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Honeywell AT40A1121

120 VAC to 24 VAC Transformer


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The Honeywell AT40A1121 transformer is used to power a 24 volt system such as the Honeywell TrueUV Surface Treatment System.  It can be direct mounted, or horizontally or vertically foot mounted.

  • Channel frame mounting feet and slots allow for the three mounting positions
  • Color-coded lead wires for primary connections
  • Overload protection provided
  • Energy limiting, meets NEMA DC20-1992 Standard (NEMA Type D)
  • Meets NEC Class 2 when dry, NEC Class 3 when wet and UL 1585 requirements

Electrical Output
24 Vac at 40 VA
Electrical Connection
9 Inch Leads
Operating Temperature
-20 to 105 °F
2 5/8 Inches
2 3/16 Inches
2 3/32 Inches
120 Volts
60 Hz

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