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Honeywell AT72 Transformer

Transformer
AT72

24V control circuit step-down transformer designed to power any 24V control system, including thermostats, gas valves and relays.

• Override protection provided. 
• Color-coded leadwires for primary connections. 
• Energy limiting, meets NEMA Standard DC20-1992. 
• Transformer is marked NEMA Type D. 
• Meets 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)(Primary Voltage)(Secondary Voltage)(Output)(Primary) (inch)(Secondary) (inch)
AT72D10064 x 4 in. plate-mounted, protruding into junction box.NEMA type D3 7/32 in. high x 2 7/32 in. wide x (1 1/16 into plate x 2 in. above plate) deep120 Vac26.5 V.O.C.24 Vac at 40 VA9 in. leadwires(2) screw terminals
AT72D11884 x 4 in. plate mounted without protruding into junction box.NEMA type D3 7/32 in. high x 2 7/32 in. wide x 2 15/16 in. deep120 Vac26.5 V.O.C.24 Vac at 40 VA9 in. leadwires9 in. leadwires
AT72D1683Can be foot mounted, plate mounted on 4 x 4 in., 4 in. octagon, or 2 x 4 in. electrical boxes (transformer all above plate or 3/4 above plate); or clamp mounted via a junction box knockout.NEMA type D3 7/32 in. high x 2 7/32 in. wide x 3 1/16 in. deep120 Vac26.5 V.O.C.24 Vac at 40 VA9 in. leadwires(2) screw terminals
AT72D1691Can be foot mounted, plate mounted on 4 x 4 in., 4 in. octagon, or 2 x 4 in. electrical boxes (transformer all above plate or 3/4 above plate); or clamp mounted via a junction box knockout.NEMA type D3 7/32 in. high x 2 7/32 in. wide x 3 1/16 in. deep208 Vac, 240 Vac26.5 V.O.C.24 Vac at 40 VA9 in. leadwires(2) screw terminals
Temperature Rating: -20 F to +105 F (-29 C to +41 C)
Frequency: 60 Hz
Approvals:  
Canadian Standards Association: Certified
N.E.C. NEC Approved
Underwriters Laboratories Inc. UL Component Recognized
Electrical Ratings (Primary Voltage): 120 Vac
Electrical Ratings (Secondary Voltage): 26.5 V.O.C.
Electrical Ratings (Output): 24 Vac at 40 VA
Electrical Connections (main), Primary (inch): 9 in. leadwires
NEMA Rating: NEMA type D


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