{"product_id":"carrier-c50a502561-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A502561 — HT01BD236","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C50A502561 — Part# HT01BD236\u003c\/h1\u003e\u003cp\u003eThis OEM replacement control transformer is the factory-specified part for the \u003cstrong\u003eCarrier C50A502561\u003c\/strong\u003e commercial rooftop unit. The transformer steps down 120V line voltage to 24V to power the entire control circuit — including the thermostat, contactor coils, gas valve, and control board. When the transformer fails, \u003cem\u003enothing works\u003c\/em\u003e: the thermostat goes blank, the system won't respond to any call for heating or cooling, and no fault codes will display. It is one of the first components to check when a unit is completely unresponsive.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | OEM part number HT01BD236 | Factory-matched wire leads and mounting footprint for direct drop-in replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances. Undersized or off-tolerance generic transformers can trip on overload, damage control boards, or cause erratic system behavior — particularly in commercial applications with multiple control loads.\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 screwdrivers, needle-nose pliers, multimeter, wire nuts or spade connectors. Always verify 24V output after installation before restoring full power to the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC50A502561\u003c\/strong\u003e commercial packaged rooftop unit. Confirm your unit's control voltage and VA requirement on the wiring diagram or data plate before ordering. Our fitment team is available to verify compatibility before you purchase — same-day shipping on all in-stock OEM parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909675438451,"sku":"CARRIE-C50A502561-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909675471219,"sku":"CARRIE-C50A502561-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_da2f286c-7eb7-41a5-a00b-e8220fca4f86.jpg?v=1782940575","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a502561-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}