{"product_id":"carrier-ha1cjx030000abaa-contactor-1iwybu","title":"OEM Carrier Contactor 2-Pole 24V Coil for HA1CJX030000ABAA","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor HN51KB024 for Model HA1CJX030000ABAA\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM contactor (part number \u003cstrong\u003eHN51KB024\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier HA1CJX030000ABAA\u003c\/strong\u003e split-system air conditioner. The contactor is a high-voltage relay that acts as the main power switch for your condensing unit — when the thermostat calls for cooling, a 24V signal from the control board energizes the contactor coil, closing the high-voltage contacts and sending power to the compressor and condenser fan motor. A failed contactor is one of the most common causes of an outdoor unit that simply won't turn on, hums without starting, or runs continuously without cycling off due to welded contacts.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V AC coil voltage | Factory-rated amperage for Carrier HA1CJX030000ABAA | Direct OEM replacement per part number HN51KB024\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM contactor is manufactured to Carrier's exact coil pull-in voltage, contact material, and amp rating specifications. Generic contactors frequently use lower-grade silver-alloy contacts that arc and pit more rapidly, leading to premature failure and potential compressor damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Always disconnect power at the disconnect box and verify zero voltage with a multimeter before starting. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Photograph all high-voltage wiring connections before disconnecting. Coil wires are low-voltage (24V) — keep them labeled separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the direct OEM replacement contactor for the Carrier \u003cstrong\u003eHA1CJX030000ABAA\u003c\/strong\u003e condensing unit. Always verify the OEM part number HN51KB024 against your unit's data plate or existing contactor label before ordering. Not sure if this is the right part? Our HVAC parts specialists verify fitment before you buy — contact us with your model and serial number.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909356212595,"sku":"CARRIE-HA1CJX030000ABAA-CONTACTOR-HN51KB024","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909356245363,"sku":"CARRIE-HA1CJX030000ABAA-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_072629d5-2327-4045-a449-9b84792e97df.jpg?v=1782904787","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ha1cjx030000abaa-contactor-1iwybu","provider":"National HVAC Parts","version":"1.0","type":"link"}