{"product_id":"icp-2-pole-contactor-for-rgs121hdcb0aaa-30a-40a-24v-coil-ships-today","title":"ICP 2-Pole Contactor for RGS121HDCB0AAA — 30A\/40A 24V Coil | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine OEM 2-pole definite purpose contactor for the ICP \/ Heil \/ Tempstar RGS121HDCB0AAA system, available in 30-amp (OEM 1178074) and 40-amp (OEM 1178211) ratings, both with a 24-volt control coil. The contactor is the electromechanical switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. When 24V is applied to the coil, the magnetic field pulls the contacts closed, sending line voltage to the high-amperage loads. Over thousands of cycles the contacts pit, burn, and weld, and the coil can lose its pull — leaving you with a unit that hums, chatters, won't start, or refuses to shut off. Replacing a worn contactor restores clean, reliable switching and protects the more expensive compressor downstream.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\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\u003eOEM Part Numbers\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP \/ Heil \/ Tempstar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoles\u003c\/td\u003e\n\u003ctd\u003e2-Pole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Rating\u003c\/td\u003e\n\u003ctd\u003e30A \/ 40A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eEngineered as a direct OEM replacement for the ICP \/ Heil \/ Tempstar RGS121HDCB0AAA. The 2-pole, 24V-coil design is also common across many ICP-family gas furnace and condensing unit platforms. Always confirm the amp rating and coil voltage against the part you are removing before installing.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the breaker and the local disconnect, then verify zero voltage with a multimeter before touching any wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the service\/electrical panel to expose the contactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and terminal before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Note the line (L1\/L2), load (T1\/T2), and 24V coil terminals, transfer wires one at a time, and unbolt the old contactor from its bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new contactor and reconnect each wire to the matching terminal per your photos.\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 or buzzing.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLoud humming, buzzing, or chattering at the contactor.\u003c\/li\u003e\n\u003cli\u003ePitted, blackened, or welded contacts visible on inspection.\u003c\/li\u003e\n\u003cli\u003eCompressor\/condenser fan won't start, or won't shut off after the call ends.\u003c\/li\u003e\n\u003cli\u003eBurnt-plastic smell or scorch marks around the contactor body.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day on orders placed 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":63027536953715,"sku":"1178074-GEN","price":32.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63047939785075,"sku":"1178074","price":41.6,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-2pole-1178074_95960a0b-c552-4fb6-9ac2-6800ec3a9fba.jpg?v=1782881567","url":"https:\/\/nationalhvacparts.com\/products\/icp-2-pole-contactor-for-rgs121hdcb0aaa-30a-40a-24v-coil-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}