{"product_id":"transformer-sftrr40va-genuine-oem-replacement-multi-tap-40va-control-transformer","title":"Transformer SFTRR40VA – Genuine OEM Replacement Multi-Tap 40VA Control Transformer","description":"\u003ch1 data-pm-slice=\"1 3 []\"\u003eTransformer SFTRR40VA – Genuine OEM Replacement Multi-Tap 40VA Control Transformer\u003c\/h1\u003e\n\u003cp data-pm-slice=\"1 3 []\"\u003eThe \u003cstrong\u003eSFTRR40VA\u003c\/strong\u003e is a versatile, high-capacity genuine OEM step-down transformer designed to power the low-voltage control circuits in a wide range of Trane and American Standard HVAC systems. This component is the electrical \"heart\" of your unit, converting high-voltage incoming power into the \u003cstrong\u003e24V\u003c\/strong\u003e required to operate thermostats, contactors, relays, and integrated furnace or air handler control boards.\u003c\/p\u003e\n\u003cp\u003eTechnically engineered for flexibility, the SFTRR40VA features \u003cstrong\u003emulti-tap primary leads\u003c\/strong\u003e, allowing it to be used in residential (120V) or commercial (208\/240V) applications. With an upgraded \u003cstrong\u003e40VA\u003c\/strong\u003e rating, it offers more \"headroom\" than standard 35VA models, ensuring stable power delivery even in systems with multiple accessories like humidifiers or electronic air cleaners. Its heavy-duty construction is designed to withstand the heat and vibration common within an HVAC cabinet, providing years of silent, hum-free operation.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features and Function:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMulti-Tap Input:\u003c\/strong\u003e Supports 120V, 208V, and 240V primary connections for maximum field versatility.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e24V Secondary Output:\u003c\/strong\u003e Provides the industry-standard low voltage for all modern HVAC safety and control components.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh 40VA Capacity:\u003c\/strong\u003e Delivers increased power output to prevent control board \"brownouts\" during high-demand cycles.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUniversal Foot Mount:\u003c\/strong\u003e Features a standard mounting bracket that aligns with most factory screw patterns for a quick swap.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details and Key Specifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e SFTRR40VA (Replaces TRR00187, TRR00551, TRR01729)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Trane \/ American Standard (Genuine OEM)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePart Type:\u003c\/strong\u003e Multi-Voltage Control Transformer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary Voltage:\u003c\/strong\u003e 120 \/ 208 \/ 240 VAC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSecondary Voltage:\u003c\/strong\u003e 24 VAC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 40VA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFrequency:\u003c\/strong\u003e 50 \/ 60 Hz\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 2.4 lbs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ \u003cstrong\u003eHVAC Depot Pro Tip: Wire Management is Key\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eWhen installing the SFTRR40VA, you will have multiple primary \"tap\" wires (usually White, Black, Red, and Orange). Only connect the wires that match your incoming voltage and \u003cstrong\u003esecurely cap off the unused leads\u003c\/strong\u003e with wire nuts. Leaving an unused high-voltage lead exposed inside the cabinet can cause a dangerous short circuit to the ground, potentially destroying your new transformer or the main control board.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference \u0026amp; Compatibility:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe SFTRR40VA is a direct OEM replacement for the following part numbers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOEM Numbers:\u003c\/strong\u003e TRR00187, TRR00150, TRR01250, TRR02193\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAftermarket:\u003c\/strong\u003e Packard TF40, Mars 50203, Jard 4031F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eExtensive Model Compatibility List:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTrane Air Handlers:\u003c\/strong\u003e TWE, TEE, and GAM series units.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTrane Heat Pumps \u0026amp; ACs:\u003c\/strong\u003e 2TTA, 2TWA, 4TTA, 4TWA series condensers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAmerican Standard Heritage \u0026amp; Allegiance:\u003c\/strong\u003e Various residential split-system units.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Service First","offers":[{"title":"Default Title","offer_id":52451525886315,"sku":"SFTRR40VA","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/SFTRR40VA.jpg?v=1775078394","url":"https:\/\/tophvacparts.com\/products\/transformer-sftrr40va-genuine-oem-replacement-multi-tap-40va-control-transformer","provider":"HVAC Parts and Equipment Depot Open To Homeowners and Contractors","version":"1.0","type":"link"}