{"product_id":"carrier-contactor-c50a403521","title":"OEM Carrier Contactor C50A403521 for Model C50A403521 HVAC Part","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Contactor C50A403521 for Model C50A403521 HVAC Part\u003c\/h1\u003e\n\u003cp\u003eThis genuine OEM Carrier contactor (C50A403521) is the heavy-duty switching relay that powers your compressor and condenser fan motor whenever the thermostat calls for cooling. Manufactured to original factory tolerances, it provides clean, reliable contact closure and proper load protection for years of service. It is a direct-fit replacement for Carrier model C50A403521, matching the original coil voltage, pole count, and contact rating so no rewiring or adapters are needed. Contactors are a frequent failure point — burned or pitted contacts cause no-cool calls, buzzing, or compressors that won't engage — and this OEM unit returns your system to factory performance. Installation is moderate in difficulty and typically takes 20 to 30 minutes: shut off power, photograph and transfer the wiring one terminal at a time, then secure the new contactor in place. Professional installation is recommended for safety. Order before 3PM CST and your part ships the same day, minimizing downtime during cooling season.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model C50A403521.\u003c\/p\u003e\n\u003ch2\u003eShipping\u003c\/h2\u003e\n\u003cp\u003eSame-day shipping before 3 PM CST. 30-day returns on uninstalled parts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":62964415005043,"sku":"carrier-contactor-c50a403521","price":34.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-contactor-c50a403521","provider":"National HVAC Parts","version":"1.0","type":"link"}