Trane SFTRR40VA Multi-Tap Control Transformer 120/208/240V to 24V 40VA

The Trane SFTRR40VA is a genuine OEM step-down control transformer designed to power the low-voltage control circuits in Trane and American Standard HVAC systems. It converts high-voltage incoming power (120V, 208V, or 240V) down to the 24V AC required to operate thermostats, contactors, relays, and integrated furnace or air handler control boards.

Key Features:

• Multi-Tap Primary Input: Supports 120V, 208V, and 240V primary connections for maximum installation flexibility across residential and light commercial applications
• 24V Secondary Output: Delivers the industry-standard low voltage required by modern HVAC control and safety components
• 40VA Power Rating: Higher capacity than standard 35VA models, providing stable power delivery in systems with added accessories such as humidifiers or electronic air cleaners
• 50/60 Hz Compatible: Works with both 50 Hz and 60 Hz electrical systems
• Wire Lead Termination: Pre-attached wire leads simplify installation and field wiring
• Genuine OEM Part: Manufactured by Trane / American Standard for guaranteed fit and performance

Cross-Reference / Replaces OEM Part Numbers: TRR00201, TRR00214, TRR00464, TRR00626, TRR00646, TRR00676, TRR00885, TRR00888, TRR00187, TRR00150, TRR01250, TRR02193, TRR00466

Installation Note: This transformer includes multiple primary tap wires corresponding to each supported input voltage. Connect only the wires matching your supply voltage and cap all unused leads with wire nuts to prevent short circuits.