White Rodgers 40VA HVAC Transformer

White Rodgers 40VA HVAC Transformer

The 6WU91 White-Rodgers 40VA HVAC Transformer (90-T40F3) is an open-style Class 2 control transformer designed to step down 120/208/240V AC to a 24V AC secondary for common HVAC and refrigeration control circuits. With foot mounting and wire-lead primary/secondary connections, it’s a solid fit for control panels and equipment where you want a straightforward, serviceable transformer setup.

Country of Origin
China (subject to change)

Key Features / Specifications

• Model / Part Number: 6WU91 / 90-T40F3
• Brand: White-Rodgers
• Product Type: HVAC control transformer (Open Class 2)
• Primary Voltage: 120V AC / 208V AC / 240V AC
• Secondary Voltage: 24V AC
• Power Rating: 40 VA
• Frequency: 60 Hz
• Phase: Single
• Mounting: Foot mount
• Connection Type:
  • Primary: Wire lead
  • Secondary: Wire lead
• Enclosure Style: Open
• Enclosure Finish: No finish
• NEMA Enclosure Rating: Not rated
• Protective Device: None (can be paired with breaker/fuse as needed)
• Overall Dimensions: 3.25" W × 2.75" H × 2.19" D
• Temperature Rise: 185°F
• Standards / Listing: UL Recognized (File No. E33334)
• UNSPSC: 39121001

Ideal For

• Supplying 24V control power for HVAC/R systems from 120/208/240V inputs
• Use with digital controllers, gas controls, ignition systems, motor actuators, staging controls, and other control circuits
• Applications where an open-style transformer and foot mount make servicing and installation easier
• Setups where you may want to add external circuit protection later (fuse/breaker)