{"product_id":"carrier-c50a406021-contactor-1k1tl0","title":"OEM Carrier Contactor 2-Pole 24V Coil for C50A406021","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model C50A406021\u003c\/h1\u003e\u003cp\u003eThis OEM contactor is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A406021\u003c\/strong\u003e packaged rooftop unit. The contactor is a high-voltage relay that closes the circuit between your power supply and the compressor and condenser fan motor when the thermostat calls for cooling. 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 breakers repeatedly. Replaces OEM part numbers \u003cstrong\u003eHN53CB115\u003c\/strong\u003e, \u003cstrong\u003eHN53HF122\u003c\/strong\u003e, and \u003cstrong\u003eHN53HG120\u003c\/strong\u003e.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-Pole configuration | 24V control coil | Factory-rated amperage for compressor load | Direct OEM replacement with exact terminal layout and mounting footprint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors feature silver-alloy contact tips rated to factory specifications, ensuring reliable pull-in voltage and long contact life. Generic contactors often use inferior alloys that pit and corrode faster, leading to premature failure and potential compressor damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect and lock out power at the disconnect box before beginning. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removal 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 stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC50A406021\u003c\/strong\u003e commercial packaged rooftop unit. Cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120 — all three are covered by this single replacement contactor. Verify pole count, coil voltage, and amperage rating on your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy. \u003cstrong\u003eOrder now — in stock and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909679370611,"sku":"CARRIE-C50A406021-CONTACTOR-HN53CB115","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909679403379,"sku":"CARRIE-C50A406021-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_d9a149fa-d770-4b43-9a2c-81e48a24862b.jpg?v=1782904465","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a406021-contactor-1k1tl0","provider":"National HVAC Parts","version":"1.0","type":"link"}