{"product_id":"carrier-ca15na02400gaaaa-contactor-1iwxlq","title":"OEM Carrier Contactor 2-Pole 24V Coil for CA15NA02400GAAAA","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model CA15NA02400GAAAA\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-specified contactor (part number \u003cstrong\u003eHN51KC024\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier CA15NA02400GAAAA\u003c\/strong\u003e split-system air conditioner. The contactor is a high-voltage relay controlled by the 24V thermostat signal — when the thermostat calls for cooling, the contactor closes and sends 240V power to the compressor and condenser fan motor. A failed contactor is one of the most common causes of an AC unit that runs continuously with no cooling, won't start at all, or makes a loud chattering or buzzing noise from the disconnect box.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V AC coil | 30-amp rated contacts | 240V power circuit | Factory-matched OEM replacement for part number HN51KC024\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM contactor is built to Carrier's exact coil pull-in voltage and contact gap tolerances. Aftermarket contactors frequently use lower-grade contact materials that pit and arc faster under load, 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 and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, non-contact voltage tester. Photograph all wiring connections before removing the old contactor. Swap wires one at a time to avoid miswiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Backed by Carrier's 1-year OEM parts warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eCA15NA02400GAAAA\u003c\/strong\u003e split-system condenser. Verify your existing contactor's pole count, amp rating, and coil voltage against your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before your order ships — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909651419507,"sku":"CARRIE-CA15NA02400GAAAA-CONTACTOR-HN51KC024","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909651452275,"sku":"CARRIE-CA15NA02400GAAAA-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_a61e153d-b977-407a-a410-9c9b76ba380f.jpg?v=1782904518","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ca15na02400gaaaa-contactor-1iwxlq","provider":"National HVAC Parts","version":"1.0","type":"link"}