{"product_id":"carrier-c50a203562-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A203562","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C50A203562\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A203562\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V signal used by your thermostat, control board, contactor coil, and all low-voltage safety circuits. When it fails, \u003cem\u003enothing\u003c\/em\u003e responds — the thermostat goes dark, the system won't call for heating or cooling, and no fault codes are generated because the control circuit itself has lost power. Replaces OEM part numbers \u003cstrong\u003eHT01BD236\u003c\/strong\u003e and \u003cstrong\u003eHT01BD702\u003c\/strong\u003e.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | Industry-standard footprint | Factory-matched impedance and thermal protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers from Carrier are wound to exact VA and impedance tolerances, protecting downstream control boards from voltage sag or spike. Generic units often run under-rated VA, leading to nuisance trips or premature board failure.\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 beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or terminal connectors. Verify 24V output at secondary terminals before reconnecting the control harness. Always photograph existing wiring before disconnecting.\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\u003eC50A203562\u003c\/strong\u003e commercial packaged rooftop unit. Cross-references OEM part numbers HT01BD236 and HT01BD702. Confirm your unit's control voltage requirement and VA rating on the data plate before ordering. Our parts specialists are available to verify fitment — order with confidence and get back up and running today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909712662899,"sku":"CARRIE-C50A203562-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909712695667,"sku":"CARRIE-C50A203562-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_292a704d-7663-466b-91d4-ac2a6280bb0c.jpg?v=1782940365","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a203562-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}