{"product_id":"industrial-b-521l-kt-s6-ac-trip-unit","title":"Industrial B-521L-KT-S6 AC Trip Unit","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"270\" data-end=\"286\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"287\" data-end=\"1019\"\u003eThe Utility Relay Company B-521L-KT-S6 AC Trip Unit is designed to provide electronic protection and control functions for low-voltage circuit breaker systems in industrial power distribution applications. Commonly installed in switchgear assemblies and protective relay systems, the Utility Relay Company B-521L-KT-S6 AC Trip Unit with Quick Trip monitors fault conditions and initiates rapid breaker operation to help safeguard electrical equipment and maintain system reliability. Maintenance teams, electricians, and system integrators use the Utility Relay Company B-521L-KT-S6 AC Trip Unit for replacement, retrofit, and continued support of existing protection systems to minimize downtime and maintain operational integrity.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"1021\" data-end=\"1038\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"1039\" data-end=\"1485\"\u003eThe Utility Relay Company B-521L-KT-S6 AC Trip Unit is commonly used in switchgear assemblies, motor control centers, and industrial electrical distribution systems requiring electronic overcurrent protection and quick trip capabilities. Preowned units are often sourced to maintain legacy equipment, support system repairs, and ensure dependable protection of critical electrical assets using the Utility Relay Company B-521L-KT-S6 AC Trip Unit.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1487\" data-end=\"1516\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1517\" data-end=\"2238\"\u003e• Manufacturer Part Number (MPN): B-521L-KT-S6\u003cbr data-start=\"1563\" data-end=\"1566\"\u003e• Associated Part Number: H490F525\u003cbr data-start=\"1600\" data-end=\"1603\"\u003e• Brand: Utility Relay Company\u003cbr data-start=\"1633\" data-end=\"1636\"\u003e• Product Type: AC Trip Unit\u003cbr data-start=\"1664\" data-end=\"1667\"\u003e• Condition: Preowned\u003cbr data-start=\"1688\" data-end=\"1691\"\u003e• Series: AC-PRO\u003cbr data-start=\"1707\" data-end=\"1710\"\u003e• Device Type: Electronic trip unit\u003cbr data-start=\"1745\" data-end=\"1748\"\u003e• Trip Feature: Quick Trip functionality\u003cbr data-start=\"1788\" data-end=\"1791\"\u003e• Primary Function: Circuit breaker protection and control\u003cbr data-start=\"1849\" data-end=\"1852\"\u003e• Compatible Equipment: AC-PRO circuit breaker systems\u003cbr data-start=\"1906\" data-end=\"1909\"\u003e• Protection Applications: Overcurrent monitoring and trip initiation\u003cbr data-start=\"1978\" data-end=\"1981\"\u003e• Installation Environment: Switchgear and power distribution equipment\u003cbr data-start=\"2052\" data-end=\"2055\"\u003e• Mounting Type: Internal breaker assembly installation\u003cbr data-start=\"2110\" data-end=\"2113\"\u003e• Typical Applications: Industrial and commercial electrical systems\u003cbr data-start=\"2181\" data-end=\"2184\"\u003e• Service Use: Replacement and retrofit applications\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2240\" data-end=\"2264\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2265\" data-end=\"2425\"\u003e• Utility Relay Company B-521L-KT AC Trip Unit\u003cbr data-start=\"2311\" data-end=\"2314\"\u003e• Utility Relay Company B-521L-KT-S5 AC Trip Unit\u003cbr data-start=\"2363\" data-end=\"2366\"\u003e• Utility Relay Company \u003ca href=\"https:\/\/plgautomation.com\/products\/urc-utility-relay-company-ac-pro-trip-unit-microcontroller-b-501qt?_pos=1\u0026amp;_sid=435b018b1\u0026amp;_ss=r\" title=\"B-501QT\"\u003eB-501QT\u003c\/a\u003e Trip Unit Microcontroller\u003c\/p\u003e","brand":"Utility","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51729162797358,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_c7107f0c-350f-41da-924c-92a0b0a5f52d.jpg?v=1770589093","url":"https:\/\/plgautomation.com\/products\/industrial-b-521l-kt-s6-ac-trip-unit","provider":"PLG Automation ","version":"1.0","type":"link"}