{"product_id":"carrier-hb1ajx036000aaaa-contactor-1iwybu","title":"OEM Carrier Contactor 2-Pole 24V Coil for HB1AJX036000AAAA","description":"\u003ch1\u003eOEM Carrier Contactor 2-Pole 24V Coil for Model HB1AJX036000AAAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement contactor (part number \u003cstrong\u003eHN51KB024\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier HB1AJX036000AAAA\u003c\/strong\u003e split-system condenser. The contactor acts as a high-voltage relay — when the thermostat calls for cooling, the 24V control circuit energizes the coil, closing the contacts and sending 240V power to the compressor and condenser fan motor. A failed contactor is one of the most common causes of an air conditioner that simply won't turn on, hums without starting, or experiences intermittent cooling loss. Burned or pitted contact points are a telltale sign of contactor failure.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole design | 24V coil voltage | High-amperage contacts rated for compressor load | Direct OEM replacement — part number HN51KB024 | Factory-matched contact material and coil resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM contactor uses factory-spec contact alloy and coil windings. Generic contactors frequently feature substandard contact surfaces that pit and corrode faster, leading to premature failure and potential compressor damage. OEM is always the recommended replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — ALWAYS shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Photograph all wire connections before removing the old contactor. Line-voltage terminals carry 240V — treat with extreme caution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In-stock and ships same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct drop-in replacement for the \u003cstrong\u003eCarrier HB1AJX036000AAAA\u003c\/strong\u003e 3-ton split-system condenser. Verify your existing contactor's pole count and coil voltage against your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — no guesswork, no returns.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909351068019,"sku":"CARRIE-HB1AJX036000AAAA-CONTACTOR-HN51KB024","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909351100787,"sku":"CARRIE-HB1AJX036000AAAA-CONTACTOR-HN51KB024-GEN","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-2pole-HN51KB024_3562a4e9-a7f4-45e9-a56b-5d815c3322cc.jpg?v=1782904790","url":"https:\/\/nationalhvacparts.com\/products\/carrier-hb1ajx036000aaaa-contactor-1iwybu","provider":"National HVAC Parts","version":"1.0","type":"link"}