{"id":14248,"date":"2026-03-22T14:47:00","date_gmt":"2026-03-22T06:47:00","guid":{"rendered":"https:\/\/www.tosunlux.eu\/?p=14248"},"modified":"2026-03-28T16:34:53","modified_gmt":"2026-03-28T08:34:53","slug":"3-pole-vs-4-pole-isolator-switch-when-how-to-use","status":"publish","type":"post","link":"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/","title":{"rendered":"3-\u0642\u0637\u0628 \u0628\u0645\u0642\u0627\u0628\u0644\u06c1 4-\u0642\u0637\u0628 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686\u0632: \u06c1\u0631 \u0627\u06cc\u06a9 \u06a9\u0648 \u06a9\u0628 \u0627\u0648\u0631 \u06a9\u06cc\u0633\u06d2 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u06cc\u0627 \u062c\u0627\u0626\u06d2\u06d4"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_63 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" >\u0645\u0646\u062f\u0631\u062c\u0627\u062a \u06a9\u0627 \u062c\u062f\u0648\u0644<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u0645\u0648\u0627\u062f \u06a9\u0627 \u0679\u06cc\u0628\u0644 \u0679\u0648\u06af\u0644 \u06a9\u0631\u06cc\u06ba\u06d4\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u0679\u0648\u06af\u0644 \u06a9\u0631\u06cc\u06ba\u06d4<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#Understanding_the_Basics_What_Is_a_4-Pole_Isolator_Switch\" title=\"\u0628\u0646\u06cc\u0627\u062f\u06cc \u0628\u0627\u062a\u0648\u06ba \u06a9\u0648 \u0633\u0645\u062c\u06be\u0646\u0627: 4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u06cc\u0627 \u06c1\u06d2\u061f\">\u0628\u0646\u06cc\u0627\u062f\u06cc \u0628\u0627\u062a\u0648\u06ba \u06a9\u0648 \u0633\u0645\u062c\u06be\u0646\u0627: 4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u06cc\u0627 \u06c1\u06d2\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#Comparing_3-Pole_and_4-Pole_Isolator_Switches\" title=\"3-\u067e\u0648\u0644 \u0627\u0648\u0631 4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686\u0632 \u06a9\u0627 \u0645\u0648\u0627\u0632\u0646\u06c1 \u06a9\u0631\u0646\u0627\">3-\u067e\u0648\u0644 \u0627\u0648\u0631 4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686\u0632 \u06a9\u0627 \u0645\u0648\u0627\u0632\u0646\u06c1 \u06a9\u0631\u0646\u0627<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#How_to_Decide_Between_3-Pole_and_4-Pole_in_Real_Projects\" title=\"How to Decide Between 3-Pole and 4-Pole in Real Projects\">How to Decide Between 3-Pole and 4-Pole in Real Projects<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#When_to_Use_a_3-Pole_Isolator_Switch\" title=\"3-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0628 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u06cc\u06ba\u06d4\">3-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0628 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u06cc\u06ba\u06d4<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#When_to_Use_a_4-Pole_Isolator_Switch\" title=\"4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0628 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u06cc\u06ba\u06d4\">4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0628 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u06cc\u06ba\u06d4<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#Solar_PV_Systems\" title=\"\u0633\u0648\u0644\u0631 \u067e\u06cc \u0648\u06cc \u0633\u0633\u0679\u0645\u0632\">\u0633\u0648\u0644\u0631 \u067e\u06cc \u0648\u06cc \u0633\u0633\u0679\u0645\u0632<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#Generator_Systems\" title=\"\u062c\u0646\u0631\u06cc\u0679\u0631 \u0633\u0633\u0679\u0645\u0632\">\u062c\u0646\u0631\u06cc\u0679\u0631 \u0633\u0633\u0679\u0645\u0632<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#Sensitive_Loads\" title=\"Sensitive Loads\">Sensitive Loads<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#TT_or_TN-C-S_Systems\" title=\"TT or TN-C-S Systems\">TT or TN-C-S Systems<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#4-Pole_Isolator_Switch_Wiring_Diagram_How_to_Connect\" title=\"4-Pole Isolator Switch Wiring Diagram: How to Connect\">4-Pole Isolator Switch Wiring Diagram: How to Connect<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#Benefits_of_Using_a_4-Pole_Isolator_Switch\" title=\"4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u0646\u06d2 \u06a9\u06d2 \u0641\u0648\u0627\u0626\u062f\">4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u0646\u06d2 \u06a9\u06d2 \u0641\u0648\u0627\u0626\u062f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#Common_Mistakes_to_Avoid_When_Choosing_Isolators\" title=\"Isolators \u06a9\u0627 \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0631\u062a\u06d2 \u0648\u0642\u062a \u0633\u06d2 \u0628\u0686\u0646\u06d2 \u06a9\u06d2 \u0644\u06cc\u06d2 \u0639\u0627\u0645 \u063a\u0644\u0637\u06cc\u0627\u06ba\">Isolators \u06a9\u0627 \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0631\u062a\u06d2 \u0648\u0642\u062a \u0633\u06d2 \u0628\u0686\u0646\u06d2 \u06a9\u06d2 \u0644\u06cc\u06d2 \u0639\u0627\u0645 \u063a\u0644\u0637\u06cc\u0627\u06ba<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#FAQ\" title=\"\u0627\u06a9\u062b\u0631 \u067e\u0648\u0686\u06be\u06d2 \u06af\u0626\u06d2 \u0633\u0648\u0627\u0644\u0627\u062a\">\u0627\u06a9\u062b\u0631 \u067e\u0648\u0686\u06be\u06d2 \u06af\u0626\u06d2 \u0633\u0648\u0627\u0644\u0627\u062a<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#What_is_a_4-pole_isolator_switch\" title=\"4-\u0642\u0637\u0628 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u06cc\u0627 \u06c1\u06d2\u061f\">4-\u0642\u0637\u0628 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u06cc\u0627 \u06c1\u06d2\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#When_should_I_use_a_4-pole_isolator_switch\" title=\"\u0645\u062c\u06be\u06d2 4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0628 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u0646\u0627 \u0686\u0627\u06c1\u06cc\u06d2\u061f\">\u0645\u062c\u06be\u06d2 4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0628 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u0646\u0627 \u0686\u0627\u06c1\u06cc\u06d2\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#Is_a_3-pole_isolator_switch_enough_for_most_industrial_applications\" title=\"\u06a9\u06cc\u0627 \u0632\u06cc\u0627\u062f\u06c1 \u062a\u0631 \u0635\u0646\u0639\u062a\u06cc \u0627\u06cc\u067e\u0644\u06cc \u06a9\u06cc\u0634\u0646\u0632 \u06a9\u06d2 \u0644\u06cc\u06d2 3-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0627\u0641\u06cc \u06c1\u06d2\u061f\">\u06a9\u06cc\u0627 \u0632\u06cc\u0627\u062f\u06c1 \u062a\u0631 \u0635\u0646\u0639\u062a\u06cc \u0627\u06cc\u067e\u0644\u06cc \u06a9\u06cc\u0634\u0646\u0632 \u06a9\u06d2 \u0644\u06cc\u06d2 3-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0627\u0641\u06cc \u06c1\u06d2\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#How_does_a_4-pole_isolator_improve_safety\" title=\"4 \u0642\u0637\u0628\u06cc \u0627\u0644\u06af \u062a\u06be\u0644\u06af \u062d\u0641\u0627\u0638\u062a \u06a9\u0648 \u06a9\u06cc\u0633\u06d2 \u0628\u06c1\u062a\u0631 \u0628\u0646\u0627\u062a\u0627 \u06c1\u06d2\u061f\">4 \u0642\u0637\u0628\u06cc \u0627\u0644\u06af \u062a\u06be\u0644\u06af \u062d\u0641\u0627\u0638\u062a \u06a9\u0648 \u06a9\u06cc\u0633\u06d2 \u0628\u06c1\u062a\u0631 \u0628\u0646\u0627\u062a\u0627 \u06c1\u06d2\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#Where_can_I_find_a_4-pole_isolator_switch_wiring_diagram\" title=\"\u0645\u062c\u06be\u06d2 4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u0648\u0627\u0626\u0631\u0646\u06af \u0688\u0627\u06cc\u0627\u06af\u0631\u0627\u0645 \u06a9\u06c1\u0627\u06ba \u0633\u06d2 \u0645\u0644 \u0633\u06a9\u062a\u0627 \u06c1\u06d2\u061f\">\u0645\u062c\u06be\u06d2 4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u0648\u0627\u0626\u0631\u0646\u06af \u0688\u0627\u06cc\u0627\u06af\u0631\u0627\u0645 \u06a9\u06c1\u0627\u06ba \u0633\u06d2 \u0645\u0644 \u0633\u06a9\u062a\u0627 \u06c1\u06d2\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#What_is_the_difference_between_a_3-pole_and_a_4-pole_isolator_switch\" title=\"What is the difference between a 3-pole and a 4-pole isolator switch?\">What is the difference between a 3-pole and a 4-pole isolator switch?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#Do_I_need_a_4-pole_isolator_for_solar_panels\" title=\"Do I need a 4-pole isolator for solar panels?\">Do I need a 4-pole isolator for solar panels?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#Can_I_use_a_3-pole_isolator_switch_with_a_generator\" title=\"Can I use a 3-pole isolator switch with a generator?\">Can I use a 3-pole isolator switch with a generator?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/#Conclusion\" title=\"\u0646\u062a\u06cc\u062c\u06c1\">\u0646\u062a\u06cc\u062c\u06c1<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>In a three-phase system, the choice between a 3-pole and a 4-pole isolator switch depends on one key question: Does the neutral also need to be disconnected?<\/p>\n\n\n\n<p>A 3-pole isolator disconnects the three live conductors only. A 4-pole isolator disconnects the three phases plus the neutral, which is often preferred in generator connections, PV systems, TT earthing arrangements, and installations with sensitive electronic loads.<\/p>\n\n\n\n<p>This guide explains the practical difference when each option is used, what mistakes to avoid, and how to make a safer selection for industrial and commercial projects.<\/p>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  \n  <title>\u06c1\u06cc\u0631\u0648 \u067e\u0631\u0648\u0688\u06a9\u0679 \u06c1\u0627\u0626\u06cc \u0644\u0627\u0626\u0679<\/title>\n  <style>\n    .hero-card {\n      display: flex;\n      flex-wrap: wrap;\n      align-items: center;\n      background: #f7f8fa;\n      border-radius: 16px;\n      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);\n      padding: 24px;\n      max-width: 900px;\n      margin: 40px auto;\n      font-family: Arial, sans-serif;\n      text-decoration: none;\n      color: inherit;\n font-family: 'Poppins';\n    }\n\n    .hero-image {\n      width: 220px;\n      height: auto;\n      border-radius: 12px;\n      object-fit: cover;\n      flex-shrink: 0;\n    }\n\n    .hero-content {\n      padding-left: 24px;\n      flex: 1;\n      min-width: 260px;\n    }\n\n    .hero-title {\n      font-size: 1.6rem;\n      font-weight: bold;\n      margin-bottom: 12px;\n      color: #222;\n      font-family: 'Poppins',\n    }\n\n    .hero-description {\n      font-size: 1rem;\n      color: #555;\n      margin-bottom: 18px;\n    }\n\n    .hero-link {\n      display: inline-block;\n      padding: 10px 20px;\n      background-color: #0066cc;\n      color: #fff;\n      text-decoration: none;\n      border-radius: 8px;\n      font-weight: bold;\n      transition: background 0.2s ease-in-out;\n    }\n\n    .hero-link:hover {\n      background-color: #004c99;\n    }\n\n    @media (max-width: 640px) {\n      .hero-card {\n        flex-direction: column;\n        text-align: center;\n      }\n\n      .hero-content {\n        padding-left: 0;\n        padding-top: 20px;\n      }\n\n      .hero-image {\n        width: 100%;\n        max-width: 280px;\n      }\n    }\n  <\/style>\n<\/head>\n<body>\n\n<a class=\"hero-card\" href=\"https:\/\/www.tosunlux.eu\/ur\/product\/\" target=\"_blank\">\n  <img decoding=\"async\" class=\"hero-image\" src=\"https:\/\/bunny-wp-pullzone-8eh7ulciaa.b-cdn.net\/wp-content\/uploads\/2024\/06\/DSC08160_%E5%89%AF%E6%9C%AC-1-1.webp\" alt=\"\u0628\u062c\u0644\u06cc \u06a9\u06cc \u0641\u0631\u0627\u06c1\u0645\u06cc \u06a9\u0627 \u062a\u06be\u0648\u06a9 \u0641\u0631\u0648\u0634\">\n  <div class=\"hero-content\">\n    <div class=\"hero-title\">\u0627\u0644\u06cc\u06a9\u0679\u0631\u06cc\u06a9\u0644 \u0633\u067e\u0644\u0627\u0626\u06cc \u062a\u06be\u0648\u06a9 \u0641\u0631\u0648\u0634<\/div>\n    <div class=\"hero-description\">\u0627\u06cc\u06a9 \u0642\u0627\u0628\u0644 \u0627\u0639\u062a\u0645\u0627\u062f \u0627\u0644\u06cc\u06a9\u0679\u0631\u06cc\u06a9\u0644 \u0633\u067e\u0644\u0627\u0626\u06cc \u062a\u06be\u0648\u06a9 \u0641\u0631\u0648\u0634 \u0633\u06d2 \u0628\u0631\u0642\u06cc \u0645\u0635\u0646\u0648\u0639\u0627\u062a \u06a9\u06cc \u0645\u06a9\u0645\u0644 \u0631\u06cc\u0646\u062c \u062f\u0631\u06cc\u0627\u0641\u062a \u06a9\u0631\u06cc\u06ba\u06d4 TOSUNlux \u0639\u0627\u0644\u0645\u06cc \u0645\u0646\u0688\u06cc\u0648\u06ba \u06a9\u06d2 \u0644\u06cc\u06d2 \u0633\u0631\u06a9\u0679 \u0628\u0631\u06cc\u06a9\u0631\u060c \u0631\u0627\u0628\u0637\u06c1 \u06a9\u0627\u0631\u060c \u0633\u0648\u0626\u0686\u0632 \u0627\u0648\u0631 \u0628\u06c1\u062a \u06a9\u0686\u06be \u067e\u06cc\u0634 \u06a9\u0631\u062a\u0627 \u06c1\u06d2\u06d4<\/div>\n    <span class=\"hero-link\">\u067e\u0631\u0648\u0688\u06a9\u0679 \u062f\u06cc\u06a9\u06be\u06cc\u06ba<\/span>\n  <\/div>\n<\/a>\n\n<\/body>\n<\/html>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Understanding_the_Basics_What_Is_a_4-Pole_Isolator_Switch\"><\/span><strong>\u0628\u0646\u06cc\u0627\u062f\u06cc \u0628\u0627\u062a\u0648\u06ba \u06a9\u0648 \u0633\u0645\u062c\u06be\u0646\u0627: 4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u06cc\u0627 \u06c1\u06d2\u061f<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"553\" src=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2025\/07\/image-1024x553.jpeg\" alt=\"3-\u0642\u0637\u0628 \u0628\u0645\u0642\u0627\u0628\u0644\u06c1 4-\u0642\u0637\u0628 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686\u0632: \u06c1\u0631 \u0627\u06cc\u06a9 \u06a9\u0648 \u06a9\u0628 \u0627\u0648\u0631 \u06a9\u06cc\u0633\u06d2 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u06cc\u0627 \u062c\u0627\u0626\u06d2\u06d4\" class=\"wp-image-14273\" srcset=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2025\/07\/image-1024x553.jpeg 1024w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2025\/07\/image-300x162.jpeg 300w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2025\/07\/image-768x415.jpeg 768w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2025\/07\/image-18x10.jpeg 18w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2025\/07\/image.jpeg 1392w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p>A four-pole (4P) isolator switch is an electrical disconnect device that isolates four conductors simultaneously\u2014usually three live wires (R, Y, B) and one neutral. This type of isolator is designed for systems where it\u2019s essential to disconnect the neutral along with the phases, such as in TN-C-S earthing systems or solar installations.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u06cc\u06c1 \u062a\u06cc\u0646\u0648\u06ba \u0645\u0631\u0627\u062d\u0644 \u06a9\u06d2 \u0639\u0644\u0627\u0648\u06c1 \u0645\u06a9\u0645\u0644 \u0633\u0631\u06a9\u0679 \u062a\u0646\u06c1\u0627\u0626\u06cc \u06a9\u06d2 \u0644\u06cc\u06d2 \u0646\u06cc\u0648\u0679\u0631\u0644 \u06a9\u0648 \u0645\u0646\u0642\u0637\u0639 \u06a9\u0631\u062a\u0627 \u06c1\u06d2\u06d4<\/li>\n\n\n\n<li>\u06cc\u06c1 \u062f\u06cc\u06a9\u06be \u0628\u06be\u0627\u0644 \u06a9\u06d2 \u062f\u0648\u0631\u0627\u0646 \u063a\u06cc\u0631 \u062c\u0627\u0646\u0628\u062f\u0627\u0631 \u06a9\u06d2 \u0630\u0631\u06cc\u0639\u06d2 \u0648\u0627\u067e\u0633\u06cc \u06a9\u06d2 \u0628\u06c1\u0627\u0624 \u06a9\u0648 \u06cc\u0642\u06cc\u0646\u06cc \u0628\u0646\u0627 \u06a9\u0631 \u062d\u0641\u0627\u0638\u062a \u06a9\u0648 \u0628\u0691\u06be\u0627\u062a\u0627 \u06c1\u06d2\u06d4<\/li>\n\n\n\n<li>\u06cc\u06c1 \u0627\u06cc\u067e\u0644\u06cc \u06a9\u06cc\u0634\u0646\u0632 \u062c\u06cc\u0633\u06d2 \u0633\u0648\u0644\u0631\u060c \u062c\u0646\u0631\u06cc\u0679\u0631 \u06a9\u0646\u06a9\u0634\u0646\u060c \u06cc\u0627 \u0627\u062a\u0627\u0631 \u0686\u0691\u06be\u0627\u0624 \u0648\u0627\u0644\u06d2 \u0628\u0648\u062c\u06be \u0648\u0627\u0644\u06d2 \u0633\u0633\u0679\u0645\u0632 \u06a9\u06d2 \u0644\u06cc\u06d2 \u0636\u0631\u0648\u0631\u06cc \u06c1\u06d2\u06d4<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Comparing_3-Pole_and_4-Pole_Isolator_Switches\"><\/span><strong>3-\u067e\u0648\u0644 \u0627\u0648\u0631 4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686\u0632 \u06a9\u0627 \u0645\u0648\u0627\u0632\u0646\u06c1 \u06a9\u0631\u0646\u0627<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>\u0641\u06cc\u0686\u0631<\/strong><\/td><td><strong>3-\u0642\u0637\u0628 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686<\/strong><\/td><td><strong>4-\u0642\u0637\u0628 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686<\/strong><\/td><\/tr><tr><td>\u06a9\u0646\u0688\u06a9\u0679\u0631\u0632 \u06a9\u06cc \u062a\u0639\u062f\u0627\u062f<\/td><td>3 (\u0641\u06cc\u0632 R, Y, B)<\/td><td>4 (\u0641\u06cc\u0632 R, Y, B + \u0646\u06cc\u0648\u0679\u0631\u0644)<\/td><\/tr><tr><td>\u063a\u06cc\u0631 \u062c\u0627\u0646\u0628\u062f\u0627\u0631 \u062a\u0646\u06c1\u0627\u0626\u06cc<\/td><td>\u0634\u0627\u0645\u0644 \u0646\u06c1\u06cc\u06ba<\/td><td>\u0634\u0627\u0645\u0644<\/td><\/tr><tr><td>\u062f\u0631\u062e\u0648\u0627\u0633\u062a \u06a9\u0627 \u0627\u0633\u062a\u0639\u0645\u0627\u0644<\/td><td>\u0645\u0639\u06cc\u0627\u0631\u06cc 3 \u0641\u06cc\u0632 \u0628\u0648\u062c\u06be<\/td><td>\u0627\u06c1\u0645 \u0628\u0648\u062c\u06be\u060c \u0634\u0645\u0633\u06cc\u060c \u0627\u0648\u0631 \u062c\u0646\u0631\u06cc\u0679\u0631 \u06a9\u06d2 \u0646\u0638\u0627\u0645<\/td><\/tr><tr><td>\u0633\u06cc\u0641\u0679\u06cc \u0644\u06cc\u0648\u0644<\/td><td>\u062f\u0631\u0645\u06cc\u0627\u0646\u06c1<\/td><td>\u06c1\u0627\u0626\u06cc (\u0645\u06a9\u0645\u0644 \u0631\u0627\u0628\u0637\u06c1 \u0645\u0646\u0642\u0637\u0639)<\/td><\/tr><tr><td>\u062a\u0639\u0645\u06cc\u0644 \u06a9\u06cc \u0636\u0631\u0648\u0631\u062a<\/td><td>\u0628\u0646\u06cc\u0627\u062f\u06cc<\/td><td>\u0627\u06a9\u062b\u0631 \u06af\u0631\u0688 \u0633\u06d2 \u0645\u0646\u0633\u0644\u06a9 \u0627\u06cc\u067e\u0644\u06cc \u06a9\u06cc\u0634\u0646\u0632 \u06a9\u06d2 \u0644\u06cc\u06d2 \u062f\u0631\u06a9\u0627\u0631 \u06c1\u0648\u062a\u0627 \u06c1\u06d2\u06d4<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-style:normal;font-weight:600\"><span class=\"ez-toc-section\" id=\"How_to_Decide_Between_3-Pole_and_4-Pole_in_Real_Projects\"><\/span>How to Decide Between 3-Pole and 4-Pole in Real Projects<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The selection is usually based on whether the neutral must remain connected or must be isolated together with the live conductors.<\/p>\n\n\n\n<p>Choose a 3-pole isolator when the load is a standard three-phase motor or machine and neutral isolation is not required by the system design. This is common in motor control panels, pumps, compressors, and general industrial loads.<\/p>\n\n\n\n<p>Choose a 4-pole isolator when the neutral must also be disconnected for safety, maintenance, or compliance reasons. This is more common in generator-backed systems, solar installations, TT earthing systems, and circuits serving sensitive electronic equipment.<\/p>\n\n\n\n<p>As a practical rule, if the application involves source switching, shared neutral concerns, or a requirement for full isolation during maintenance, a 4-pole isolator is usually the safer option.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"When_to_Use_a_3-Pole_Isolator_Switch\"><\/span><strong>3-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0628 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u06cc\u06ba\u06d4<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u0627\u06cc\u06a9 3-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u0645\u0639\u06cc\u0627\u0631\u06cc \u062a\u06be\u0631\u06cc \u0641\u06cc\u0632 \u0633\u0633\u0679\u0645\u0632 \u06a9\u06d2 \u0644\u06cc\u06d2 \u0645\u062b\u0627\u0644\u06cc \u06c1\u06d2 \u062c\u0633 \u06a9\u0648 \u063a\u06cc\u0631 \u062c\u0627\u0646\u0628\u062f\u0627\u0631 \u062a\u0646\u06c1\u0627\u0626\u06cc \u06a9\u06cc \u0636\u0631\u0648\u0631\u062a \u0646\u06c1\u06cc\u06ba \u06c1\u06d2\u06d4 \u06cc\u06c1 \u0639\u0627\u0645 \u0637\u0648\u0631 \u067e\u0631 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u06cc\u0627 \u062c\u0627\u062a\u0627 \u06c1\u06d2:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/how-to-select-3-phase-circuit-breaker-for-industrial-motor\/\">\u0635\u0646\u0639\u062a\u06cc \u0645\u0648\u0679\u0631\u0632<\/a><\/li>\n\n\n\n<li>HVAC \u0633\u0633\u0679\u0645\u0632<\/li>\n\n\n\n<li>\u067e\u0627\u0646\u06cc \u06a9\u06d2 \u067e\u0645\u067e<\/li>\n\n\n\n<li>\u0645\u0634\u06cc\u0646\u06cc \u0627\u0648\u0632\u0627\u0631<\/li>\n<\/ul>\n\n\n\n<p> As a standard AC isolator switch for three-phase loads, the 3-pole variant is cost-effective and widely available. These switches are sufficient when the neutral is grounded elsewhere or doesn\u2019t carry current under fault conditions.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/www.tosunlux.eu\/ur\/products\/dc-isolating-switch-3\/\" target=\"_blank\" rel=\" noreferrer noopener\"><img decoding=\"async\" width=\"255\" height=\"355\" src=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2025\/07\/1753166019295.png\" alt=\"\u0627\u067e\u0646\u06d2 \u067e\u06cc \u0648\u06cc \u0633\u0633\u0679\u0645 \u06a9\u06d2 \u0644\u06cc\u06d2 \u0628\u06c1\u062a\u0631\u06cc\u0646 \u0688\u06cc \u0633\u06cc \u0622\u0626\u06cc\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0627 \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0631\u06cc\u06ba\u06d4\" class=\"wp-image-14186\" style=\"width:200px;height:auto\" srcset=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2025\/07\/1753166019295.png 255w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2025\/07\/1753166019295-215x300.png 215w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2025\/07\/1753166019295-9x12.png 9w\" sizes=\"(max-width: 255px) 100vw, 255px\" \/><\/a><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"When_to_Use_a_4-Pole_Isolator_Switch\"><\/span><strong>4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0628 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u06cc\u06ba\u06d4<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u062c\u0628 \u063a\u06cc\u0631 \u062c\u0627\u0646\u0628\u062f\u0627\u0631 \u0631\u0627\u0628\u0637\u06c1 \u0645\u0646\u0642\u0637\u0639 \u06a9\u0631\u0646\u0627 \u0636\u0631\u0648\u0631\u06cc \u06c1\u0648 \u062a\u0648 4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0627 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u06cc\u06ba\u06d4 \u0627\u0633 \u0645\u06cc\u06ba \u0634\u0627\u0645\u0644 \u06c1\u06cc\u06ba:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solar_PV_Systems\"><\/span><strong>\u0633\u0648\u0644\u0631 \u067e\u06cc \u0648\u06cc \u0633\u0633\u0679\u0645\u0632<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Solar PV Systems: A reliable isolator switch for solar panel installations must isolate both DC and AC sides, including the neutral, for safe maintenance.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Generator_Systems\"><\/span><strong>\u062c\u0646\u0631\u06cc\u0679\u0631 \u0633\u0633\u0679\u0645\u0632<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>When switching between the grid <span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\">\u0627\u0648\u0631<a href=\"https:\/\/www.tosunlux.eu\/ur\/changeover-switch-supplier\/\" target=\"_blank\">\u00a0generator<\/a><\/span>, to prevent back-feed or a floating neutral.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sensitive_Loads\"><\/span><strong>Sensitive Loads<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0688\u06cc\u0679\u0627 \u0633\u06cc\u0646\u0679\u0631\u0632 \u06cc\u0627 \u0637\u0628\u06cc \u0633\u06c1\u0648\u0644\u06cc\u0627\u062a \u0645\u06cc\u06ba\u060c \u063a\u06cc\u0631 \u062c\u0627\u0646\u0628\u062f\u0627\u0631 \u0627\u062a\u0627\u0631 \u0686\u0691\u06be\u0627\u0624 \u0633\u0627\u0645\u0627\u0646 \u06a9\u0648 \u0646\u0642\u0635\u0627\u0646 \u067e\u06c1\u0646\u0686\u0627 \u0633\u06a9\u062a\u0627 \u06c1\u06d2\u06d4<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"TT_or_TN-C-S_Systems\"><\/span><strong>TT or TN-C-S Systems<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u062c\u06c1\u0627\u06ba \u062a\u0645\u0627\u0645 \u06a9\u0646\u0688\u06a9\u0679\u0631\u0632 \u06a9\u0648 \u062a\u0648\u0691\u0646\u0627\u060c \u0628\u0634\u0645\u0648\u0644 \u0646\u06cc\u0648\u0679\u0631\u0644\u060c \u062a\u0639\u0645\u06cc\u0644 \u06a9\u06d2 \u0644\u06cc\u06d2 \u0636\u0631\u0648\u0631\u06cc \u06c1\u06d2\u06d4<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4-Pole_Isolator_Switch_Wiring_Diagram_How_to_Connect\"><\/span><strong>4-Pole Isolator Switch Wiring Diagram: How to Connect<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A 4-pole isolator switch <a href=\"https:\/\/www.tosunlux.eu\/ur\/dc-isolating-switch\/\">wiring diagram<\/a> typically includes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u062a\u06be\u0631\u06cc \u0641\u06cc\u0632 \u0627\u0646 \u067e\u0679 (R, Y, B)<\/strong><\/li>\n\n\n\n<li><strong>\u063a\u06cc\u0631 \u062c\u0627\u0646\u0628\u062f\u0627\u0631 \u0627\u0646 \u067e\u0679 (N)<\/strong><\/li>\n\n\n\n<li><strong>\u0622\u0624\u0679 \u06af\u0648\u0626\u0646\u06af \u0644\u0648\u0688 \u0679\u0631\u0645\u06cc\u0646\u0644\u0632 (\u0627\u0646 \u0644\u0627\u0626\u0646 \u0645\u0646\u0633\u0644\u06a9)<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\u06c1\u0631 \u0642\u0637\u0628 \u0627\u06cc\u06a9 \u06a9\u0646\u0688\u06a9\u0679\u0631 \u0633\u06d2 \u0645\u0633\u0627\u0648\u06cc \u06c1\u06d2\u060c \u0627\u0648\u0631 \u062a\u0645\u0627\u0645 \u06a9\u06be\u0645\u0628\u06d2 \u0645\u06cc\u06a9\u0627\u0646\u06a9\u06cc \u0637\u0648\u0631 \u067e\u0631 \u0627\u06cc\u06a9 \u062f\u0648\u0633\u0631\u06d2 \u06a9\u06d2 \u0633\u0627\u062a\u06be \u06a9\u0627\u0645 \u06a9\u0631\u0646\u06d2 \u06a9\u06d2 \u0644\u06cc\u06d2 \u062c\u0691\u06d2 \u06c1\u0648\u0626\u06d2 \u06c1\u06cc\u06ba\u06d4 \u062c\u0628 \u0633\u0648\u0626\u0686 \u0622\u0641 \u06c1\u0648 \u062c\u0627\u062a\u0627 \u06c1\u06d2\u060c \u062a\u0648 \u062a\u0645\u0627\u0645 \u0686\u0627\u0631 \u0644\u0627\u0626\u0646\u06cc\u06ba \u062c\u0633\u0645\u0627\u0646\u06cc \u0637\u0648\u0631 \u067e\u0631 \u0627\u0644\u06af \u06c1\u0648 \u062c\u0627\u062a\u06cc \u06c1\u06cc\u06ba\u060c \u062c\u0633 \u0633\u06d2 \u0628\u0631\u0627\u06c1 \u0631\u0627\u0633\u062a \u0631\u0627\u0628\u0637\u06d2 \u06a9\u06d2 \u062e\u0637\u0631\u0627\u062a \u062e\u062a\u0645 \u06c1\u0648 \u062c\u0627\u062a\u06d2 \u06c1\u06cc\u06ba\u06d4 \u0648\u0627\u0626\u0631\u0646\u06af \u06a9\u0631\u062a\u06d2 \u0648\u0642\u062a \u06c1\u0645\u06cc\u0634\u06c1 \u0627\u0646\u0633\u0679\u0627\u0644\u06cc\u0634\u0646 \u0645\u06cc\u0646\u0648\u0626\u0644 \u0627\u0648\u0631 \u0644\u0648\u06a9\u0644 \u06a9\u0648\u0688\u0632 \u06a9\u0627 \u062d\u0648\u0627\u0644\u06c1 \u062f\u06cc\u06ba\u06d4<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Benefits_of_Using_a_4-Pole_Isolator_Switch\"><\/span><strong>4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u0646\u06d2 \u06a9\u06d2 \u0641\u0648\u0627\u0626\u062f<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Switching to a four-pole isolator provides benefits beyond just compliance:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u0628\u06c1\u062a\u0631 \u062d\u0641\u0627\u0638\u062a:<\/strong> \u0628\u0642\u0627\u06cc\u0627 \u06cc\u0627 \u0631\u0633\u0627\u0648 \u06a9\u0631\u0646\u0679 \u06a9\u0648 \u0646\u06cc\u0648\u0679\u0631\u0644 \u06a9\u06d2 \u0630\u0631\u06cc\u0639\u06d2 \u0628\u06c1\u0646\u06d2 \u0633\u06d2 \u0631\u0648\u06a9\u062a\u0627 \u06c1\u06d2\u06d4<\/li>\n\n\n\n<li><strong>\u0628\u06c1\u062a\u0631 \u062a\u062d\u0641\u0638:<\/strong> \u063a\u06cc\u0631 \u0645\u0646\u0642\u0637\u0639 \u06c1\u0648\u0646\u06d2 \u06a9\u06cc \u0635\u0648\u0631\u062a \u0645\u06cc\u06ba \u063a\u06cc\u0631 \u062c\u0627\u0646\u0628\u062f\u0627\u0631 \u0641\u0627\u0644\u0679\u0633 \u0633\u0627\u0645\u0627\u0646 \u06a9\u0648 \u0634\u062f\u06cc\u062f \u0646\u0642\u0635\u0627\u0646 \u067e\u06c1\u0646\u0686\u0627 \u0633\u06a9\u062a\u06d2 \u06c1\u06cc\u06ba\u06d4<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.tosunlux.eu\/ur\/residual-current-circuit-breaker\/\">\u0633\u0633\u0679\u0645 \u06a9\u06cc \u0645\u0637\u0627\u0628\u0642\u062a<\/a>:<\/strong> TN-CS \u0627\u0648\u0631 TT \u0627\u0631\u062a\u06be\u0646\u06af \u0633\u0633\u0679\u0645 \u06a9\u06d2 \u0633\u0627\u062a\u06be \u0627\u0686\u06be\u06cc \u0637\u0631\u062d \u06a9\u0627\u0645 \u06a9\u0631\u062a\u0627 \u06c1\u06d2 \u062c\u06c1\u0627\u06ba \u0645\u06a9\u0645\u0644 \u0631\u0627\u0628\u0637\u06c1 \u0645\u0646\u0642\u0637\u0639 \u06a9\u0631\u0646\u0627 \u0636\u0631\u0648\u0631\u06cc \u06c1\u06d2\u06d4<\/li>\n\n\n\n<li><strong>\u0627\u0633\u062a\u0639\u062f\u0627\u062f:<\/strong> \u0627\u06cc\u067e\u0644\u06cc \u06a9\u06cc\u0634\u0646\u0632 \u06a9\u06cc \u0627\u06cc\u06a9 \u0631\u06cc\u0646\u062c \u06a9\u06d2 \u0644\u06cc\u06d2 \u0645\u0648\u0632\u0648\u06ba \u06c1\u06d2\u060c \u0628\u0634\u0645\u0648\u0644 \u0628\u06cc\u06a9 \u0627\u067e \u062c\u0646\u0631\u06cc\u0679\u0631\u060c \u0634\u0645\u0633\u06cc\u060c <a href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/the-comprehensive-guide-to-electrical-car-charge\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u0627\u06cc \u0648\u06cc \u0686\u0627\u0631\u062c\u0646\u06af<\/a> \u0627\u0633\u0679\u06cc\u0634\u0646\u060c \u0627\u0648\u0631 \u0645\u0632\u06cc\u062f.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Mistakes_to_Avoid_When_Choosing_Isolators\"><\/span><strong>Isolators \u06a9\u0627 \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0631\u062a\u06d2 \u0648\u0642\u062a \u0633\u06d2 \u0628\u0686\u0646\u06d2 \u06a9\u06d2 \u0644\u06cc\u06d2 \u0639\u0627\u0645 \u063a\u0644\u0637\u06cc\u0627\u06ba<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The most common isolator selection mistake is focusing only on the current rating while ignoring the neutral and the actual switching scenario.<\/p>\n\n\n\n<p>Another mistake is using a 3-pole isolator in applications where full neutral isolation is expected, such as generator supply switching or certain PV and TT system layouts. This can leave part of the circuit still referenced and create maintenance risk.<\/p>\n\n\n\n<p>Buyers should also verify voltage class, utilization category, enclosure requirement, and installation environment. Outdoor or rooftop installations may require different protection levels from indoor panel applications.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u063a\u06cc\u0631 \u062c\u0627\u0646\u0628\u062f\u0627\u0631 \u06a9\u0648 \u0646\u0638\u0631 \u0627\u0646\u062f\u0627\u0632 \u06a9\u0631\u0646\u0627:<\/strong> \u0645\u0634\u062a\u0631\u06a9\u06c1 \u0646\u06cc\u0648\u0679\u0631\u0644\u0632 \u0648\u0627\u0644\u06d2 \u0633\u0633\u0679\u0645\u0632 \u0645\u06cc\u06ba\u060c \u0635\u0631\u0641 3-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u06a9\u0627 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u0633\u0631\u06a9\u0679 \u06a9\u0648 \u062c\u0632\u0648\u06cc \u0637\u0648\u0631 \u067e\u0631 \u0645\u062a\u062d\u0631\u06a9 \u0686\u06be\u0648\u0691 \u0633\u06a9\u062a\u0627 \u06c1\u06d2\u06d4<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/understanding-the-different-types-of-mccb\/\">Incorrect Rating<\/a>:<\/strong> \u06c1\u0645\u06cc\u0634\u06c1 \u0627\u0633 \u0628\u0627\u062a \u06a9\u0648 \u06cc\u0642\u06cc\u0646\u06cc \u0628\u0646\u0627\u0626\u06cc\u06ba \u06a9\u06c1 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0631\u0646\u0679 \u0627\u0648\u0631 \u0648\u0648\u0644\u0679\u06cc\u062c \u06a9\u06cc \u062f\u0631\u062c\u06c1 \u0628\u0646\u062f\u06cc \u0622\u067e \u06a9\u06cc \u062f\u0631\u062e\u0648\u0627\u0633\u062a \u0633\u06d2 \u0645\u0644\u062a\u06cc \u06c1\u06d2\u06d4<\/li>\n\n\n\n<li><strong>\u0646\u0627\u0642\u0635 \u0645\u0639\u06cc\u0627\u0631:<\/strong> \u063a\u06cc\u0631 \u062a\u0635\u062f\u06cc\u0642 \u0634\u062f\u06c1 \u0633\u0648\u0626\u0686\u0632 \u0633\u06d2 \u067e\u0631\u06c1\u06cc\u0632 \u06a9\u0631\u06cc\u06ba\u06d4 \u0645\u0646\u0627\u0633\u0628 \u0633\u0631\u0679\u06cc\u0641\u06cc\u06a9\u06cc\u0634\u0646 \u06a9\u06d2 \u0628\u063a\u06cc\u0631 \u0633\u0648\u0626\u0686 \u0633\u06d2 \u0628\u062c\u0644\u06cc \u06a9\u06cc \u062e\u0631\u0627\u0628\u06cc \u06cc\u0627 \u0622\u06af \u0644\u06af\u0646\u06d2 \u06a9\u0627 \u062e\u0637\u0631\u06c1 \u06c1\u0648\u062a\u0627 \u06c1\u06d2\u06d4<\/li>\n<\/ul>\n\n\n\n<p><strong>TOSUNlux \u0622\u067e \u06a9\u0648 \u0635\u062d\u06cc\u062d \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0631\u0646\u06d2 \u0645\u06cc\u06ba \u06a9\u0633 \u0637\u0631\u062d \u0645\u062f\u062f \u06a9\u0631\u062a\u0627 \u06c1\u06d2\u06d4<\/strong><\/p>\n\n\n\n<p>TOSUNlux \u06a9\u06d2 \u0633\u0627\u062a\u06be \u0627\u067e\u0646\u0627 \u062d\u0644 \u062a\u0644\u0627\u0634 \u06a9\u0631\u06cc\u06ba\u06d4 \u0686\u0627\u06c1\u06d2 \u0622\u067e \u06a9\u0627 \u067e\u0631\u0648\u062c\u06cc\u06a9\u0679 \u0627\u06cc\u06a9 \u0645\u0636\u0628\u0648\u0637 3-\u067e\u0648\u0644 \u0622\u0626\u06cc\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0627 \u0645\u0637\u0627\u0644\u0628\u06c1 \u06a9\u0631\u06d2 \u06cc\u0627 4-\u0642\u0637\u0628 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u06cc \u0628\u06c1\u062a\u0631 \u062d\u0641\u0627\u0638\u062a \u06a9\u0627\u060c TOSUNlux \u0627\u06cc\u06a9 \u0645\u06a9\u0645\u0644 \u0637\u0648\u0631 \u067e\u0631 \u062a\u0635\u062f\u06cc\u0642 \u0634\u062f\u06c1\u060c \u0627\u0639\u0644\u06cc \u06a9\u0627\u0631\u06a9\u0631\u062f\u06af\u06cc \u06a9\u0627 \u062d\u0644 \u067e\u06cc\u0634 \u06a9\u0631\u062a\u0627 \u06c1\u06d2\u06d4 30 \u0633\u0627\u0644 \u0633\u06d2 \u0632\u06cc\u0627\u062f\u06c1 \u0639\u0627\u0644\u0645\u06cc \u0645\u06c1\u0627\u0631\u062a \u06a9\u06d2 \u0633\u0627\u062a\u06be\u060c TOSUNlux \u0642\u0627\u0628\u0644 \u0627\u0639\u062a\u0645\u0627\u062f \u0622\u0626\u06cc\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0648 \u06cc\u0642\u06cc\u0646\u06cc \u0628\u0646\u0627\u062a\u0627 \u06c1\u06d2:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0637\u0627\u0642\u062a <a href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/what-is-a-distribution-board-and-how-does-it-work\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u062a\u0642\u0633\u06cc\u0645 \u0628\u0648\u0631\u0688\u0632<\/a><\/li>\n\n\n\n<li>\u0633\u0648\u0644\u0631 \u067e\u06cc \u0648\u06cc \u0633\u0633\u0679\u0645<\/li>\n\n\n\n<li>\u0635\u0646\u0639\u062a\u06cc \u0622\u0679\u0648\u0645\u06cc\u0634\u0646<\/li>\n\n\n\n<li>\u0632\u0631\u0639\u06cc \u0627\u06cc\u067e\u0644\u06cc \u06a9\u06cc\u0634\u0646\u0632<\/li>\n<\/ul>\n\n\n\n<p>\u0622\u0626\u06cc\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686\u0632 \u06a9\u06d2 \u0628\u0627\u0631\u06d2 \u0645\u06cc\u06ba \u06cc\u06c1\u0627\u06ba \u0645\u0632\u06cc\u062f \u062f\u0631\u06cc\u0627\u0641\u062a \u06a9\u0631\u06cc\u06ba:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.tosunlux.eu\/ur\/products\/dc-isolating-switch-3\/\" target=\"_blank\" rel=\"noreferrer noopener\">DC \u0627\u0644\u06af \u062a\u06be\u0644\u06af \u0633\u0648\u0626\u0686 \u067e\u0631\u0648\u0688\u06a9\u0679 \u06a9\u0627 \u0635\u0641\u062d\u06c1<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.tosunlux.eu\/ur\/category\/isolation-switch\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u0622\u0626\u0633\u0648\u0644\u06cc\u0634\u0646 \u0633\u0648\u0626\u0686 \u06a9\u06cc\u0679\u06cc\u06af\u0631\u06cc<\/a><\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-25\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/www.tosunlux.eu\/ur\/contact\/\" style=\"border-radius:50px;background-color:#00b1cd\" target=\"_blank\" rel=\"noreferrer noopener\">\u0627\u06cc\u06a9 \u0627\u0642\u062a\u0628\u0627\u0633 \u062d\u0627\u0635\u0644 \u06a9\u0631\u06cc\u06ba\u06d4<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQ\"><\/span><strong>\u0627\u06a9\u062b\u0631 \u067e\u0648\u0686\u06be\u06d2 \u06af\u0626\u06d2 \u0633\u0648\u0627\u0644\u0627\u062a<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_a_4-pole_isolator_switch\"><\/span><strong>4-\u0642\u0637\u0628 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u06cc\u0627 \u06c1\u06d2\u061f<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>A 4-pole isolator is an electrical switch that disconnects three-phase lines and the neutral wire simultaneously for complete isolation and safety.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"When_should_I_use_a_4-pole_isolator_switch\"><\/span><strong>\u0645\u062c\u06be\u06d2 4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0628 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u0646\u0627 \u0686\u0627\u06c1\u06cc\u06d2\u061f<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0627\u0633\u06d2 \u0627\u0633\u062a\u0639\u0645\u0627\u0644 \u06a9\u0631\u06cc\u06ba \u062c\u0628 \u063a\u06cc\u0631 \u062c\u0627\u0646\u0628\u062f\u0627\u0631\u0627\u0646\u06c1 \u0631\u0627\u0628\u0637\u06c1 \u0645\u0646\u0642\u0637\u0639 \u06c1\u0648\u060c \u062c\u06cc\u0633\u06d2 \u062c\u0646\u0631\u06cc\u0679\u0631 \u0633\u0633\u0679\u0645\u060c \u0633\u0648\u0644\u0631 \u067e\u06cc \u0648\u06cc \u0633\u06cc\u0679 \u0627\u067e\u060c \u06cc\u0627 \u062d\u0633\u0627\u0633 \u0622\u0644\u0627\u062a \u06a9\u06d2 \u0633\u0631\u06a9\u0679\u0633 \u0645\u06cc\u06ba\u06d4<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Is_a_3-pole_isolator_switch_enough_for_most_industrial_applications\"><\/span><strong>\u06a9\u06cc\u0627 \u0632\u06cc\u0627\u062f\u06c1 \u062a\u0631 \u0635\u0646\u0639\u062a\u06cc \u0627\u06cc\u067e\u0644\u06cc \u06a9\u06cc\u0634\u0646\u0632 \u06a9\u06d2 \u0644\u06cc\u06d2 3-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u06a9\u0627\u0641\u06cc \u06c1\u06d2\u061f<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Yes, if neutral isolation is not critical, a 3-pole isolator switch is commonly used in motors and HVAC systems.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_does_a_4-pole_isolator_improve_safety\"><\/span><strong>4 \u0642\u0637\u0628\u06cc \u0627\u0644\u06af \u062a\u06be\u0644\u06af \u062d\u0641\u0627\u0638\u062a \u06a9\u0648 \u06a9\u06cc\u0633\u06d2 \u0628\u06c1\u062a\u0631 \u0628\u0646\u0627\u062a\u0627 \u06c1\u06d2\u061f<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u06cc\u06c1 \u0646\u06cc\u0648\u0679\u0631\u0644 \u06a9\u0648 \u0645\u0646\u0642\u0637\u0639 \u06a9\u0631\u062a\u0627 \u06c1\u06d2\u060c \u063a\u06cc\u0631 \u0645\u062a\u0648\u0642\u0639 \u06a9\u0631\u0646\u0679 \u0644\u0648\u067e\u0633 \u06a9\u0648 \u0631\u0648\u06a9\u062a\u0627 \u06c1\u06d2\u060c \u062c\u0633 \u0633\u06d2 \u0628\u062c\u0644\u06cc \u06a9\u06d2 \u062c\u06be\u0679\u06a9\u06d2 \u06a9\u0627 \u062e\u0637\u0631\u06c1 \u0627\u0648\u0631 \u0622\u0644\u0627\u062a \u06a9\u06cc \u062e\u0631\u0627\u0628\u06cc \u06a9\u0645 \u06c1\u0648\u062a\u06cc \u06c1\u06d2\u06d4<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Where_can_I_find_a_4-pole_isolator_switch_wiring_diagram\"><\/span><strong>\u0645\u062c\u06be\u06d2 4-\u067e\u0648\u0644 \u0622\u0626\u0633\u0648\u0644\u06cc\u0679\u0631 \u0633\u0648\u0626\u0686 \u0648\u0627\u0626\u0631\u0646\u06af \u0688\u0627\u06cc\u0627\u06af\u0631\u0627\u0645 \u06a9\u06c1\u0627\u06ba \u0633\u06d2 \u0645\u0644 \u0633\u06a9\u062a\u0627 \u06c1\u06d2\u061f<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0632\u06cc\u0627\u062f\u06c1 \u062a\u0631 \u0645\u06cc\u0646\u0648\u0641\u06cc\u06a9\u0686\u0631\u0631\u0632 \u0627\u0633\u06d2 \u067e\u0631\u0648\u0688\u06a9\u0679 \u0645\u06cc\u0646\u0648\u0626\u0644 \u06a9\u06d2 \u0633\u0627\u062a\u06be \u0641\u0631\u0627\u06c1\u0645 \u06a9\u0631\u062a\u06d2 \u06c1\u06cc\u06ba\u06d4 \u0622\u067e \u0635\u0646\u0639\u062a\u06cc \u0641\u0648\u0631\u0645\u0632 \u067e\u0631 \u06cc\u0627 TOSUNlux \u0648\u0633\u0627\u0626\u0644 \u06a9\u06d2 \u0630\u0631\u06cc\u0639\u06d2 \u0646\u0645\u0648\u0646\u06c1 \u0644\u06d2 \u0622\u0624\u0679 \u0628\u06be\u06cc \u062f\u06cc\u06a9\u06be \u0633\u06a9\u062a\u06d2 \u06c1\u06cc\u06ba\u06d4<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_difference_between_a_3-pole_and_a_4-pole_isolator_switch\"><\/span><strong>What is the difference between a 3-pole and a 4-pole isolator switch?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>A 3-pole isolator disconnects only the three-phase conductors (R, Y, B), while a 4-pole isolator also disconnects the neutral wire, providing complete circuit isolation. The 4-pole version is required in solar PV systems, generator setups, and TN-C-S earthing systems.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Do_I_need_a_4-pole_isolator_for_solar_panels\"><\/span><strong>Do I need a 4-pole isolator for solar panels?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Yes, for grid-tied solar PV installations, a 4-pole isolator switch is typically required to disconnect both the phase and neutral conductors during maintenance, ensuring full isolation from the grid.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_I_use_a_3-pole_isolator_switch_with_a_generator\"><\/span><strong>Can I use a 3-pole isolator switch with a generator?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>A 3-pole isolator can be used with a generator if the neutral is solidly grounded.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><strong>\u0646\u062a\u06cc\u062c\u06c1<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Choosing the right isolator switch isn\u2019t just about compliance \u2014 it\u2019s about ensuring the safety and reliability of your entire electrical system. A 3-pole isolator switch serves well for basic three-phase applications, but a 4-pole isolator takes safety to the next level, making it ideal for critical or outdoor applications.<\/p>\n\n\n\n<p>\u06cc\u0627\u062f \u0631\u06a9\u06be\u06cc\u06ba\u060c <a href=\"https:\/\/www.tosunlux.eu\/ur\" target=\"_blank\" rel=\"noreferrer noopener\">TOSUNlux <\/a>\u062f\u0646\u06cc\u0627 \u0628\u06be\u0631 \u0645\u06cc\u06ba \u0622\u067e \u06a9\u06cc \u0636\u0631\u0648\u0631\u06cc\u0627\u062a \u06a9\u0648 \u067e\u0648\u0631\u0627 \u06a9\u0631\u0646\u06d2 \u06a9\u06d2 \u0644\u06cc\u06d2 \u062a\u06cc\u0627\u0631 \u06c1\u06d2\u06d4 \u0627\u06cc\u0633\u06d2 \u0645\u0635\u062f\u0642\u06c1 \u062d\u0644 \u062a\u0644\u0627\u0634 \u06a9\u0631\u06cc\u06ba \u062c\u0648 \u0622\u067e \u06a9\u06d2 \u0633\u0633\u0679\u0645 \u06a9\u0648 \u0645\u062d\u0641\u0648\u0638 \u0631\u06a9\u06be\u062a\u06d2 \u06c1\u06cc\u06ba\u060c \u0686\u0627\u06c1\u06d2 \u0622\u067e \u0635\u0646\u0639\u062a\u06cc \u0645\u0634\u06cc\u0646\u0631\u06cc \u06cc\u0627 \u0628\u06cc\u0631\u0648\u0646\u06cc \u062a\u0646\u0635\u06cc\u0628\u0627\u062a \u067e\u0631 \u06a9\u0627\u0645 \u06a9\u0631 \u0631\u06c1\u06d2 \u06c1\u0648\u06ba\u06d4<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>In a three-phase system, the choice between a 3-pole and a 4-pole isolator switch depends on one key question: Does the neutral also need to be disconnected? A 3-pole isolator disconnects the three live conductors only. A 4-pole isolator disconnects the three phases plus the neutral, which is often preferred in generator connections, PV systems, TT earthing arrangements, and installations with sensitive electronic loads. This guide explains the practical difference when each option is used, what mistakes to avoid, and how to make a safer selection for industrial and commercial projects. Hero Product Highlight Electrical Supply Wholesaler Discover a full range of electrical products from a trusted electrical supply wholesaler. TOSUNlux offers circuit breakers, contactors, switches, and more for global markets. View Product Understanding the Basics: What Is a 4-Pole Isolator Switch? A four-pole (4P) isolator switch is an electrical disconnect device that isolates four conductors simultaneously\u2014usually three live wires (R, Y, B) and one neutral. This type of isolator is designed for systems where it\u2019s essential to disconnect the neutral along with the phases, such as in TN-C-S earthing systems or solar installations. Comparing 3-Pole and 4-Pole Isolator Switches Feature 3-Pole Isolator Switch 4-Pole Isolator Switch Number of Conductors 3 (Phases R, Y, B) 4 (Phases R, Y, B + Neutral) Neutral Isolation Not Included Included Application Use Standard 3-phase loads Critical loads, solar, and generator systems Safety Level Medium High (complete disconnection) Compliance Requirement Basic Often required for grid-tied applications How to Decide Between 3-Pole and 4-Pole in Real Projects The selection is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":14271,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-14248","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>3-Pole vs 4-Pole Isolator Switch: Differences,Wiring &amp; When to Use<\/title>\n<meta name=\"description\" content=\"What&#039;s the difference between 3-pole and 4-pole isolator switches? Learn when each is required, the basics of wiring diagrams, and how to choose the right one for solar generators and industrial systems.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.tosunlux.eu\/ur\/blog\/3-pole-vs-4-pole-isolator-switch-when-how-to-use\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"3-Pole vs 4-Pole Isolator Switch: Differences,Wiring &amp; When to Use\" \/>\n<meta property=\"og:description\" content=\"What&#039;s the difference between 3-pole and 4-pole isolator switches? 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