{"product_id":"carrier-contactor-c50a503521","title":"OEM Carrier Contactor Replacement C50A503521 for Model C50A503521","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Contactor Replacement C50A503521 for Model C50A503521\u003c\/h1\u003e\n\u003cp\u003eReplace a failing switch with this genuine OEM Carrier contactor (C50A503521), the component that delivers line voltage to your unit's compressor and outdoor fan motor on a call for cooling. The contactor's coil energizes to close the contacts and power the high-draw loads; arcing eventually pits and burns those contacts, causing no-cool conditions, humming, intermittent operation, or contacts that weld shut. Engineered as a direct OEM replacement for Carrier model C50A503521, it matches the original coil voltage, pole count, and amperage so your system runs safely and exactly as the factory intended. Installation is a moderate DIY repair: cut power at the breaker and disconnect, photograph the wiring, move leads one at a time onto the new contactor, and secure it in place. Most jobs take 20-30 minutes with a screwdriver and nut driver, and you must verify power is off before starting. Authentic OEM construction delivers reliable switching and long-term durability. We stock this contactor and ship same-day on orders placed before 3PM CST.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model C50A503521.\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":62964094566771,"sku":"carrier-contactor-c50a503521","price":39.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-contactor-c50a503521","provider":"National HVAC Parts","version":"1.0","type":"link"}