White-Rodgers S84A-410 Control Transformer

White-Rodgers S84A-410 Control Transformer is a compact, UL-listed HVAC control transformer that steps down 120 V AC mains to a stable 25 V AC for low-voltage control circuits. Rated for 40 VA at 60 Hz, this transformer delivers reliable power for thermostats, relays, and control modules in commercial and residential systems.

With Insulation Class 2 construction, it ensures safe operation inside typical control panels. The unit uses 10 in. line leads and screw-type load terminals, and it mounts on a standard mounting plate for easy installation in tight spaces. Built to endure temperatures up to 150°F, it delivers consistent performance in varying environments.

• Primary Voltage: 120 V AC
• Secondary Voltage: 25 V AC
• Frequency: 60 Hz
• Power Rating: 40 VA
• Insulation Class: II
• Terminal Type: 10 in. line leads; screws (Load)
• Mounting: Mounting plate
• Certification: UL listed
• Ambient Temperature Rating: 150°F