Resideo - Honeywell Home AT120B1028 General Purpose Transformer

General Purpose Transformer designed for dependable power in HVAC, control panels, and general electronics. The Resideo Honeywell Home AT120B1028 converts 120V AC input to a stable 24V AC output, delivering up to 20 VA at 60 Hz. This UL and CSA-listed unit meets safety standards while fitting compact enclosures. Built with a rugged metal end bell and a fixed 1/4 inch male quick-connect with color coded leadwires, it offers quick, secure wiring. Its footprint measures about 1-11/16" high, 3-3/16" wide, and 1-3/4" deep, with a foot-mount design for sturdy installation. The transformer is rated for temperature rise -20 to 105°F, making it suitable for a variety of environments. Use it to power low-voltage controls, relays, or door circuits with clean, consistent voltage and reliability.

• Electrical specs: Primary 120V AC, Secondary 24V AC, 60 Hz, 20 VA
• Construction: Rugged metal end bell; compact footprint: 1-11/16" x 3-3/16" x 1-3/4"
• Mounting: Foot mount for secure installation
• Connections: Fixed 1/4" male quick-connects with color coded leadwires
• Certifications: UL and CSA listed
• Operating range: Temperature rise -20 to 105°F