{"product_id":"carrier-c50a504052-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A504052","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model C50A504052\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier C50A504052\u003c\/strong\u003e commercial packaged unit. The transformer steps down 120V line voltage to 24V to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When it fails, the result is total system non-response: the thermostat goes dark, nothing energizes, and no heating or cooling function is available. A failed transformer is often misdiagnosed as a bad thermostat or control board, making correct part identification critical before replacing more expensive components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Class 2 control circuit transformer | OEM part number HT01BD236 | Factory-matched output for Carrier low-voltage control systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer meets Carrier's exact VA rating and insulation class requirements. Undersized or off-tolerance generic transformers can overheat under load, trip internal thermal fuses, or damage sensitive control boards drawing peak current.\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. Label all low-voltage wiring before removal. Verify 24V output at secondary terminals after installation before restoring full power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships the 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\u003eC50A504052\u003c\/strong\u003e commercial rooftop\/packaged unit. Verify primary voltage (120V) and VA rating on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — no guesswork, no return hassle.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909670261107,"sku":"CARRIE-C50A504052-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909670293875,"sku":"CARRIE-C50A504052-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_7bd458cc-9db7-42ed-8f5e-9fe7fe25a861.jpg?v=1782940620","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a504052-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}