{"product_id":"a075n276","title":"Cummins OTEC Spec C 120\/240V Single-Phase 225A Service Rated Transfer Switch","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e225A, 120\/240V, single-phase open-transition ATS rated for service entrance installation. Electrically operated, mechanically held, break-before-make switching with dual mechanical and electrical interlocking. Service rated — can be installed at the service entrance without additional upstream overcurrent protection. NEMA 3R enclosure rated for indoor and outdoor installation.\u003c\/p\u003e\n\u003cblockquote class=\"ml-2 border-l-4 border-border-300\/10 pl-4 text-text-300\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBreaker Rating Update — September 2025:\u003c\/strong\u003e Cummins issued revised Withstand Closing Breaker Ratings for the Spec C family. UL and CUL listing confirmed August 14, 2025. AHJ documentation available in PDFs below.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch1 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eFeatures \u0026amp; Benefits\u003c\/h1\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eService Entrance Rated\u003c\/strong\u003e Listed for installation at the service entrance. No separate main disconnect required upstream. Simplifies installation and reduces overall equipment cost on qualifying projects.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003ePC40-11 Controller\u003c\/strong\u003e Microprocessor-based. Backlit LCD. Soft-touch keypad. Front panel or PC configuration. Ships with Modbus RTU and TCP. Configurable I\/O. Programmable exercise scheduler included.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eVoltage Imbalance Sensing\u003c\/strong\u003e Monitors both sources continuously. Catches imbalance conditions beyond standard over\/under voltage limits.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003ePhase Rotation Monitoring\u003c\/strong\u003e Confirms correct phase sequence on both sources before every transfer. Blocks transfer to a miswired or out-of-sequence source.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eContact Assembly\u003c\/strong\u003e Silver alloy main contacts under high closing pressure. Dedicated arcing contacts protect main contacts from switching wear. Multi-layer arc chutes extinguish arcs after each operation. UL 1008 certified — contacts included.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eNEMA 3R Enclosure\u003c\/strong\u003e Rated for rain, sleet, and external ice. Suitable for rooftops, outdoor generator pads, and exposed mechanical spaces.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eField-Install Options\u003c\/strong\u003e Remote annunciator — Load shedding — Integral control power supply — Ethernet\/Modbus TCP module — Anticondensation heater — Auxiliary contact expansion (8 or 16 configurable contact sets)\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch1 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eSpecifications\u003c\/h1\u003e\n\u003cdiv class=\"overflow-x-auto w-full px-2 mb-6\"\u003e\n\u003ctable class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"\u003e\n\u003cthead class=\"text-left\"\u003e\n\u003ctr\u003e\n\u003cth class=\"text-text-100 border-b-0.5 border-border-300\/60 py-2 pr-4 align-top font-bold\"\u003e\u003c\/th\u003e\n\u003cth class=\"text-text-100 border-b-0.5 border-border-300\/60 py-2 pr-4 align-top font-bold\"\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eVoltage\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e120\/240V, Single-Phase, 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eAmperage\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e225A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eEnclosure\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eNEMA 3R Indoor\/Outdoor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eController\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003ePowerCommand PC40-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eTransition\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eOpen Delayed; Open-In-Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eTransfer Time\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e≤6 cycles \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eNeutral Bar\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eFull-rated with lugs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eAux Contacts\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e2x isolated N\/O, 10A\/250V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eSurge Compliance\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eIEEE C62.41 \/ C62.42\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eArc Interruption\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eMulti-layer arc chute assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eManual Override\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eYes — all sources de-energized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eService Rating\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eService Entrance Rated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eCertification\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eUL 1008\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch1 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eWarranty\u003c\/h1\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eOne-year Cummins limited warranty. Covers unit, contact assemblies, and PC40-11 control. \u003c\/p\u003e","brand":"Cummins","offers":[{"title":"Default Title","offer_id":42897262936169,"sku":"A075N276","price":7866.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0636\/8913\/0089\/files\/1734903986.386.513__11506.jpg?v=1771637019","url":"https:\/\/www.mrvoltinc.com\/products\/a075n276","provider":"Mr. Volt, Inc.","version":"1.0","type":"link"}