{"product_id":"carrier-ca17na02400gbaaa-contactor-1iwxlq","title":"OEM Carrier 40A Contactor 2-Pole 24V Coil for CA17NA02400GBAAA","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model CA17NA02400GBAAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement contactor (part number \u003cstrong\u003eHN51KC024\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier CA17NA02400GBAAA\u003c\/strong\u003e split-system air conditioner. The contactor is a high-voltage relay that receives a 24V signal from the thermostat and closes the circuit to send line voltage to the compressor and condenser fan motor. When a contactor fails — due to pitted contacts, a burned coil, or contacts welded shut — the system will either refuse to start entirely or run continuously without responding to thermostat commands.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V coil voltage | 30–40 amp rating | Screw-terminal connections | Direct factory replacement for OEM part HN51KC024\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HN51KC024 contactor is manufactured to Carrier's exact coil pull-in voltage and contact-gap specifications. Generic contactors may use lower-grade silver-alloy contacts that pit faster under load, causing premature failure — especially in high-cycle climates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the breaker and verify zero voltage with a multimeter before touching any terminals. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship the same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eCA17NA02400GBAAA\u003c\/strong\u003e split-system condenser. Cross-reference OEM part number HN51KC024 against your unit's data plate and existing contactor label to confirm pole count, amperage, and coil voltage before ordering. Our parts specialists are available to verify fitment — contact us before you buy if you have any doubt.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909644800371,"sku":"CARRIE-CA17NA02400GBAAA-CONTACTOR-HN51KC024","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909644833139,"sku":"CARRIE-CA17NA02400GBAAA-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_8c39c668-0736-461d-88e4-949cd8b8364a.jpg?v=1782898899","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ca17na02400gbaaa-contactor-1iwxlq","provider":"National HVAC Parts","version":"1.0","type":"link"}