{"product_id":"carrier-c50a203052-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A203052","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C50A203052\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part# \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier C50A203052\u003c\/strong\u003e commercial packaged unit. The transformer steps down 120V line voltage to the 24V signal voltage required to power the thermostat, control board, contactors, and all low-voltage safety circuits. When this component fails, the entire control system goes dark — thermostats go blank, no heating or cooling stage will energize, and the unit appears completely dead despite having line power. It is one of the first components to check during a no-response diagnostic.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V | Secondary: 24V | OEM part number HT01BD236 | Factory-matched impedance and thermal protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound and tested to Carrier's exact VA rating and insulation class. Undersized or off-tolerance generic transformers can overheat under full control-circuit load, tripping the internal thermal fuse and leaving the system down again within weeks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power at the breaker before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Always label and photograph all wiring before removal. Verify 24V output with a multimeter before closing the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. 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\u003eC50A203052\u003c\/strong\u003e commercial rooftop\/packaged unit. Confirm the 120V primary and 24V\/40VA secondary ratings on your unit's existing transformer or data plate before ordering. Our parts specialists are available to verify fitment — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909714563443,"sku":"CARRIE-C50A203052-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909714596211,"sku":"CARRIE-C50A203052-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_8146f0b3-564c-4eb2-8952-bb0dc59b8fda.jpg?v=1782940346","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a203052-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}