{"product_id":"carrier-c50a502051-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A502051","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD236 for Model C50A502051\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A502051\u003c\/strong\u003e commercial rooftop unit. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, contactor coils, and all low-voltage safety circuits. When the transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system refuses to respond to any commands, and no heating or cooling is possible until it is replaced.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary voltage | 24V secondary voltage | Class 2 insulation | Designed for continuous duty in commercial rooftop applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to Carrier's exact VA rating and insulation class, ensuring reliable 24V output under full control-circuit load. Generic transformers often underrate their VA capacity, causing thermal shutdown during peak demand and shortening the life of downstream components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before beginning. Tools needed: flathead and Phillips screwdriver, multimeter, wire nuts or terminal connectors. Verify 24V output with a multimeter after installation before restoring full system power. Always label or photograph existing wiring prior to disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship the same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eC50A502051\u003c\/strong\u003e commercial rooftop unit. Confirm primary voltage (120V) and VA rating (40VA) on your unit's data plate before ordering. If you are unsure of fitment, our HVAC parts specialists are available to verify compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909677142387,"sku":"CARRIE-C50A502051-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909677175155,"sku":"CARRIE-C50A502051-TRANSFORMER-HT01BD236-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01BD236_ccc831bd-130f-4f83-b489-2e0c34a91749.jpg?v=1782940557","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a502051-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}