{"product_id":"carrier-ha1ajx030000abaa-contactor-1iwybu","title":"OEM Carrier 30A Contactor 2-Pole 24V Coil for HA1AJX030000ABAA","description":"\u003ch1\u003eOEM Carrier Contactor 2-Pole 24V for Model HA1AJX030000ABAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement contactor (part number \u003cstrong\u003eHN51KB024\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier HA1AJX030000ABAA\u003c\/strong\u003e split-system air conditioner. The contactor is a high-voltage relay that receives a 24V signal from your thermostat and closes to send 240V power to the compressor and condenser fan motor. When the contactor fails — through pitted contacts, a burned coil, or contacts welded shut — your system will either refuse to turn on at all, run continuously without responding to the thermostat, or trip the breaker repeatedly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V AC coil voltage | Compatible with standard 30A load circuits | Direct OEM replacement for part number HN51KB024\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM contactor meets Carrier's exact contact gap, coil pull-in voltage, and arc-suppression standards. Generic contactors often use lower-grade contact materials that pit faster under high-cycle summer loads, leading to repeat failures within a single season.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Always shut off power at the disconnect box AND the breaker panel before beginning. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, multimeter, and needle-nose pliers. Photograph all wiring connections before removing the old unit. Discharge any capacitors nearby before working in the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before our daily cutoff ship the same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eHA1AJX030000ABAA\u003c\/strong\u003e air handler and associated condensing equipment. Verify coil voltage and pole configuration on your existing contactor's label before ordering. Not sure if this is your part? Our HVAC parts specialists confirm fitment before you buy — no guesswork.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909369876851,"sku":"CARRIE-HA1AJX030000ABAA-CONTACTOR-HN51KB024","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909369909619,"sku":"CARRIE-HA1AJX030000ABAA-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_93fce75c-0a69-46cc-bfac-6a728c01e36e.jpg?v=1782898661","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ha1ajx030000abaa-contactor-1iwybu","provider":"National HVAC Parts","version":"1.0","type":"link"}