{"product_id":"carrier-ca15na01800gbaaa-contactor-1iwxlq","title":"OEM Carrier 40A Contactor 2-Pole 24V Coil for CA15NA01800GBAAA","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model CA15NA01800GBAAA\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM contactor (part number \u003cstrong\u003eHN51KC024\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier CA15NA01800GBAAA\u003c\/strong\u003e split-system air conditioner. The contactor is the high-voltage switching relay that receives a 24V signal from the thermostat and closes the circuit to power the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a burned coil, or a stuck plunger — the most common symptoms are an AC unit that won't turn on, a condenser that runs continuously without cycling off, or a buzzing sound at the outdoor unit with no compressor engagement.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V AC coil voltage | 30–40 amp contact rating | Direct OEM replacement for part number HN51KC024 | Factory-matched electrical tolerances\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors use silver-alloy contact tips rated for thousands of switching cycles. Generic contactors frequently use inferior contact materials that pit and oxidize faster, leading to repeat failures within a single cooling 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 verify voltage is absent with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, multimeter. Photograph all wiring connections before removing the old contactor to ensure correct reinstallation.\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 cutoff ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM drop-in replacement for the Carrier \u003cstrong\u003eCA15NA01800GBAAA\u003c\/strong\u003e split-system condenser. Always verify coil voltage and pole configuration against your unit's wiring diagram and data plate before ordering. Our HVAC parts specialists are available to confirm fitment — no guesswork required. \u003cstrong\u003eIn stock and ready to ship today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909651517811,"sku":"CARRIE-CA15NA01800GBAAA-CONTACTOR-HN51KC024","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909651550579,"sku":"CARRIE-CA15NA01800GBAAA-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_601d5563-8438-4012-8ddb-a5ca5072faba.jpg?v=1782898888","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ca15na01800gbaaa-contactor-1iwxlq","provider":"National HVAC Parts","version":"1.0","type":"link"}