Overview
The Honeywell AT150F1030 is a 50VA control transformer designed to provide reliable power to 24VAC circuits in HVAC, building automation, and industrial control applications. This circuit breaker transformer handles input voltages of 208V, 277V, and 480VAC, with 27.5VAC secondary output. The unit is ideal for systems with predictable, uniform loads and serves as a drop-in replacement for equivalent control transformer applications.
Key Features
- Multi-voltage capability handling 208/277/480 volts with 50 VA power delivery
- Manual reset button for convenient operation and added safety
- Color-coded leadwires for primary connections and screw terminals for secondary connections
- Available in foot mounted, plate mounted, clamp mounted, or panel mounted configurations with metal end bells
- Meets NEC Class 2 requirements and Underwriters Laboratories Standard UL 1585, identified for Class 2 not wet and Class 3 wet service
Technical Specifications
- Primary Voltage: 208/277/480VAC
- Secondary Voltage: 27.5VAC
- Power Rating: 50 VA
- Frequency: 60 Hz
- Lead Wire Length: 9 inches (both primary and secondary)
- Protection: Integrated circuit breaker with manual reset
- Mounting: Multi-mount (foot, plate, clamp, panel)
- Certifications: UL 1585, NEC Class 2/Class 3 compliant
- Construction: Metal end bells
- Part Number: AT150F1030
Typical Applications
The AT150F1030 provides power to 24VAC circuits in heating/cooling control systems and is intended for use in systems with predictable, uniform loads. Although typically used in heating/cooling systems, it can be used in any application that does not exceed the load ratings. Common installations include:
- HVAC thermostat and control systems
- Building automation and energy management
- Low-voltage power distribution in commercial facilities
- Industrial heating and process control
- Emergency and standby power conditioning
Compatibility & Replacements
Compatible With
- Standard 24VAC control circuits and systems
- Honeywell heating and cooling control modules
- Building management systems requiring 24VAC power
- Industrial automation and HVAC equipment
- Systems requiring NEC Class 2 or Class 3 compliance
Replaces / Drop-In Replacement For
The Honeywell Model AT150F transformers are comparable to the AT175F transformer. Verify compatibility with your specific control system before ordering to ensure proper voltage and load ratings.
Works With
- Honeywell Resideo control systems and thermostats
- UL-listed 24VAC control circuits and equipment
- Standard industrial control panels and enclosures
- Multi-voltage building automation platforms




