The AT72D is a multi-mounting, stepdown transformer for use in 24 Vac control systems. It is listed by Underwriters Laboratories Inc. and Canadian Standards Associations and meets NEC Class 2 not wet Class 3 wet requirements. It also complies with 24 V NEMA Type D requirements as specified by NEMA Standard ST2-1979.
AT72D mounting options include foot mounting. plate mounting; plate mounting (transformer all above plate, or 3/4 above plate) for use in 4 x 4 in., 4 in octagon, and 2 x 4 in. electrical boxes; and clam mounting via a junction box knockout.
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