{"product_id":"carrier-yac48110yac203at-transformer-fnyqxl","title":"OEM Carrier Control Transformer 50VA 120\/240-24V — YAC48110YAC203AT","description":"\u003ch1\u003eOEM Carrier Control Transformer 50VA 120\/208\/240V–24V for Model YAC48110YAC203AT\u003c\/h1\u003e\u003cp\u003eThe \u003cstrong\u003eCarrier P201-35150\u003c\/strong\u003e is the factory-specified step-down control transformer for the \u003cstrong\u003eYAC48110YAC203AT\u003c\/strong\u003e packaged unit. Its job is to reduce incoming line voltage — 120, 208, or 240 VAC — down to a safe 24V for the low-voltage control circuit, powering the thermostat, control board, contactor coil, and all system safeties. When this transformer fails, the entire control circuit goes dead: the thermostat goes blank, the system won't respond to any calls, and absolutely nothing turns on. If your unit has blown a 3A fuse on the board repeatedly, a shorted transformer is the most common cause.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50 VA rating | Primary: 120 \/ 208 \/ 240 VAC multi-tap | Secondary: 12 \/ 24 VAC | 60 Hz single phase | CSA listed | Dimensions: 3.8\"L × 3.1\"W × 2.2\"H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM Carrier\/Totaline unit is wound to exact factory VA and voltage tolerances. Under-rated generic transformers run hot, trip on thermal overload, and shorten control board life — the savings aren't worth it on a 50VA part.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Line voltage is present. Always shut off power at the disconnect AND the breaker before servicing. Tools needed: multimeter (verify 0V before touching wires), 1\/4\" nut driver, needle-nose pliers. Label all wires before disconnecting. Secondary wires (24V side) connect to C and R on the control board.\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 Direct OEM replacement for Carrier model \u003cstrong\u003eYAC48110YAC203AT\u003c\/strong\u003e. Part number P201-35150 is a Carrier\/Totaline Factory Authorized Part. Confirm your unit's data plate lists a 50VA, 120\/208\/240V primary transformer before ordering. Need fitment verification? Our team confirms compatibility before you buy — no guesswork.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640191013235,"sku":"CARRIE-YAC48110YAC203AT-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640191046003,"sku":"CARRIE-YAC48110YAC203AT-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_7e0f8647-6b2a-49fb-ad7d-e4b67feba607.jpg?v=1775025893","url":"https:\/\/nationalhvacparts.com\/products\/carrier-yac48110yac203at-transformer-fnyqxl","provider":"National HVAC Parts","version":"1.0","type":"link"}