Power Supplies

AT150F, AT175F

Product Bar End
Product Bar End

AT150F, AT175F

Class 2 Control Transformers with Breaker AT150F, AT175F

Class 2 Control Transformers with Breaker


The Honeywell Model AT150F and AT175F transformers provide power to nominal 24 VAC circuits in heating/cooling systems. Although the transformers are typically used in heating/cooling systems, they can be used in any application that does not exceed the load ratings. The transformers include a manual reset button for resetting the circuit breaker. They also meet NEC Class 2 "not wet" and Class 3 "wet" requirements and are UL listed under UL1585. These transformers can be foot or hub mounted.


(Wholesale customers, log in for your special pricing)

QtyModelDescriptionIn StockList PriceInternet Price
AT150F1022 50VA TRANS 120/208/240V C BRK In Stock52.5642.05
AT150F1030 50VA 208/277/480V TRANS CB In Stock54.7543.80
AT175F1023 75VA 120/208/240V TRANS CB In Stock82.1465.71
AT175F1031 75VA 208/277/480V TRANS CB In Stock82.1465.71


No accessories found
  • Multi-tap primary connections
  • Color-coded lead wires
  • Manually resettable circuit breaker
  • Meets NEC Class 2 "not wet" and Class 3 "wet" transformer requirements

Primary Voltage:120/208/240 VAC, 208/277/480 VAC

Secondary Voltage:24 VAC

Frequency:60 Hz

VA Rating:AT150F: 50 VA, AT175F:75 VA

Mounting:Foot or hub

Conduit Connection:1/2" male NPT

Lead Wires:9" (22.8 cm), color coded

Weight:3 lb (1.36 Kg)

Approvals:UL1585, UL5085-3 File #E14881, CSA File #LR95329-18 NEC Class 2 "not wet", Class 3 "wet"

Warranty:1 year