{"product_id":"carrier-c50a202761-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A202761","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model C50A202761\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier C50A202761\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V AC signal required to power your thermostat, contactor coil, control board, and all low-voltage safety circuits. When this transformer fails — due to a short in the control circuit, a blown internal fuse, or simple age — absolutely nothing responds: the thermostat goes dark, the system won't energize, and no components will operate. Replacing this transformer is typically the first diagnostic step when the entire low-voltage control circuit goes dead.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | OEM part number HT01BD236 | Factory-matched output voltage for reliable thermostat and contactor operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact factory VA and voltage specifications. Generic transformers often run at reduced VA output, causing voltage sag under load that can trigger nuisance lockouts, damage control boards, or fail to fully pull in the contactor coil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter to verify 24V output after installation. Label and photograph all wiring connections before disconnecting the old transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. 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 for Carrier model \u003cstrong\u003eC50A202761\u003c\/strong\u003e commercial packaged rooftop units. Verify primary voltage and VA rating on your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment prior to purchase — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909715743091,"sku":"CARRIE-C50A202761-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909715775859,"sku":"CARRIE-C50A202761-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_7e58e6c5-068e-4637-a7ea-0e10b26949d7.jpg?v=1782940336","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a202761-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}