{"product_id":"carrier-c50a502064-transformer-h301d7","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A502064","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD702 for Model C50A502064\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01BD702\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eC50A502064\u003c\/strong\u003e commercial packaged unit. The control transformer steps down line voltage (120V) to the 24V signal required by your thermostat, control board, contactor coils, and all low-voltage safety circuits. When this transformer fails, the entire control circuit goes dark — the thermostat shows no power, the system won't respond to any commands, and nothing operates at all.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Step-down configuration | Factory-matched OEM tolerances for reliable low-voltage control circuit performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM transformer, engineered to exact VA and voltage tolerances for the C50A502064. Generic transformers often use undersized windings that overheat under full low-voltage load, leading to premature failure and potential control board damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the breaker before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (verify 0V before touching wiring). Label all low-voltage wires before disconnecting. A blown fuse on the secondary side often indicates a downstream short — inspect wiring before installing the new transformer.\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 Engineered for the Carrier \u003cstrong\u003eC50A502064\u003c\/strong\u003e commercial rooftop\/packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering. Our parts specialists are available to confirm fitment — reach out before you order if you have any questions. In stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909675962739,"sku":"CARRIE-C50A502064-TRANSFORMER-HT01BD702","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909675995507,"sku":"CARRIE-C50A502064-TRANSFORMER-HT01BD702-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-HT01BD702_73efc206-228b-4f0e-b308-aaf75092ac8a.jpg?v=1782940567","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a502064-transformer-h301d7","provider":"National HVAC Parts","version":"1.0","type":"link"}