{"product_id":"tempstar-2-pole-40a-contactor-for-t4a660gkb100-24v-coil-ships-today","title":"Tempstar 2-Pole 40A Contactor for T4A660GKB100 — 24V Coil | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM 2-pole definite-purpose contactor (part number 1172786) is the electrically-controlled switch that powers up the compressor and condenser fan motor in your Tempstar T4A660GKB100 air conditioner. Rated at 40 amps with a 24-volt control coil, it energizes when the thermostat calls for cooling, pulling its contacts closed to deliver line voltage to the outdoor unit. Contactors are one of the most common failure points in any condensing unit because the contacts arc every time they open and close. Typical failure symptoms include a unit that won't start, a humming or chattering sound at the contactor, pitted or burned contacts, or an outdoor fan and compressor that run continuously even after the thermostat 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\u003eT4A660GKB100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eThis contactor is a direct OEM replacement for the Tempstar T4A660GKB100 condensing unit. The same 1172786 component is shared across many ICP-family outdoor units (Tempstar, Heil, Comfortmaker, and related Carrier-engineered platforms). Always confirm the printed part number 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 the 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 so you can match them exactly on the new contactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Note the line, load, and 24V coil terminals, then transfer wires one at a time. Unscrew the contactor from its mounting bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new contactor, reconnect each wire to the matching terminal per your photo, and confirm 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 verify the contacts pull in cleanly 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 (stuck closed)\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":63021803471219,"sku":"1172786-GEN","price":32.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048394342771,"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_5f6acbc2-3082-49a8-b2be-b53e774b95e5.jpg?v=1782437337","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-2-pole-40a-contactor-for-t4a660gkb100-24v-coil-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}