{"product_id":"carrier-c4850c50aj03591-contactor-1k1tl0","title":"OEM Carrier 2-Pole 40A Contactor 24V Coil for C4850C50AJ03591 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor for Model C4850C50AJ03591\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement contactor for the \u003cstrong\u003eCarrier C4850C50AJ03591\u003c\/strong\u003e packaged unit. The contactor is a high-voltage relay that closes when the thermostat sends a 24V signal, allowing line voltage to energize the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a burned coil, or a stuck plunger — your system will either refuse to start entirely, run continuously without shutting off, or trip the breaker. Replaces OEM part numbers \u003cstrong\u003eHN53CB115\u003c\/strong\u003e and \u003cstrong\u003eHN53HF122\u003c\/strong\u003e.\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 | Direct OEM replacement per factory spec | Compatible with R-410A system electrical loads\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 units commonly use lower-grade alloys that pit and weld shut prematurely, leading to compressor damage or runaway operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Always photograph existing wiring before disconnecting terminals. The line-voltage terminals on a contactor can hold a lethal charge — verify power is off with a multimeter before touching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eC4850C50AJ03591\u003c\/strong\u003e packaged unit. Cross-references OEM part numbers HN53CB115 and HN53HF122. Always confirm pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us and we'll confirm.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909840785779,"sku":"CARRIE-C4850C50AJ03591-CONTACTOR-HN53CB115","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909840818547,"sku":"CARRIE-C4850C50AJ03591-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_006e1a02-e972-4b6d-8449-cf2efc5e7629.jpg?v=1782897525","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50aj03591-contactor-1k1tl0","provider":"National HVAC Parts","version":"1.0","type":"link"}