{"product_id":"carrier-c50a405052-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A405052","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD236 for Model C50A405052\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer for the \u003cstrong\u003eCarrier C50A405052\u003c\/strong\u003e packaged unit, supplied under OEM part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e. The transformer steps down 120V line voltage to the 24V AC signal required to power the control board, thermostat, contactor coil, and all low-voltage safety circuits. When the transformer fails, the entire control circuit goes dead — your thermostat goes blank, the system refuses to respond to any call for heating or cooling, and no fault codes are displayed because the board itself has no power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage: 120V AC | Secondary voltage: 24V AC | VA rating: 40VA | Factory-matched OEM tolerances for the C50A405052 control circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer (HT01BD236) is wound and insulated to Carrier's exact factory specifications. Generic transformers frequently carry under-rated VA windings, leading to premature thermal cutout trips and repeat failures — especially under high-demand control circuit 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, wire stripper, multimeter. Always confirm 0V at primary terminals before handling. Label or photograph all low-voltage wiring connections prior to removal.\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 and factory-specified for the \u003cstrong\u003eCarrier C50A405052\u003c\/strong\u003e commercial packaged unit. Always verify your unit's control circuit voltage (120V primary \/ 24V secondary) and VA rating on the 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":62909680222579,"sku":"CARRIE-C50A405052-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909680255347,"sku":"CARRIE-C50A405052-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_b2f74ba5-77d4-48e3-b208-6e5c4ea1d2e1.jpg?v=1782940537","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a405052-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}