{"product_id":"carrier-c50a505051-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A505051","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model C50A505051\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer (part# HT01BD236) is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A505051\u003c\/strong\u003e commercial rooftop unit. The transformer converts 120V line voltage down to the 24V signal voltage required to power the control board, thermostat, and all low-voltage system controls. When the transformer fails, the entire control circuit loses power — resulting in a completely unresponsive system, a blank thermostat display, or repeated blown 3-amp fuses on the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | Factory-matched impedance | Compatible with multi-stage control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and impedance specifications for this unit. Undersized or off-spec generic transformers overheat under full control-circuit load, blowing fuses and damaging connected boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect before servicing. Tools needed: flathead and Phillips screwdriver, multimeter, wire nuts or spade connectors. Verify incoming voltage before connecting. Label all wires prior to disconnecting the original 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 C50A505051 commercial rooftop unit. Always confirm your existing transformer's VA rating and primary\/secondary voltages match your unit's data plate specifications before ordering. Our parts team is available to verify fitment — just reach out before you buy. Order today for same-day shipping.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909668786547,"sku":"CARRIE-C50A505051-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909668819315,"sku":"CARRIE-C50A505051-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_d197371d-0ae4-4c63-bfbd-aad08e103c4c.jpg?v=1782940631","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a505051-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}