Skip Ribbon Commands
Skip to main content
SharePoint
Login or Register to view pricing and order.
Item 7 Of 12
40VA, universal mount (foot, plate, clamp) 120Vac transformer

AT72D1683/U

40VA, universal mount (foot, plate, clamp) 120Vac transformer

  • Product Info
  • Literature

Overview

Resideo 40 VA transformers power 24V systems including thermostats, gas valves and relays.

Features

  • Override protection
  • Color-coded lead wires for primary connections
  • Energy limiting and meets NEMA Standard DC20-1992
  • Transformers are marked NEMA Type D enclosure
  • Meets NEC Class 2 not wet, Class 3 wet and UL 1585 requirements

Product Specifications

Dimensions (in.)
3 7/32 in. high x 2 7/32 in. wide x 3 1/16 in. deep
Dimensions (mm)
81.8 mm high x 56.4 mm wide x 77.8 mm deep
Temperature Range (F)
-20 F to +105 F
Temperature Range (C)
-29 C to +41 C
Item Type
Product
Mounting
Can 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.
Electrical Ratings
Primary voltage--120 Vac; Secondary voltage--26.5 V.O.C.
Frequency
50 Hz; 60 Hz
Approvals, Underwriters Laboratories Inc.
UL Component Recognized.
Approvals, Canadian Standards Association
Certified
Tradeline Value
Super Tradeline
NEMA Rating
NEMA type D
Approvals, N.E.C.
NEC Approved.
Electrical Connections (Primary)(in.)
9 in. leadwires
Electrical Connections (Primary)(mm)
229 mm leadwires
Electrical Connections (Secondary)(in.)
(2) screw terminals
Electrical Connections (Secondary)(mm)
(2) screw terminals
Electrical Ratings, Output
24 Vac at 40 VA