{"product_id":"tempstar-contactor-for-t4a418gka200-1-pole-30a-24v-w-shunt-ships-today","title":"Tempstar Contactor for T4A418GKA200 – 1-Pole 30A 24V w\/ Shunt | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine OEM single-pole contactor (part number 1172472) for the Tempstar T4A418GKA200 condensing unit. The contactor is a 1-pole, 30-amp electromechanical relay with a 24-volt control coil and an integrated auxiliary shunt. Its job is simple but critical: when the thermostat calls for cooling, the 24V coil energizes and pulls the contacts closed, sending line voltage to the compressor and condenser fan motor. When a contactor fails, the entire outdoor unit goes dead — even though the indoor blower and thermostat may still operate normally. Common failure modes include pitted or welded contacts, a burned-out coil, chattering, or insects and debris lodged in the contact gap. Because it switches high current thousands of times per season, the contactor is one of the most frequently replaced components in any split-system air conditioner.\u003c\/p\u003e\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\u003e1172472\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eDefinite Purpose Contactor, with shunt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoles\u003c\/td\u003e\n\u003ctd\u003e1 (Single-Pole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Rating\u003c\/td\u003e\n\u003ctd\u003e30 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\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eT4A418GKA200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eThis contactor is the factory-specified replacement for the Tempstar T4A418GKA200 air conditioner and is shared across many ICP-family (Tempstar, Heil, Comfortmaker) condensing units that use OEM part 1172472. Always confirm the part number printed on your existing contactor before ordering.\u003c\/p\u003e\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 across the line terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e – Remove the condenser unit service panel to expose the control compartment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e – Photograph every wire on the existing contactor before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e – Pull the line, load, and 24V coil wires off the spade terminals, then unscrew the contactor from the mounting bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e – Mount the new contactor, reconnect each wire exactly as photographed, including the shunt lead.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e – Restore power and confirm the contacts pull in on a cooling call and the compressor and fan start.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOutdoor unit is silent while the thermostat calls for cooling.\u003c\/li\u003e\n\u003cli\u003eLoud humming or buzzing from the condenser without the compressor starting.\u003c\/li\u003e\n\u003cli\u003eVisibly pitted, burned, or welded contacts.\u003c\/li\u003e\n\u003cli\u003eContactor chatters or fails to pull in fully.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day before 3 PM CST. 30-day returns. National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021806616947,"sku":"1172472-GEN","price":32.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048423407987,"sku":"1172472","price":41.6,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-1pole-1172472_decf2ead-9b61-4f24-878d-38bb57c0a8bc.jpg?v=1782959043","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-contactor-for-t4a418gka200-1-pole-30a-24v-w-shunt-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}