{"product_id":"carrier-c4850c50aj02021-contactor-1k1tl0","title":"OEM Carrier Contactor 2-Pole 24V Coil for C4850C50AJ02021","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model C4850C50AJ02021\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-replacement contactor (part number \u003cstrong\u003eHN53CB115\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C4850C50AJ02021\u003c\/strong\u003e packaged unit. The contactor is a high-voltage relay that acts as the primary on\/off switch for your system's compressor and condenser fan motor. When the thermostat calls for cooling, the 24V control circuit energizes the contactor coil, pulling in the contact points and allowing 240V power to flow to the compressor. A failed or pitted contactor is one of the most common reasons a packaged unit will hum without starting, fail to respond to thermostat calls, or run continuously without cycling off.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V AC coil voltage | 40-amp contact rating | Direct OEM replacement for Carrier part number HN53CB115 | Screw-terminal connections for tool-free wire transfer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM contactor features factory-spec contact plating and coil windings, ensuring reliable pull-in voltage and long service life. Generic contactors frequently use thinner contact surfaces that pit and arc weld faster, leading to repeat failures within one to two seasons.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the disconnect box and verify voltage is absent with a multimeter before beginning work. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, multimeter. Photograph all wiring before removing the old contactor and transfer wires one at a time to avoid miswiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Backed by a 1-year OEM factory warranty. 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 C4850C50AJ02021\u003c\/strong\u003e packaged unit. Always confirm coil voltage and pole configuration match your unit's wiring diagram before ordering. Have your model and serial number handy — our HVAC parts specialists are available to verify fitment before you buy. In stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909846290803,"sku":"CARRIE-C4850C50AJ02021-CONTACTOR-HN53CB115","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909846323571,"sku":"CARRIE-C4850C50AJ02021-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_4cbaf92c-c77b-44f2-862f-8a57712b2a56.jpg?v=1782904228","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50aj02021-contactor-1k1tl0","provider":"National HVAC Parts","version":"1.0","type":"link"}