{"product_id":"icp-2-pole-contactor-for-rgs121heca0aaa-30a-40a-24v-coil-options-ships-today","title":"ICP 2-Pole Contactor for RGS121HECA0AAA — 30A \u0026 40A 24V Coil Options | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM definite-purpose contactor is the direct-fit switching relay for the ICP Tempstar \/ Heil RGS121HECA0AAA system, available in 2-pole 30-amp (part 1178074) and 2-pole 40-amp (part 1178211) ratings, both with a 24V control coil. The contactor is the electromechanical switch that energizes the compressor and condenser fan when the thermostat calls for cooling — the 24V coil pulls the contacts closed, passing line voltage to the load. Contactors are high-cycle, high-current parts, so their contacts pit, burn, and weld over time. A failed contactor is one of the most common no-cooling service calls: pitted contacts cause hard starts and chatter, while welded contacts leave the compressor running even after the call ends.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1178074 (30A), 1178211 (40A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eDefinite-purpose contactor, 2-pole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoles\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Rating\u003c\/td\u003e\n\u003ctd\u003e30A or 40A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP \/ Tempstar \/ Heil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eRGS121HECA0AAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eFits the ICP RGS121HECA0AAA system and shared Tempstar, Heil, and Comfortmaker units. Match your existing contactor's amp rating, pole count, and 24V coil voltage before ordering — choose the 30A or 40A version to match the original.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the disconnect and breaker. Verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the electrical access panel on the condensing unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all line, load, and coil wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Transfer wires one at a time or unbolt the old contactor from its mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new contactor, reconnect line, load, and 24V coil leads exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, call for cooling, and confirm the contacts pull in cleanly with no chatter.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePitted, burnt, or welded contacts\u003c\/li\u003e\n\u003cli\u003eBuzzing or chattering at the contactor\u003c\/li\u003e\n\u003cli\u003eCompressor\/fan won't start, or keeps running after the call ends\u003c\/li\u003e\n\u003cli\u003eVisible arcing or scorch marks on the terminals\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\u003cp\u003eShips same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"Direct Replacement","offer_id":63027533807987,"sku":"1178074-GEN","price":32.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63047939916147,"sku":"1178074","price":42.84,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-2pole-1178074_dbdf416f-73b7-47e4-875c-e954bf1b7509.jpg?v=1782881576","url":"https:\/\/nationalhvacparts.com\/products\/icp-2-pole-contactor-for-rgs121heca0aaa-30a-40a-24v-coil-options-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}