The Trane SFTRR40VA AC control transformer is a 40 VA step-down transformer designed to power HVAC control circuits. It accepts a primary voltage of 120/208/240 VAC and provides a 24 VAC secondary, with operation rated for 50/60 Hz. This is a genuine OEM replacement part commonly used in Trane packaged units and furnaces. Some listings note it ships with wire leads for easy installation.
