{"product_id":"carrier-ca14na02400gaaaa-contactor-1iwxlq","title":"OEM Carrier 40A Contactor 2-Pole 24V Coil for CA14NA02400GAAAA","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model CA14NA02400GAAAA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement contactor (part# \u003cstrong\u003eHN51KC024\u003c\/strong\u003e) is the factory-specified high-voltage relay for the \u003cstrong\u003eCarrier CA14NA02400GAAAA\u003c\/strong\u003e split-system air conditioner. The contactor acts as the main power switch between your electrical panel and the compressor and condenser fan motor — when the thermostat calls for cooling, the 24V control board energizes the contactor coil, closing the high-voltage circuit that brings the system to life. A failed contactor is one of the most common reasons an outdoor AC unit appears completely dead or hums without starting. Burned or pitted contact points, a welded-shut contactor, or a failed coil will all result in a no-cool condition.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-Pole configuration | 24V AC coil voltage | 30–40A rated contacts | Factory-matched for Carrier CA14NA02400GAAAA — verify amperage on data plate before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM HN51KC024 contactor uses factory-grade silver-alloy contact points rated for the exact load of your system. Generic contactors frequently use lower-grade contacts that arc and pit prematurely, leading to repeat failures within a single season.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect box AND the breaker before servicing. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before 3 PM EST ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eCA14NA02400GAAAA\u003c\/strong\u003e 2-ton single-stage R-410A split-system condenser. Always cross-reference the OEM part number \u003cstrong\u003eHN51KC024\u003c\/strong\u003e and confirm coil voltage and pole count on your unit's data plate before ordering. Our fitment team is available to verify compatibility — just reach out before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909652337011,"sku":"CARRIE-CA14NA02400GAAAA-CONTACTOR-HN51KC024","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909652369779,"sku":"CARRIE-CA14NA02400GAAAA-CONTACTOR-HN51KC024-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-HN51KC024_ac84d5c5-f3e7-4803-8a24-96f71e212dab.jpg?v=1782898883","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ca14na02400gaaaa-contactor-1iwxlq","provider":"National HVAC Parts","version":"1.0","type":"link"}