{"product_id":"carrier-c50a902064-transformer-h301d7","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A902064","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD702 for Model C50A902064\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer (part number \u003cstrong\u003eHT01BD702\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A902064\u003c\/strong\u003e commercial packaged unit. The transformer converts 120V primary line voltage to the 24V secondary signal voltage that powers your thermostat, control board, contactor coils, and all low-voltage safety circuits. When the transformer fails, the entire control circuit goes dark — nothing works. Symptoms include a completely unresponsive thermostat, a system that won't heat or cool, or a tripped secondary fuse caused by a shorted control wire.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Ring terminal or quick-connect leads | Factory-matched impedance and thermal overload protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer built to exact VA rating and winding specifications. Generic replacements often run under-rated VA capacity, causing the transformer to overheat and fail prematurely under normal control-circuit loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or terminal connectors. Verify 24V output after installation before restoring the thermostat connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock and ships same business day from our NationalHVACParts.com warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC50A902064\u003c\/strong\u003e commercial rooftop\/packaged unit. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering. Our fitment team is available to confirm compatibility before you buy — same-day shipping on all in-stock OEM parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909662396787,"sku":"CARRIE-C50A902064-TRANSFORMER-HT01BD702","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909662429555,"sku":"CARRIE-C50A902064-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_d6461857-cd3d-40e9-9c5b-4f0f18496b53.jpg?v=1782940707","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a902064-transformer-h301d7","provider":"National HVAC Parts","version":"1.0","type":"link"}