{"id":834,"date":"2023-12-18T14:54:24","date_gmt":"2023-12-18T06:54:24","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&p=834"},"modified":"2025-11-03T17:16:03","modified_gmt":"2025-11-03T09:16:03","slug":"difference-between-type-1-type-2-and-type-3-surge-protective-devices","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/el\/blog\/difference-between-type-1-type-2-and-type-3-surge-protective-devices\/","title":{"rendered":"\u03a0\u03bf\u03b9\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b7 \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03ac \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03c9\u03bd \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ce\u03bd \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b1\u03c2 \u03b1\u03c0\u03cc \u03c5\u03c0\u03b5\u03c1\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03c4\u03cd\u03c0\u03bf\u03c5 1, \u03c4\u03cd\u03c0\u03bf\u03c5 2 \u03ba\u03b1\u03b9 \u03c4\u03cd\u03c0\u03bf\u03c5 3;"},"content":{"rendered":"\u03a4\u03cd\u03c0\u03bf\u03c2 1<\/strong>\r\nType 1 Surge Protective Device (SPD)s are intended for installation between the secondary of the service transformer and the line side of the service equipment overcurrent device, as well as the load side, including watt-hour meter socket enclosures, and are intended to be installed without an external overcurrent protective device. Type 1 devices are dual-rated for Type 2 applications as well, providing the highest ratings available for installation at the service entrance.\r\n\r\nType 1 SPD can dis\u00adcharge light\u00adning cur\u00adrent with wave\u00adform 10\/\u200b350\u03bcs. This, if re\u00adquired, will be in\u00adstalled in the primary dis\u00adtri\u00adbu\u00adtion board at the ori\u00adgin of the elec\u00adtrical in\u00adstall\u00ada\u00adtion. A Type 1 SPD does not in it\u00adself of\u00adfer the re\u00adquired pro\u00adtec\u00adtion level and must be used in con\u00adjunc\u00adtion with co\u00adordin\u00adated type 2 devices. An in\u00adstall\u00ada\u00adtion with a light\u00adning pro\u00adtec\u00adtion sys\u00adtem will re\u00adquire a Type 1 SPD.\r\n\"BR-20<\/a>\r\n\u03a4\u03cd\u03c0\u03bf\u03c2 2<\/strong>\r\n\u03a3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ae \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b1\u03c2 \u03b1\u03c0\u03cc \u03c5\u03c0\u03b5\u03c1\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03c4\u03cd\u03c0\u03bf\u03c5 2<\/strong><\/a>\u2014Type 2 SPDs are intended for installation on the load side of the service equipment overcurrent device, including SPDs located at the branch panel.\r\n\r\nType 2 SPD can discharge \u00a08\/\u200b20\u03bcs current wave , they can pre\u00advent the damage of transient over\u00advoltage in the elec\u00adtrical in\u00adstall\u00ada\u00adtions and pro\u00adtects equip\u00adment con\u00adnec\u00adted to it. It usu\u00adally em\u00adploys metal ox\u00adide varis\u00adtor (MOV) tech\u00adno\u00adlogy. The device would nor\u00admally be installed in sub-dis\u00adtri\u00adbu\u00adtion boards and in the primary dis\u00adtri\u00adbu\u00adtion board if there was no re\u00adquire\u00adment for a type 1 device\r\n\r\n\"BR-40DP<\/a>\r\n\u03a4\u03cd\u03c0\u03bf\u03c2 3<\/strong>\r\n\u0391\u03c5\u03c4\u03ac \u03c4\u03b1 SPD \u03ad\u03c7\u03bf\u03c5\u03bd \u03c7\u03b1\u03bc\u03b7\u03bb\u03ae \u03b9\u03ba\u03b1\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 \u03b5\u03ba\u03c6\u03cc\u03c1\u03c4\u03b9\u03c3\u03b7\u03c2. \u0395\u03c0\u03bf\u03bc\u03ad\u03bd\u03c9\u03c2, \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03bc\u03cc\u03bd\u03bf \u03c9\u03c2 \u03c3\u03c5\u03bc\u03c0\u03bb\u03ae\u03c1\u03c9\u03bc\u03b1 \u03c4\u03bf\u03c5 SPD \u03c4\u03cd\u03c0\u03bf\u03c5 2 \u03ba\u03b1\u03b9 \u03ba\u03bf\u03bd\u03c4\u03ac \u03c3\u03b5 \u03b5\u03c5\u03b1\u03af\u03c3\u03b8\u03b7\u03c4\u03b1 \u03c6\u03bf\u03c1\u03c4\u03af\u03b1. \u03a4\u03cd\u03c0\u03bf\u03c2 3 SPD<\/strong><\/a>\u2019s are characterized by a com\u00adbin\u00ada\u00adtion of voltage waves (1.2\/\u200b50 \u03bcs) and cur\u00adrent waves (8\/\u200b20 \u03bcs).\r\n\r\nType 3 SPDs are normally installed right before the protected equipment.\r\n\r\n\"\"<\/a>\r\n\r\n\u039f\u03c1\u03bf\u03bb\u03bf\u03b3\u03af\u03b1<\/strong>\r\n\r\nIimp \u2013 Im\u00adpulse cur\u00adrent of Type 1 SP\u00adDs with 10\/\u200b350 \u03bcs wave\u00adform\r\n\r\nIn \u2013\u00a0 Norminal discharge current of Type 2 SPDs with 8\/\u200b20 \u03bcs wave\u00adform\r\n\r\nImax- Maximum discharge current of Type 2 SPDs with 8\/\u200b20 \u03bcs wave\u00adform\r\nUp \u2013 The re\u00adsid\u00adual voltage that is meas\u00adured across the ter\u00adminal of the SPD when In is ap\u00adplied\r\nUc \u2013 The max\u00adimum voltage which may be con\u00adtinu\u00adously ap\u00adplied to the SPD without damage the SPD\r\n\r\nBritec Electric offers full range of surge protective devices including Type 1, Type 1+2, Type 2 and Type 3 SPDs.","protected":false},"featured_media":835,"parent":0,"menu_order":144,"template":"","meta":{"_acf_changed":false},"blog_category":[8],"class_list":["post-834","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-company-news"],"acf":{"des":"Type 1 Surge Protective Device (SPD)s are intended for installation between the secondary of the service transformer and the line side of the service equipment overcurrent device, as well as the load side, including watt-hour meter socket enclosures, and are intended to be installed without an external overcurrent protective device.","txt":"Type 1<\/strong>\r\nType 1 Surge Protective Device (SPD)s are intended for installation between the secondary of the service transformer and the line side of the service equipment overcurrent device, as well as the load side, including watt-hour meter socket enclosures, and are intended to be installed without an external overcurrent protective device. Type 1 devices are dual-rated for Type 2 applications as well, providing the highest ratings available for installation at the service entrance.\r\n\r\nType 1 SPD can dis\u00adcharge light\u00adning cur\u00adrent with wave\u00adform 10\/\u200b350\u03bcs. This, if re\u00adquired, will be in\u00adstalled in the primary dis\u00adtri\u00adbu\u00adtion board at the ori\u00adgin of the elec\u00adtrical in\u00adstall\u00ada\u00adtion. A Type 1 SPD does not in it\u00adself of\u00adfer the re\u00adquired pro\u00adtec\u00adtion level and must be used in con\u00adjunc\u00adtion with co\u00adordin\u00adated type 2 devices. An in\u00adstall\u00ada\u00adtion with a light\u00adning pro\u00adtec\u00adtion sys\u00adtem will re\u00adquire a Type 1 SPD.\r\n\"BR-20<\/a>\r\nType 2<\/strong>\r\nType 2 Surge Protective Device<\/strong><\/a>\u2014Type 2 SPDs are intended for installation on the load side of the service equipment overcurrent device, including SPDs located at the branch panel.\r\n\r\nType 2 SPD can discharge \u00a08\/\u200b20\u03bcs current wave , they can pre\u00advent the damage of transient over\u00advoltage in the elec\u00adtrical in\u00adstall\u00ada\u00adtions and pro\u00adtects equip\u00adment con\u00adnec\u00adted to it. It usu\u00adally em\u00adploys metal ox\u00adide varis\u00adtor (MOV) tech\u00adno\u00adlogy. The device would nor\u00admally be installed in sub-dis\u00adtri\u00adbu\u00adtion boards and in the primary dis\u00adtri\u00adbu\u00adtion board if there was no re\u00adquire\u00adment for a type 1 device\r\n\r\n\"BR-40DP<\/a>\r\nType 3<\/strong>\r\nThese SPDs have a low dis\u00adcharge ca\u00adpa\u00adcity. They must there\u00adfore only be in\u00adstalled as a sup\u00adple\u00adment to Type 2 SPD and in the vi\u00adcin\u00adity of sens\u00adit\u00adive loads. Type 3 SP\u00adD<\/strong><\/a>\u2019s are characterized by a com\u00adbin\u00ada\u00adtion of voltage waves (1.2\/\u200b50 \u03bcs) and cur\u00adrent waves (8\/\u200b20 \u03bcs).\r\n\r\nType 3 SPDs are normally installed right before the protected equipment.\r\n\r\n\"\"<\/a>\r\n\r\nTer\u00admin\u00ado\u00adlogy<\/strong>\r\n\r\nIimp \u2013 Im\u00adpulse cur\u00adrent of Type 1 SP\u00adDs with 10\/\u200b350 \u03bcs wave\u00adform\r\n\r\nIn \u2013\u00a0 Norminal discharge current of Type 2 SPDs with 8\/\u200b20 \u03bcs wave\u00adform\r\n\r\nImax- Maximum discharge current of Type 2 SPDs with 8\/\u200b20 \u03bcs wave\u00adform\r\nUp \u2013 The re\u00adsid\u00adual voltage that is meas\u00adured across the ter\u00adminal of the SPD when In is ap\u00adplied\r\nUc \u2013 The max\u00adimum voltage which may be con\u00adtinu\u00adously ap\u00adplied to the SPD without damage the SPD\r\n\r\nBritec Electric offers full range of surge protective devices including Type 1, Type 1+2, Type 2 and Type 3 SPDs."},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/blog\/834","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/media\/835"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/media?parent=834"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/el\/wp-json\/wp\/v2\/blog_category?post=834"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}