{"product_id":"carrier-c4850c50aj02551-contactor-1k1tl0","title":"OEM Carrier 40A Contactor 2-Pole 24V Coil for C4850C50AJ02551","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor for Model C4850C50AJ02551\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement contactor for the \u003cstrong\u003eCarrier C4850C50AJ02551\u003c\/strong\u003e packaged unit. The contactor is the high-voltage switching relay that closes the 240V power circuit to the compressor and condenser fan motor each time the thermostat sends a 24V call for cooling. When a contactor fails — due to pitted or burned contact points, a stuck plunger, or a failed coil — the system will either refuse to start entirely, run continuously without shutting off, or chatter and short-cycle under load. Replacing a failed contactor is one of the most common and cost-effective HVAC repairs available.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-Pole configuration | 24V AC coil voltage | 30–40A load rating | Replaces OEM part numbers \u003cstrong\u003eHN53CB115\u003c\/strong\u003e and \u003cstrong\u003eHN53HF122\u003c\/strong\u003e | Factory-matched contact material and coil pull-in voltage\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 duty cycle of your Carrier unit. Generic contactors often use lower-grade contacts that pit faster under compressor inrush current, leading to repeat failures within one to two seasons.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and confirm zero voltage with a multimeter before proceeding. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers. Photograph all wiring before removing the old contactor. Transfer one wire at a time to avoid miswiring. Total job typically takes 20–30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier C4850C50AJ02551\u003c\/strong\u003e packaged unit. Cross-references OEM part numbers HN53CB115 and HN53HF122. Always verify pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909845209459,"sku":"CARRIE-C4850C50AJ02551-CONTACTOR-HN53CB115","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909845242227,"sku":"CARRIE-C4850C50AJ02551-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_2b6dd829-5ecb-4ddb-b743-2c6053a777f2.jpg?v=1782898785","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50aj02551-contactor-1k1tl0","provider":"National HVAC Parts","version":"1.0","type":"link"}