{"product_id":"tempstar-2-pole-40a-contactor-for-t4a660gka100-24v-coil-ships-today","title":"Tempstar 2-Pole 40A Contactor for T4A660GKA100 — 24V Coil | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM 2-pole definite-purpose contactor (part number 1172786) is the switch that powers the compressor and condenser fan motor in your Tempstar T4A660GKA100 air conditioner. Rated at 40 amps with a 24-volt control coil, it pulls its contacts closed when the thermostat calls for cooling, sending line voltage to the outdoor unit. Contactors take heavy electrical wear because the contacts arc each time they open and close, making them a frequent failure point. Common symptoms include a unit that won't start, a steady hum or chatter at the contactor, pitted or burned contacts, or an outdoor unit that runs nonstop even after cooling is satisfied.\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 Number\u003c\/td\u003e\n\u003ctd\u003e1172786\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\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\u003e40 Amps\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\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar (ICP \/ Heil)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eT4A660GKA100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eA direct OEM replacement for the Tempstar T4A660GKA100 condensing unit. The 1172786 contactor is used across many ICP-family outdoor units (Tempstar, Heil, Comfortmaker, and related Carrier-engineered platforms). Confirm the number printed on your existing contactor before ordering.\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 outdoor disconnect and breaker, 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 electrical access panel on the condensing unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all wire connections to match them exactly on the new contactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Move the line, load, and 24V coil wires one at a time, then unscrew the old contactor from its mounting bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new contactor, reconnect each wire per your photo, and verify the 24V coil leads are landed correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, call for cooling, and confirm the contacts pull in and the compressor and fan start.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOutdoor unit won't start or only buzzes when cooling is called\u003c\/li\u003e\n\u003cli\u003eLoud humming, chattering, or clicking at the contactor\u003c\/li\u003e\n\u003cli\u003eVisibly pitted, burned, or welded contacts\u003c\/li\u003e\n\u003cli\u003eCompressor and fan keep running after the thermostat is satisfied\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 on unused parts. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021803536755,"sku":"1172786-GEN","price":32.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048394244467,"sku":"1172786","price":42.84,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-1172786_78eb232d-03f4-4e00-960c-5c3df7d70c2f.jpg?v=1782437333","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-2-pole-40a-contactor-for-t4a660gka100-24v-coil-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}