{"product_id":"toshiba-corporation-rc81a-ground-fault-module","title":"Toshiba Corporation RC81A Ground Fault Module","description":"\u003cdiv class=\"\" data-turn-id-container=\"request-6a5626e7-be3c-83ec-99e0-9f92965fbdf8-4\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a5626e7-be3c-83ec-99e0-9f92965fbdf8-4\" data-turn-id-container=\"request-6a5626e7-be3c-83ec-99e0-9f92965fbdf8-4\" data-testid=\"conversation-turn-100\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-15 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"f41b41df-76e1-4998-9f69-e5b8260ace76\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"18\" data-end=\"679\"\u003eThe Toshiba RC81A Ground Fault Module is used with Toshiba RC800 and RC820 Type 2E motor protection relays to provide zero-sequence ground fault detection for three-phase motor control systems. Commonly installed in motor control centers (MCCs), pump stations, compressors, conveyor systems, mining equipment, water and wastewater treatment facilities, and industrial process machinery requiring adjustable ground fault protection. Maintenance teams, OEMs, and \u003ca href=\"https:\/\/plgautomation.com\/collections\/hmi-operator-interfaces\"\u003esystem integrators\u003c\/a\u003e use this module for replacement of failed ground fault modules, motor protection upgrades, preventive maintenance, and control panel retrofits. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"681\" data-end=\"698\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"700\" data-end=\"1082\"\u003eThe Toshiba RC81A is widely used in industrial motor starters, conveyor systems, pumping stations, compressors, HVAC equipment, mining operations, chemical processing plants, and factory automation systems where zero-sequence ground fault monitoring protects motors and electrical equipment from insulation failures and ground fault conditions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1084\" data-end=\"1113\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1115\" data-end=\"1892\"\u003e• Manufacturer Part Number (MPN): RC81A\u003cbr data-start=\"1154\" data-end=\"1157\"\u003e• Brand: Toshiba\u003cbr data-start=\"1173\" data-end=\"1176\"\u003e• Product Type: Ground Fault Module\u003cbr data-start=\"1211\" data-end=\"1214\"\u003e• Compatible Relay Series: Toshiba RC800 \/ RC820 Type 2E Motor Protection Relays\u003cbr data-start=\"1294\" data-end=\"1297\"\u003e• Protection Function: Zero-Sequence Ground Fault Detection\u003cbr data-start=\"1356\" data-end=\"1359\"\u003e• Ground Fault Current Setting: 4–12 A (ZCT Primary)\u003cbr data-start=\"1411\" data-end=\"1414\"\u003e• Maximum Ground Fault Current: 60 A\u003cbr data-start=\"1450\" data-end=\"1453\"\u003e• Ground Fault Time Adjustment: 0.1–1.0 Seconds\u003cbr data-start=\"1500\" data-end=\"1503\"\u003e• Output Signal: Uses Basic 2E Relay Output Contacts\u003cbr data-start=\"1555\" data-end=\"1558\"\u003e• Trip Indication: LED with Manual Reset\u003cbr data-start=\"1598\" data-end=\"1601\"\u003e• Zero Sequence Current Transformer (ZCT): 12 A : 40 mA, 300 Ω Connected Impedance\u003cbr data-start=\"1683\" data-end=\"1686\"\u003e• Installation: Plug-In Optional Module for 2E Relay\u003cbr data-start=\"1738\" data-end=\"1741\"\u003e• Mounting: Motor Control Center (MCC) \/ Control Panel\u003cbr data-start=\"1795\" data-end=\"1798\"\u003e• Application: Three-Phase Motor Ground Fault Protection \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"1894\" data-end=\"1918\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"1920\" data-end=\"1983\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Toshiba RC81C\u003cbr data-start=\"1935\" data-end=\"1938\"\u003e• Toshiba RC820-RC81A\u003cbr data-start=\"1959\" data-end=\"1962\"\u003e• Toshiba RC800-RC81A\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Toshiba","offers":[{"title":"New Surplus No Box","offer_id":51714113044782,"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_663d7dda-a76f-48be-aab4-fe763f8aec4e.jpg?v=1770416798","url":"https:\/\/plgautomation.com\/products\/toshiba-corporation-rc81a-ground-fault-module","provider":"PLG Automation ","version":"1.0","type":"link"}