{"product_id":"carrier-c48a402751-contactor-1k1tl0","title":"OEM Carrier 2-Pole 24V Coil 40A Contactor for C48A402751 (HN53CB115) | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model C48A402751\u003c\/h1\u003e\u003cp\u003eThis OEM replacement contactor is the factory-specified part for the \u003cstrong\u003eCarrier C48A402751\u003c\/strong\u003e packaged unit. The contactor acts as a high-voltage relay, receiving a 24V signal from the thermostat or control board to close its contacts and deliver line voltage to the compressor and condenser fan motor. When a contactor fails — due to pitted contacts, a burned coil, or contact welding — the air conditioning system will either refuse to start entirely, run continuously without cycling off, or trip the breaker repeatedly. Replacing this contactor with a genuine OEM part restores reliable switching performance and protects downstream components from voltage irregularities.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V AC coil voltage | 30–40A contact rating | Factory-matched to Carrier C48A402751 electrical design | Replaces OEM part numbers \u003cstrong\u003eHN53CB115\u003c\/strong\u003e and \u003cstrong\u003eHN53HF122\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors use silver-alloy contact tips rated for the exact switching load of this unit. Generic contactors often substitute lower-grade contacts that pit faster under repeated cycling, leading to premature failure — especially in high-cycle summer conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Always disconnect power at the breaker AND verify zero voltage with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, non-contact voltage tester. Photograph all wiring connections before removal. Line-voltage terminals carry lethal voltage — if unsure, hire a licensed HVAC technician.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before 3 PM 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 \u003cstrong\u003eCarrier C48A402751\u003c\/strong\u003e packaged unit. Cross-references OEM part numbers HN53CB115 and HN53HF122. Verify coil voltage and pole configuration on your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909744120179,"sku":"CARRIE-C48A402751-CONTACTOR-HN53CB115","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909744152947,"sku":"CARRIE-C48A402751-CONTACTOR-HN53CB115-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-HN53CB115_ca12cc99-bada-49dc-b94c-512bee408c71.jpg?v=1782897220","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a402751-contactor-1k1tl0","provider":"National HVAC Parts","version":"1.0","type":"link"}