{"product_id":"carrier-c50a602764-transformer-h301d7","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A602764","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD702 for Model C50A602764\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01BD702\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A602764\u003c\/strong\u003e commercial packaged unit. The transformer steps down 120V line voltage to the 24V AC signal required by your thermostat, control board, contactor coil, and all low-voltage control components. When this part fails, the entire control circuit loses power — the result is a completely unresponsive system with no thermostat communication, no contactor pull-in, and no heating or cooling output whatsoever.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA output rating | Primary: 120V AC | Secondary: 24V AC | Hardwired lead connections | Compact form factor for panel mounting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer matched to factory specifications for the C50A602764. Generic transformers often lack proper VA rating tolerance, leading to premature failure under full control-circuit load — particularly in commercial applications where multiple zone valves or relays share the 24V circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, wire nuts. Always verify 0V at primary leads before handling. Label all wiring before disconnecting the old unit.\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 as a direct OEM replacement for the \u003cstrong\u003eCarrier C50A602764\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering. Our fitment specialists are available to confirm compatibility before you purchase. Order today — this part ships same business day.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909665739123,"sku":"CARRIE-C50A602764-TRANSFORMER-HT01BD702","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909665771891,"sku":"CARRIE-C50A602764-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_1ccf49ca-385c-4c7f-98ba-e53eadda99b7.jpg?v=1782940659","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a602764-transformer-h301d7","provider":"National HVAC Parts","version":"1.0","type":"link"}