{"product_id":"carrier-c50a302052-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A302052","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V to 24V for Model C50A302052\u003c\/h1\u003e\u003cp\u003eThis OEM replacement control transformer (part# \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified unit for the \u003cstrong\u003eCarrier C50A302052\u003c\/strong\u003e packaged rooftop system. The transformer steps down line voltage from 120V to the 24V signal required to power the thermostat, control board, contactors, and all low-voltage safety circuits. When this component fails, the entire control circuit loses power — resulting in a completely unresponsive system, a blank thermostat display, or tripped secondary fuses with no obvious cause.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA output rating | Primary: 120V | Secondary: 24V | Class 2 transformer | Matches OEM mounting footprint and terminal configuration for drop-in installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM part (HT01BD236), wound to exact factory VA and voltage specifications. Generic transformers often run under-rated VA, causing the secondary fuse to blow repeatedly under normal load — a common and frustrating misdiagnosis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage before handling. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all low-voltage wires before disconnecting and confirm the secondary fuse is intact before condemning the transformer.\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\u003eC50A302052\u003c\/strong\u003e commercial packaged rooftop unit. Verify primary input voltage and VA rating on your unit's wiring diagram or data plate before ordering. If your thermostat is dark and your secondary fuse keeps blowing, this transformer is the most likely cause. Our fitment team is available to confirm compatibility before you order — same-day shipping means your system is back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909707649395,"sku":"CARRIE-C50A302052-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909707682163,"sku":"CARRIE-C50A302052-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_3190687b-ddfb-431a-b873-13e0d8018012.jpg?v=1782940402","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a302052-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}