/a> und Typ-2-SPDs, damit Sie deren Unterschiede und Anwendungsszenarien verstehen und die richtige Wahl treffen k\u00f6nnen.\r\n\r\n \r\n

2. \u00dcberspannungsschutzger\u00e4t Typ 1 im Vergleich zu SPD Typ 2<\/h2>\r\nSurge protectors (SPDs) are the \"safety valves\" of electrical systems. Type 1 and Type 2 are the two most commonly used SPDs. They each have their own functions and work together to build a complete protection system.\r\n

2.1 Hauptfunktion von SPD Typ 1 und Typ 2<\/h2>\r\n\"BR-25M<\/a>\r\n
Typ 1 SPD (Lightning Current Discharge Device):<\/strong><\/div>\r\n
Hauptfunktion: Bietet Schutz vor direkten Blitzeinschl\u00e4gen oder Teilblitzstr\u00f6men. Es wird normalerweise am Haupteingangspunkt eines Geb\u00e4udes platziert und bietet einen (grundlegenden) Schutz der ersten Ebene.<\/div>\r\n
Kernaufgabe: Bew\u00e4ltigt und leitet gro\u00dfe Blitzstr\u00f6me um, um Sch\u00e4den an nachgeschalteten Ger\u00e4ten und Leitungen zu verhindern.<\/div>\r\n
<\/div>\r\n
Typ 2 SPD (Druckkontrollger\u00e4t):<\/strong><\/div>\r\n
Hauptfunktion: Zum Schutz vor \u00dcberspannungen durch Schalterbet\u00e4tigung und Rest\u00fcberspannungen durch induzierte Blitzeinschl\u00e4ge. Es wird typischerweise in Verteilerk\u00e4sten (z. B. Bodenverteilerk\u00e4sten) installiert und bietet eine zweite Ebene (Zwischenschutz).<\/div>\r\n
Kernaufgabe: Begrenzt die Restspannung auf ein sicheres Niveau f\u00fcr Endger\u00e4te und dient als prim\u00e4rer Schutz f\u00fcr empfindliche elektronische Ger\u00e4te.<\/div>\r\n
<\/div>\r\n
<\/div>\r\n

2.2 Haupttestparameter<\/h2>\r\n
Typ 1 SPD einphasig:<\/strong><\/div>\r\n
Impulse Current (I<sub>imp<\/sub>): The most critical parameter. It indicates the SPD's ability to withstand a typical lightning current, including peak current (10\/350\u03bcs waveform), charge quantity, and other comprehensive requirements. For example: 25 kA (10\/350\u03bcs).<\/div>\r\n
<\/div>\r\n
\"BR-20<\/a><\/div>\r\n
Typ 2 SPD:<\/strong><\/div>\r\n
Nomineller Entladestrom (In<\/sub>): Der Kernparameter. Es gibt den Standardpr\u00fcfstrom (8\/20\u03bcs-Wellenform) an, dem das SPD mehrfach standhalten kann. Zum Beispiel: 20 kA (8\/20\u03bcs).<\/div>\r\n
Maximaler Entladestrom (Imax<\/sub>): Gibt den maximalen Entladestrom (8\/20\u03bcs-Wellenform) an, dem das SPD in einem einzigen Vorgang standhalten kann.<\/div>\r\n
<\/div>\r\n
<\/div>\r\n
<\/div>\r\n

2.3 Testwellenformen<\/h2>\r\n10\/350\u03bcs waveform (for Type 1 testing): This waveform simulates some of the current characteristics of a direct lightning strike. Its current rise is slow, but its duration is long, carrying approximately 20 times the energy of the 8\/20\u03bcs waveform, making it extremely destructive.\r\n\r\n8\/20\u03bcs waveform (for Type 2 testing): This waveform simulates induced lightning and switching surges. The current rises quickly, its duration is short, and its energy is relatively small.\r\n\r\n \r\n

2.4 Installationsort<\/h2>\r\nType 1 lightning surge protection device: Installed in the building's main distribution panel (main incoming line box), located after the electricity meter and before or after the main circuit breaker (depending on product design).\r\n\r\nType 2 SPD: Installed in distribution panels, such as floor distribution boxes or distribution boxes in critical equipment rooms (e.g., data centers, elevator control rooms).\r\n\r\n \r\n

2.5 Zusammenhang des externen \u00dcberspannungsschutzsystems<\/h2>\r\nType 1 SPD: Must be installed at the power inlet of buildings equipped with external lightning protection systems (lightning rods, down conductors). This is a mandatory requirement of international standards (such as IEC 62305) because it effectively handles direct lightning current coupled from the down conductor to the power line.\r\n\r\nType 2 SPD: Not directly mandatory with external lightning protection systems. Type 2 SPDs are required to handle induced surges regardless of whether the building has an external lightning protection system.\r\n\r\n \r\n

2.6 Koordination<\/h2>\r\nSPDs vom Typ 1 und Typ 2 m\u00fcssen zusammenarbeiten. Zwischen ihnen muss ein bestimmter Leitungsabstand eingehalten werden (allgemein empfohlen werden mindestens 10 Meter), oder es sollten Entkopplungsvorrichtungen (z. B. spezielle Drosseln) verwendet werden, um sicherzustellen, dass im Falle einer \u00dcberspannung zuerst das SPD vom Typ 1 ausl\u00f6st, um den Gro\u00dfteil der Energie abzuleiten, und dann das SPD vom Typ 2 ausl\u00f6st, um die Restspannung auf ein niedrigeres Niveau zu begrenzen. Wenn der Abstand nicht ausreicht, kann eine gro\u00dfe \u00dcberspannung den Typ 1 umgehen und den Typ 2 besch\u00e4digen.\r\n\r\n \r\n

Ben\u00f6tige ich SPD Typ 1 oder Typ 2?<\/h2>\r\nDies ist ein Entscheidungsprozess, der Ihnen bei der Auswahl helfen soll:\r\n

Verf\u00fcgt das Geb\u00e4ude \u00fcber ein externes \u00dcberspannungsschutzsystem?<\/strong><\/h3>\r\nYes: You must install a Type 1 SPD in the main distribution box.\r\n\r\nNo\/Unsure: You can skip Type 1, but installing Type 2 is strongly recommended.\r\n

Bewertung des \u00dcberspannungsrisikos an der eingehenden Stromleitung<\/strong><\/h3>\r\nAuch ohne \u00e4u\u00dferes Blitzschutzsystem ist die Gefahr von Blitzeinschl\u00e4gen hoch, wenn Ihr Geb\u00e4ude auf freiem Feld, auf einem H\u00fcgel steht oder \u00fcber lange Freileitungen verf\u00fcgt. Die Installation eines SPD vom Typ 1 kann ein h\u00f6heres Schutzniveau bieten.\r\n

Entscheiden Sie sich f\u00fcr die Auswahl<\/strong><\/h3>\r\nScenario A (Standard residential building, no external lightning protection): Installing a Type 2 SPD in the main distribution box provides sufficient protection.\r\n\r\nScenario B (Villa\/commercial building with lightning rod): A Type 1 SPD must be installed in the main distribution box, and Type 2 SPDs must be installed in floor distribution boxes or distribution boxes for critical equipment.\r\n\r\nScenario C (Risk compromise): If space or budget is limited, a Type 1+2 combined SPD can be installed in the main distribution box (see FAQ).\r\n

Konzept des abgestuften (koordinierten) Schutzes<\/h2>\r\n

Warum ist ein abgestufter Schutz notwendig?<\/h3>\r\nNo single SPD can perfectly handle all types of surges. The concept of tiered protection is:\r\n\r\nType 1 (Level 1): Intercepts and discharges the vast majority of the enormous energy (e.g., 90%) at the inlet.\r\n\r\nType 2 (Level 2): \u200b\u200bFurther limits the residual surge voltage after the first level, bringing it within the equipment's safe range.\r\n\r\nType 3 (Fine Protection): Uses surge strips at the equipment end to provide fine protection for the last mile.\r\n\r\nThis is like a line of defense: the first line weakens the main force, the second line clears the residue, and ensures the safety of the main base (your equipment).\r\n

Typisches abgestuftes Schutzsystem<\/h3>\r\nA complete solution is as follows:\r\n\r\nLevel I: Main Distribution Box \u2192 Type 1 SPD\r\n\r\nLevel II: Floor Distribution Box \u2192 Type 2 SPD\r\n\r\nLevel III: Equipment Front-End (e.g., sockets) \u2192 Type 3 SPD (surge power strip)\r\n

FAQ<\/h2>\r\nKann ich sowohl einphasige SPD vom Typ 1 als auch vom Typ 2 installieren?<\/strong>\r\n\r\nAbsolutely, and it's best practice. Type 1 and Type 2 single phase SPDs work together to provide tiered protection from the inlet to the device.\r\n\r\nUnterschied zwischen kombiniertem SPD vom Typ 1+2 und der separaten Installation<\/strong>\r\n
Kombiniertes SPD vom Typ 1+2: Ein einzelnes Ger\u00e4t integriert sowohl Module vom Typ 1 als auch vom Typ 2. Zu seinen Vorteilen geh\u00f6ren die Platzersparnis und die einfache Installation, wodurch es sich besonders f\u00fcr Szenarien mit begrenztem Platzangebot im Hauptverteilerkasten eignet. Es hat die Koordinationstests bestanden, um eine ordnungsgem\u00e4\u00dfe Modulkompatibilit\u00e4t sicherzustellen.<\/div>\r\n
<\/div>\r\n
Separate Installation: Bietet maximale Flexibilit\u00e4t und Wartbarkeit. Wenn ein Typ-1-Modul besch\u00e4digt ist, kann nur das Typ-1-Modul ausgetauscht werden, ohne dass das Typ-2-Modul davon betroffen ist. Es muss jedoch auf einen ausreichenden Abstand zwischen ihnen geachtet werden oder eine Entkopplungsvorrichtung verwendet werden.<\/div>\r\n
<\/div>\r\nIch verwende \u00dcberspannungsschutzstreifen an meinen Steckdosen. Muss ich Typ-2-SPD installieren?<\/strong>\r\n\r\nAbsolutely necessary. Surge power strips (Type 3 SPDs) have limited discharge capabilities; they are designed to absorb very small residual surges at the device end. They cannot withstand major surge energy transmitted from the power line.\r\n\r\nWithout a Type 2 SPD dissipating energy at the pre-amplifier stage, a larger surge could directly destroy your surge power strip and connected devices. Type 2 SPDs are the mainstay in protecting the entire circuit branch.\r\n\r\n \r\n\r\nEinphasiges SPD im Vergleich zum dreiphasigen Typ-1-SPD<\/strong>\r\n\r\nEinphasige SPDs werden in einphasigen Stromversorgungssystemen (ein stromf\u00fchrender Draht und ein Neutralleiter) verwendet, w\u00e4hrend dreiphasige SPDs vom Typ 1 in dreiphasigen Stromversorgungssystemen (drei stromf\u00fchrende Dr\u00e4hte und ein Neutralleiter oder drei stromf\u00fchrende Dr\u00e4hte, ein Neutralleiter und ein Erdungsdraht) verwendet werden und alle Phasendr\u00e4hte vor massiven \u00dcberspannungseinwirkungen wie direkten Blitzeinschl\u00e4gen sch\u00fctzen sollen.\r\n

Abschluss<\/h2>\r\n
SPD Typ 1 vs. Typ 2? Die Wahl zwischen SPDs vom Typ 1 und Typ 2 ist keine Entweder-Oder-Frage, sondern vielmehr eine Frage, wie eine wirksame Blitzschutzhierarchie aufgebaut werden kann.<\/div>\r\n
Type 1 SPDs are the \"heavy armor\" against direct lightning strikes and are the mandatory first choice for buildings with external lightning protection systems.<\/div>\r\n
Type 2 SPDs are the \"main force\" against everyday surges and are core protection equipment that almost all buildings should have installed.<\/div>\r\n
Die sicherste und zuverl\u00e4ssigste Strategie besteht darin, einem abgestuften Schutzprinzip zu folgen: Typ 1 an Haupteing\u00e4ngen, Typ 2 an Verteilerk\u00e4sten und \u00dcberspannungsschutzleisten an den endg\u00fcltigen Ger\u00e4testandorten einzusetzen. Durch dieses mehrschichtige Schutzsystem k\u00f6nnen Sie den umfassendsten Schutz f\u00fcr Ihre elektrische Ausr\u00fcstung und Ihr Eigentum bieten.<\/div>","protected":false},"featured_media":2246,"parent":0,"menu_order":106,"template":"","meta":{"_acf_changed":false},"blog_category":[9],"class_list":["post-2241","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-industry-news"],"acf":{"des":"Comparison of Type 1 surge protection device and Type 2 SPD to help you understand their differences, application scenarios, and make the right choice.","txt":"In modern electrical systems, surge protectors (SPDs) are critical devices for protecting against damage from lightning strikes and switch surges. However, many people are confused by the different types, such as Type 1 and Type 2\u00a0surge protection device.\r\n\r\nWhat Is the difference between Type 1 and Type 2 SPD?This article will provide an in-depth comparison of Type 1 surge protection device<\/strong><\/a> and Type 2 SPDs to help you understand their differences, application scenarios, and make the right choice.\r\n\r\n \r\n

2. Type 1 Surge Protection Device Vs Type 2 SPD<\/h2>\r\nSurge protectors (SPDs) are the \"safety valves\" of electrical systems. Type 1 and Type 2 are the two most commonly used SPDs. They each have their own functions and work together to build a complete protection system.\r\n

2.1 Main function of Type 1 and Type 2 SPD<\/h2>\r\n\"BR-25M<\/a>\r\n
Type 1 SPD (Lightning Current Discharge Device):<\/strong><\/div>\r\n
Main Function: Provides protection from direct lightning strikes or partial lightning currents. Usually placed at the main entry point of a building, it gives first-level (basic) protection.<\/div>\r\n
Core Task: Handles and redirects large lightning currents to stop damage to equipment and lines downstream.<\/div>\r\n
<\/div>\r\n
Type 2 SPD (Pressure Control Device):<\/strong><\/div>\r\n
Main Function: Used for protection against surges from switch operation and residual surges from induced lightning strikes. It is typically installed in distribution boxes (such as floor distribution boxes) and provides second-level (intermediate protection).<\/div>\r\n
Core Task: Limits residual voltage to a safe level for terminal equipment, serving as the primary protection for sensitive electronic equipment.<\/div>\r\n
<\/div>\r\n
<\/div>\r\n

2.2 Main Test Parameters<\/h2>\r\n
Type 1 SPD Single Phase:<\/strong><\/div>\r\n
Impulse Current (I<sub>imp<\/sub>): The most critical parameter. It indicates the SPD's ability to withstand a typical lightning current, including peak current (10\/350\u03bcs waveform), charge quantity, and other comprehensive requirements. For example: 25 kA (10\/350\u03bcs).<\/div>\r\n
<\/div>\r\n
\"BR-20<\/a><\/div>\r\n
Type 2 SPD:<\/strong><\/div>\r\n
Nominal Discharge Current (I<sub>n<\/sub>): The core parameter. It indicates the standard test current (8\/20\u03bcs waveform) that the SPD can withstand multiple times. For example: 20 kA (8\/20\u03bcs).<\/div>\r\n
Maximum Discharge Current (I<sub>max<\/sub>): Indicates the maximum discharge current (8\/20\u03bcs waveform) that the SPD can withstand in a single operation.<\/div>\r\n
<\/div>\r\n
<\/div>\r\n
<\/div>\r\n

2.3 Test Waveforms<\/h2>\r\n10\/350\u03bcs waveform (for Type 1 testing): This waveform simulates some of the current characteristics of a direct lightning strike. Its current rise is slow, but its duration is long, carrying approximately 20 times the energy of the 8\/20\u03bcs waveform, making it extremely destructive.\r\n\r\n8\/20\u03bcs waveform (for Type 2 testing): This waveform simulates induced lightning and switching surges. The current rises quickly, its duration is short, and its energy is relatively small.\r\n\r\n \r\n

2.4 Installation Location<\/h2>\r\nType 1 lightning surge protection device: Installed in the building's main distribution panel (main incoming line box), located after the electricity meter and before or after the main circuit breaker (depending on product design).\r\n\r\nType 2 SPD: Installed in distribution panels, such as floor distribution boxes or distribution boxes in critical equipment rooms (e.g., data centers, elevator control rooms).\r\n\r\n \r\n

2.5 Reltation of External Surge Protection System<\/h2>\r\nType 1 SPD: Must be installed at the power inlet of buildings equipped with external lightning protection systems (lightning rods, down conductors). This is a mandatory requirement of international standards (such as IEC 62305) because it effectively handles direct lightning current coupled from the down conductor to the power line.\r\n\r\nType 2 SPD: Not directly mandatory with external lightning protection systems. Type 2 SPDs are required to handle induced surges regardless of whether the building has an external lightning protection system.\r\n\r\n \r\n

2.6 Coordination<\/h2>\r\nType 1 and Type 2 SPDs need to work together. A certain line distance must be maintained between them (generally recommended to be at least 10 meters), or decoupling devices (such as dedicated reactors) should be used to ensure that, in the event of a surge, the Type 1 SPD trips first to dissipate most of the energy, and then the Type 2 SPD trips to limit the residual voltage to a lower level. If the distance is insufficient, a large surge may bypass the Type 1 and damage the Type 2.\r\n\r\n \r\n

Do I Need Type 1 Or Type 2 SPD?<\/h2>\r\nThis is a decision-making process to help you make a choice:\r\n

Does The Building Have An External Surge Protection System?<\/strong><\/h3>\r\nYes: You must install a Type 1 SPD in the main distribution box.\r\n\r\nNo\/Unsure: You can skip Type 1, but installing Type 2 is strongly recommended.\r\n

Surge Risk Assessment At Incoming Power Line<\/strong><\/h3>\r\nEven without an external lightning protection system, if your building is located in an open area, on a hilltop, or has long overhead power lines, the risk of lightning strikes is high. Installing a Type 1 SPD can provide a higher level of protection.\r\n

Decide Selection<\/strong><\/h3>\r\nScenario A (Standard residential building, no external lightning protection): Installing a Type 2 SPD in the main distribution box provides sufficient protection.\r\n\r\nScenario B (Villa\/commercial building with lightning rod): A Type 1 SPD must be installed in the main distribution box, and Type 2 SPDs must be installed in floor distribution boxes or distribution boxes for critical equipment.\r\n\r\nScenario C (Risk compromise): If space or budget is limited, a Type 1+2 combined SPD can be installed in the main distribution box (see FAQ).\r\n

Concept Of Graded (Coordinated) Protection<\/h2>\r\n

Why Is Graded Protection Necessary?<\/h3>\r\nNo single SPD can perfectly handle all types of surges. The concept of tiered protection is:\r\n\r\nType 1 (Level 1): Intercepts and discharges the vast majority of the enormous energy (e.g., 90%) at the inlet.\r\n\r\nType 2 (Level 2): \u200b\u200bFurther limits the residual surge voltage after the first level, bringing it within the equipment's safe range.\r\n\r\nType 3 (Fine Protection): Uses surge strips at the equipment end to provide fine protection for the last mile.\r\n\r\nThis is like a line of defense: the first line weakens the main force, the second line clears the residue, and ensures the safety of the main base (your equipment).\r\n

Typical Graded Protection Scheme<\/h3>\r\nA complete solution is as follows:\r\n\r\nLevel I: Main Distribution Box \u2192 Type 1 SPD\r\n\r\nLevel II: Floor Distribution Box \u2192 Type 2 SPD\r\n\r\nLevel III: Equipment Front-End (e.g., sockets) \u2192 Type 3 SPD (surge power strip)\r\n

FAQ<\/h2>\r\nCan I Install Both Type 1 And Type 2 Single Phase SPD?<\/strong>\r\n\r\nAbsolutely, and it's best practice. Type 1 and Type 2 single phase SPDs work together to provide tiered protection from the inlet to the device.\r\n\r\nDifference Between Type 1+2 Combined Spd And Installing Them Separately<\/strong>\r\n
Type 1+2 Combined SPD: A single device integrates both Type 1 and Type 2 modules. Its advantages include space saving and easy installation, making it particularly suitable for scenarios with limited space in the main distribution box. It has passed coordination testing to ensure proper module compatibility.<\/div>\r\n
<\/div>\r\n
Separate Installation: Offers maximum flexibility and maintainability. If a Type 1 module is damaged, only the Type 1 module can be replaced without affecting the Type 2 module. However, sufficient distance must be ensured between them, or a decoupling device must be used.<\/div>\r\n
<\/div>\r\nI Use Surge Strips On My Outlets. Do I Need To Install Type 2 SPD?<\/strong>\r\n\r\nAbsolutely necessary. Surge power strips (Type 3 SPDs) have limited discharge capabilities; they are designed to absorb very small residual surges at the device end. They cannot withstand major surge energy transmitted from the power line.\r\n\r\nWithout a Type 2 SPD dissipating energy at the pre-amplifier stage, a larger surge could directly destroy your surge power strip and connected devices. Type 2 SPDs are the mainstay in protecting the entire circuit branch.\r\n\r\n \r\n\r\nSingle Phase SPD VS Three phase Type 1 SPD<\/strong>\r\n\r\nSingle-phase SPDs are used in single-phase power supply systems (one live wire and one neutral wire), while three-phase Type 1 SPDs are used in three-phase power supply systems (three live wires and one neutral wire or three live wires, one neutral wire, and one ground wire), designed to protect all phase wires from massive surge impacts such as direct lightning strikes.\r\n

Conclusion<\/h2>\r\n
SPD Type 1 Vs Type 2?Choosing between Type 1 and Type 2 SPDs is not an either-or question, but rather a question of how to build an effective lightning protection hierarchy.<\/div>\r\n
Type 1 SPDs are the \"heavy armor\" against direct lightning strikes and are the mandatory first choice for buildings with external lightning protection systems.<\/div>\r\n
Type 2 SPDs are the \"main force\" against everyday surges and are core protection equipment that almost all buildings should have installed.<\/div>\r\n
The safest and most reliable strategy is to follow a tiered protection principle: deploy Type 1 at main entrances, Type 2 at distribution boxes, and surge strips at final equipment locations. Through this layered protection system, you can provide the most comprehensive protection for your electrical equipment and property.<\/div>"},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/de\/wp-json\/wp\/v2\/blog\/2241","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\/2246"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/de\/wp-json\/wp\/v2\/media?parent=2241"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/de\/wp-json\/wp\/v2\/blog_category?post=2241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}