{"product_id":"carrier-c50a503051-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A503051","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C50A503051\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eC50A503051\u003c\/strong\u003e commercial rooftop unit. The transformer steps down 120V line voltage to 24V AC, powering the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, absolutely nothing in the control system responds: the thermostat goes blank, the unit won't energize, and no fault codes appear because the board itself has no power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BD236 | Factory-matched for C50A503051 control circuit load requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage specifications for the C50A503051 platform. Undersized generic units can overheat, trip internal thermal protection, or cause intermittent control failures that are difficult to diagnose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Confirm 24V output after installation before restoring full power. Label and photograph all wiring connections prior to removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Ships same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC50A503051\u003c\/strong\u003e commercial packaged rooftop unit. Always verify primary input voltage and VA rating on your unit's data plate before ordering — mismatched VA ratings can damage downstream control components. Our fitment team is available to confirm compatibility before you purchase. Order today and your part ships the same business day.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909673242995,"sku":"CARRIE-C50A503051-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909673275763,"sku":"CARRIE-C50A503051-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_596e296c-0992-4208-9c33-5f87a2451294.jpg?v=1782940592","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a503051-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}