{"product_id":"cummins-400-amp-automatic-transfer-switch","title":"Cummins 400 Amp Automatic Transfer Switch","description":"\u003cdiv class=\"apg-product\"\u003e\n\u003ch2\u003eCummins 400 Amp Automatic Transfer Switch — OTEC400 (NSE)\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(242, 11, 11);\"\u003e\u003cstrong\u003eLead time = 13 to 16 weeks\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eKeep critical loads online with the \u003cstrong\u003eCummins 400 Amp Automatic Transfer Switch (OTEC400, NSE)\u003c\/strong\u003e. Built for dependable, seamless transfer between utility and generator power, this 400A ATS comes in your choice of \u003cstrong\u003eNEMA 1 (indoor)\u003c\/strong\u003e or \u003cstrong\u003eNEMA 3R (outdoor)\u003c\/strong\u003e enclosures, multiple voltages, and both 3-phase and 1-phase configurations. As an \u003cstrong\u003eAuthorized Cummins Dealer\u003c\/strong\u003e, AllProGenerators.com provides expert guidance and phone support to help you choose the right option for your installation.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/allprogenerators.com\/collections\/cummins-generators\"\u003eBrowse the full Cummins generator \u0026amp; accessories collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eAvailable Models (8 Options)\u003c\/h3\u003e\n\u003ctable class=\"apg-variants\" cellpadding=\"8\" cellspacing=\"0\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eMPN\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003ePhase\u003c\/th\u003e\n\u003cth\u003eAmps\u003c\/th\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003cth\u003eEnclosure\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eA075F127\u003c\/td\u003e\n\u003ctd\u003eOTEC400 (NSE)\u003c\/td\u003e\n\u003ctd\u003e3-Phase\u003c\/td\u003e\n\u003ctd\u003e400A\u003c\/td\u003e\n\u003ctd\u003e208V\u003c\/td\u003e\n\u003ctd\u003eNEMA 1 (Indoor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA075F128\u003c\/td\u003e\n\u003ctd\u003eOTEC400 (NSE)\u003c\/td\u003e\n\u003ctd\u003e3-Phase\u003c\/td\u003e\n\u003ctd\u003e400A\u003c\/td\u003e\n\u003ctd\u003e240V\u003c\/td\u003e\n\u003ctd\u003eNEMA 1 (Indoor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA075F129\u003c\/td\u003e\n\u003ctd\u003eOTEC400 (NSE)\u003c\/td\u003e\n\u003ctd\u003e3-Phase\u003c\/td\u003e\n\u003ctd\u003e400A\u003c\/td\u003e\n\u003ctd\u003e480V\u003c\/td\u003e\n\u003ctd\u003eNEMA 1 (Indoor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA075F130\u003c\/td\u003e\n\u003ctd\u003eOTEC400 (NSE)\u003c\/td\u003e\n\u003ctd\u003e3-Phase\u003c\/td\u003e\n\u003ctd\u003e400A\u003c\/td\u003e\n\u003ctd\u003e208V\u003c\/td\u003e\n\u003ctd\u003eNEMA 3R (Outdoor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA075F131\u003c\/td\u003e\n\u003ctd\u003eOTEC400 (NSE)\u003c\/td\u003e\n\u003ctd\u003e3-Phase\u003c\/td\u003e\n\u003ctd\u003e400A\u003c\/td\u003e\n\u003ctd\u003e240V\u003c\/td\u003e\n\u003ctd\u003eNEMA 3R (Outdoor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA075F132\u003c\/td\u003e\n\u003ctd\u003eOTEC400 (NSE)\u003c\/td\u003e\n\u003ctd\u003e3-Phase\u003c\/td\u003e\n\u003ctd\u003e400A\u003c\/td\u003e\n\u003ctd\u003e480V\u003c\/td\u003e\n\u003ctd\u003eNEMA 3R (Outdoor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA075F133\u003c\/td\u003e\n\u003ctd\u003eOTEC400 (NSE)\u003c\/td\u003e\n\u003ctd\u003e1-Phase\u003c\/td\u003e\n\u003ctd\u003e400A\u003c\/td\u003e\n\u003ctd\u003e240V\u003c\/td\u003e\n\u003ctd\u003eNEMA 1 (Indoor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA075F134\u003c\/td\u003e\n\u003ctd\u003eOTEC400 (NSE)\u003c\/td\u003e\n\u003ctd\u003e1-Phase\u003c\/td\u003e\n\u003ctd\u003e400A\u003c\/td\u003e\n\u003ctd\u003e240V\u003c\/td\u003e\n\u003ctd\u003eNEMA 3R (Outdoor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eNSE = Non-Service Entrance. Always verify local code requirements and compatibility with your generator and load center.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eKey Highlights\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e400 Amp capacity\u003c\/strong\u003e for robust residential and light commercial standby systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic transfer\u003c\/strong\u003e from utility to generator power with minimal interruption\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple configurations\u003c\/strong\u003e: 1-phase or 3-phase, 208\/240\/480V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNEMA 1 (indoor) or NEMA 3R (outdoor)\u003c\/strong\u003e weather-resistant enclosure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngineered by Cummins\u003c\/strong\u003e — a global leader in power generation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean wiring layout\u003c\/strong\u003e for installers and straightforward serviceability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthorized dealer support\u003c\/strong\u003e from AllProGenerators.com\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"apg-specs\" cellpadding=\"8\" cellspacing=\"0\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCummins Power Generation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOTEC (Automatic Transfer Switch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOTEC400 (NSE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmperage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e208V, 240V, 480V (see variant table)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhase Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1-Phase (240V) and 3-Phase (208V\/240V\/480V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNEMA 1 (Indoor) or NEMA 3R (Outdoor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatic transfer between utility and generator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eResidential \/ Light Commercial standby power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRefer to local code \u0026amp; inspector requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eNeed help choosing?\u003c\/strong\u003e Call our U.S. team for personalized guidance. We’ve supported Cummins customers since 2018 with real phone support and fast fulfillment.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv class=\"apg-faq\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What’s the difference between NEMA 1 and NEMA 3R?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e NEMA 1 is for indoor installs. NEMA 3R is outdoor-rated and protects against rain and ice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I choose 1-phase or 3-phase?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Most homes are 1-phase (240V). Many commercial sites require 3-phase (208\/240\/480V). Your electrician can confirm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does “NSE” mean?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Non-Service Entrance (no integral main disconnect). If a service-entrance rated switch is required by code, consult your AHJ\/electrician.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this compatible with all Cummins generators?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It’s designed for Cummins standby systems. Confirm the generator voltage\/phase and control wiring with your installer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Lead times and shipping?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Lead times vary by configuration. Contact us for current availability and freight options.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/allprogenerators.com\/collections\/cummins-generators\"\u003eSee more Cummins products »\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Structured Data: Product with variants + FAQPage --\u003e\n\u003cp\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Cummins 400 Amp Automatic Transfer Switch — OTEC400 (NSE)\",\n  \"brand\": { \"@type\": \"Brand\", \"name\": \"Cummins\" },\n  \"sku\": \"CUM-OTEC400-NSE\",\n  \"mpn\": \"OTEC400\",\n  \"category\": \"ElectricalComponent\",\n  \"description\": \"Cummins 400 Amp Automatic Transfer Switch (OTEC400, NSE). Choose NEMA 1 or NEMA 3R, 208\/240\/480V, 1-phase or 3-phase for reliable automatic transfer between utility and generator power.\",\n  \"url\": \"https:\/\/allprogenerators.com\/products\/cummins-400-amp-automatic-transfer-switch-otec400\",\n  \"isAccessoryOrSparePartFor\": {\n    \"@type\": \"Product\",\n    \"name\": \"Cummins Standby Generators\",\n    \"url\": \"https:\/\/allprogenerators.com\/collections\/cummins-generators\"\n  },\n  \"hasVariant\": [\n    { \"@type\": \"Product\", \"name\": \"A075F127 — OTEC400 (NSE) 3Ph 400A 208V NEMA 1\", \"sku\": \"CUM-OTEC400-A075F127\", \"mpn\": \"A075F127\" },\n    { \"@type\": \"Product\", \"name\": \"A075F128 — OTEC400 (NSE) 3Ph 400A 240V NEMA 1\", \"sku\": \"CUM-OTEC400-A075F128\", \"mpn\": \"A075F128\" },\n    { \"@type\": \"Product\", \"name\": \"A075F129 — OTEC400 (NSE) 3Ph 400A 480V NEMA 1\", \"sku\": \"CUM-OTEC400-A075F129\", \"mpn\": \"A075F129\" },\n    { \"@type\": \"Product\", \"name\": \"A075F130 — OTEC400 (NSE) 3Ph 400A 208V NEMA 3R\", \"sku\": \"CUM-OTEC400-A075F130\", \"mpn\": \"A075F130\" },\n    { \"@type\": \"Product\", \"name\": \"A075F131 — OTEC400 (NSE) 3Ph 400A 240V NEMA 3R\", \"sku\": \"CUM-OTEC400-A075F131\", \"mpn\": \"A075F131\" },\n    { \"@type\": \"Product\", \"name\": \"A075F132 — OTEC400 (NSE) 3Ph 400A 480V NEMA 3R\", \"sku\": \"CUM-OTEC400-A075F132\", \"mpn\": \"A075F132\" },\n    { \"@type\": \"Product\", \"name\": \"A075F133 — OTEC400 (NSE) 1Ph 400A 240V NEMA 1\",  \"sku\": \"CUM-OTEC400-A075F133\", \"mpn\": \"A075F133\" },\n    { \"@type\": \"Product\", \"name\": \"A075F134 — OTEC400 (NSE) 1Ph 400A 240V NEMA 3R\", \"sku\": \"CUM-OTEC400-A075F134\", \"mpn\": \"A075F134\" }\n  ],\n  \"aggregateRating\": {\n    \"@type\": \"AggregateRating\",\n    \"ratingValue\": \"4.9\",\n    \"reviewCount\": \"27\"\n  }\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\":\"https:\/\/schema.org\",\n  \"@type\":\"FAQPage\",\n  \"mainEntity\":[\n    {\"@type\":\"Question\",\"name\":\"What’s the difference between NEMA 1 and NEMA 3R?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"NEMA 1 is for indoor installations. NEMA 3R is designed for outdoor use and protects against rain and ice.\"}},\n    {\"@type\":\"Question\",\"name\":\"Should I choose 1-phase or 3-phase?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most homes use 1-phase 240V. Many commercial sites require 3-phase 208\/240\/480V. Confirm with your electrician.\"}},\n    {\"@type\":\"Question\",\"name\":\"What does “NSE” mean?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"NSE stands for Non-Service Entrance (no integral main disconnect). Check local code for service-entrance requirements.\"}},\n    {\"@type\":\"Question\",\"name\":\"Is this compatible with all Cummins generators?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It’s designed for Cummins standby systems. Match voltage\/phase and controls with your specific generator model.\"}},\n    {\"@type\":\"Question\",\"name\":\"What are the lead times?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Lead times vary by configuration. Contact AllProGenerators.com for current availability and freight options.\"}}\n  ]\n}\n\u003c\/script\u003e\u003c\/p\u003e","brand":"Cummins","offers":[{"title":"OTEC400 - (NSE)-3Ph-400A-208V - NEMA Type 3R","offer_id":58638067958144,"sku":"A075F130","price":6139.82,"currency_code":"EUR","in_stock":true},{"title":"OTEC400 - (NSE)-3Ph-400A-240V - NEMA Type 3R","offer_id":58638067990912,"sku":"A075F131","price":6139.82,"currency_code":"EUR","in_stock":true},{"title":"OTEC400 - (NSE)-3Ph-400A-480V - NEMA Type 3R","offer_id":58638068023680,"sku":"A075F132","price":6139.82,"currency_code":"EUR","in_stock":true},{"title":"OTEC400 - (NSE)-1Ph-400A-240V - NEMA Type 3R","offer_id":58638068056448,"sku":"A075F134","price":6139.82,"currency_code":"EUR","in_stock":true},{"title":"OTEC400 - (NSE)-3Ph-400A-208V - NEMA Type 1","offer_id":58638068089216,"sku":"A075F127","price":4891.83,"currency_code":"EUR","in_stock":true},{"title":"OTEC400 - (NSE)-3Ph-400A-240V - NEMA Type 1","offer_id":58638068121984,"sku":"A075F128","price":4891.83,"currency_code":"EUR","in_stock":true},{"title":"OTEC400 - (NSE)-3Ph-400A-480V - NEMA Type 1","offer_id":58638068154752,"sku":"A075F129","price":4891.83,"currency_code":"EUR","in_stock":true},{"title":"OTEC400 - (NSE)-1Ph-400A-240V - NEMA Type 1","offer_id":58638068187520,"sku":"A075F133","price":4891.83,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/6726\/0288\/files\/cummins-automatic-transfer-switch-otec400-nse-3ph-400a-208v-nema-type-1-cummins-400-amp-automatic-transfer-switch-1193845374.jpg?v=1785864107","url":"https:\/\/energieecke.myshopify.com\/products\/cummins-400-amp-automatic-transfer-switch","provider":"Energieecke","version":"1.0","type":"link"}