Resideo - Honeywell Home AT175F1023 Circuit Breaker Transformer

The AT175F1023 Circuit Breaker Transformer from Resideo Honeywell Home delivers reliable power for heating and cooling control systems. With a primary voltage of 120/208/240 VAC and a 24 VAC secondary, this transformer supports standard thermostat and control panel applications at 60 Hz and a 75 VA power rating. Built for durability, it includes a mounting foot and metal end bell in a compact footprint, making it easy to install in tight control enclosures.

Whether upgrading an old control system or adding a new thermostat/relay arrangement, this UL and CSA approved transformer ensures safe, compliant operation. The AT175F1023 is designed to handle typical temperature rise from -20 to 105°F, with precise voltage delivery for consistent performance.

• Primary Voltage: 120/208/240 VAC
• Secondary Voltage: 24 VAC
• Frequency: 60 Hz
• Power Rating: 75 VA
• Temperature Rise: -20 to 105°F
• Enclosure: Metal end bell with mounting foot
• Dimensions: 2-3/16 in W × 3-15/16 in D × 3-3/16 in H
• Approval: UL, CSA
• Application: Heating/Cooling Control System