{"product_id":"carrier-c50a404052-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A404052","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C50A404052\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eC50A404052\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, contactor coil, and all low-voltage safety circuits. When this component fails, the entire control circuit goes dark — the thermostat shows no power, the system refuses to respond to any call for heating or cooling, and no fault codes appear because there is no voltage to generate them.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA output rating | 120V primary \/ 24V secondary | Class 2 control transformer | OEM part number HT01BD236 | Factory-matched for Carrier C50A404052\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer wound to exact factory tolerances. Generic transformers may carry insufficient VA capacity under full load, causing nuisance tripping of built-in breakers and premature failure — a common callback for technicians who substitute off-brand units.\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, multimeter (verify 0V before touching wires), wire stripper. Document or photograph all low-voltage wiring before disconnecting terminals. Secure all wire nuts fully after reinstallation and verify 24V output before closing the cabinet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against manufacturing defects. In-stock and ships same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eC50A404052\u003c\/strong\u003e commercial packaged rooftop unit. Always verify your unit's data plate confirms 120V primary input and 40VA 24V secondary requirement before ordering. Our parts specialists are available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909682385267,"sku":"CARRIE-C50A404052-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909682418035,"sku":"CARRIE-C50A404052-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_169df0a6-4f6e-4fc5-9ebb-7056c0780f72.jpg?v=1782940524","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a404052-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}