{"product_id":"carrier-c4850c50aj05111-contactor-1k1tl0","title":"OEM Carrier 2-Pole 24V Coil Contactor for C4850C50AJ05111 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor for Model C4850C50AJ05111\u003c\/h1\u003e\u003cp\u003eThis OEM replacement contactor is the factory-specified part for the \u003cstrong\u003eCarrier C4850C50AJ05111\u003c\/strong\u003e packaged unit. The contactor is a high-voltage relay that receives a 24V signal from the thermostat and closes the circuit to deliver line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted or burned contacts, a stuck plunger, or a failed coil — the system will not energize at all, or may run continuously without responding to thermostat commands. OEM part numbers \u003cstrong\u003eHN53CB115\u003c\/strong\u003e and \u003cstrong\u003eHN53HF122\u003c\/strong\u003e are both confirmed replacements for this application.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-Pole configuration | 24V coil voltage | High-amperage rated contacts | Direct OEM factory replacement — matches original mounting footprint and terminal layout on Carrier C4850C50AJ05111\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 alternatives frequently use lower-grade contacts that pit and weld shut prematurely, leading to compressor damage or nuisance lockouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power (including 240V line and 24V control) before beginning. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor to ensure correct reinstallation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff 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 C4850C50AJ05111\u003c\/strong\u003e packaged unit. Cross-references OEM part numbers HN53CB115 and HN53HF122. Confirm coil voltage and pole count on your unit's data plate prior to ordering. Our fitment team is available to verify compatibility before you buy — ships today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909835805043,"sku":"CARRIE-C4850C50AJ05111-CONTACTOR-HN53CB115","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909835837811,"sku":"CARRIE-C4850C50AJ05111-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_ab812431-eecb-4c1e-8253-c5a366006a43.jpg?v=1782897236","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50aj05111-contactor-1k1tl0","provider":"National HVAC Parts","version":"1.0","type":"link"}