{"product_id":"carrier-ha1cjx030000aaaa-contactor-1iwybu","title":"OEM Carrier Contactor 24V Coil 2-Pole for HA1CJX030000AAAA","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model HA1CJX030000AAAA\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-specified contactor (part number \u003cstrong\u003eHN51KB024\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier HA1CJX030000AAAA\u003c\/strong\u003e split-system air conditioner. The contactor is a high-voltage relay that receives a 24V signal from the thermostat and closes to send 240V power to the compressor and condenser fan motor. When the contactor fails — whether from pitted contacts, a burned coil, or a stuck plunger — the result is an AC unit that either refuses to turn on at all or runs continuously without responding to thermostat commands.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole design | 24V coil voltage | Factory-rated amperage for HA1CJX030000AAAA | OEM part number HN51KB024 | Direct factory replacement with no modifications required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors like HN51KB024 feature precision-machined contact tips and coil windings rated to exact factory tolerances. Generic contactors frequently use lower-grade contact alloys that pit and burn faster, reducing service life significantly in high-cycle applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at both the disconnect box and the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removal to ensure correct reinstallation of line and load terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our stocking warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed and factory-matched for Carrier model \u003cstrong\u003eHA1CJX030000AAAA\u003c\/strong\u003e. Verify your existing contactor's pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — just reach out before you buy. In stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909356671347,"sku":"CARRIE-HA1CJX030000AAAA-CONTACTOR-HN51KB024","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909356704115,"sku":"CARRIE-HA1CJX030000AAAA-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_6ab82ba8-232b-4ff9-bccd-0ccea1d98edf.jpg?v=1782905293","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ha1cjx030000aaaa-contactor-1iwybu","provider":"National HVAC Parts","version":"1.0","type":"link"}