{"product_id":"carrier-c50a302562-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A302562","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C50A302562\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM replacement control transformer for the \u003cstrong\u003eCarrier C50A302562\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V signal used by your thermostat, contactor coil, and control board. When it fails, the entire low-voltage control circuit goes dead — your thermostat loses power, the system stops responding to calls for heating or cooling, and nothing turns on. If you're measuring 0V across your 24V terminals and your breaker hasn't tripped, a failed transformer is the most common cause. OEM part numbers \u003cstrong\u003eHT01BD236\u003c\/strong\u003e and \u003cstrong\u003eHT01BD702\u003c\/strong\u003e are interchangeable factory replacements for this application.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA capacity | 120V primary \/ 24V secondary | Factory-matched impedance and thermal protection | Replaces OEM part numbers HT01BD236 and HT01BD702\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and impedance specs for this unit. Undersized or off-spec generic transformers can overheat under contactor inrush loads, tripping the internal thermal cutoff and causing intermittent no-heat or no-cool faults that are difficult to diagnose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and confirm voltage is off before starting. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or terminal connectors. Label or photograph all low-voltage wiring before disconnecting. Match primary and secondary wire colors carefully on reinstall.\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\u003eC50A302562\u003c\/strong\u003e commercial packaged rooftop unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909704765811,"sku":"CARRIE-C50A302562-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909704798579,"sku":"CARRIE-C50A302562-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_c2e9d164-afb9-4229-8193-0618492b9b6a.jpg?v=1782940420","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a302562-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}