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Honeywell AT20/AT40 Universal Stripped-Down Transformer

Universal Stripped-Down Transformer
AT20/AT40

Power a 24V control system; for direct mounting, or horizontal or vertical foot-mounting.

• Channel frame mounting feet and slots allow for the three mounting positions. 
• Color-coded leadwires for primary connections. 
• Overload protection provided. 
• Energy limiting, meet NEMA DC20-1992 Standard. Marked NEMA Type B. 
• Meet NEC Class 2 not wet, Class 3 wet and U.L. 1585 requirements. 
• Mount within proper enclosure.

Select a link under the "item" tab below to order.

Cat #MountingNEMA Rating(inch)Prot Note(Primary Voltage)(Secondary Voltage)(Output)(Primary) (inch)(Secondary) (inch)
AT20A1123Channel Frame Mounting allows for Direct, Horizontal, or Vertical Foot mounting.NEMA type B2 in. high x 2 1/4 in. wide x 1 7/8 in. deep*120 Vac26.5 V.O.C.24 Vac at 19 VA9 in. color coded primary and secondary leadwires9 in. color coded primary and secondary leadwires
Temperature Rating: -20 F to +105 F (-29 C to +41 C)
Frequency: 60 Hz
Approvals:  
Canadian Standards Association: Certified
Underwriters Laboratories Inc. UL Component Recognized
Electrical Connections (main) Primary (inch): 9 in. color coded primary and secondary leadwires
Electrical Connections (main) Secondary (inch): 9 in. color coded primary and secondary leadwires
Mounting: Channel Frame Mounting allows for Direct, Horizontal, or Vertical Foot mounting


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