Allen-Bradley 1497-B-Hxdx-3-N Industrial Control Transformer

The Allen-Bradley 1497-B-HXDX-3-N is an 80 VA control circuit transformer designed to supply clean, isolated 120 V AC control power from a 208 V, 60 Hz input in industrial controls. It lists a 208 V (60 Hz) primary and a 120 V (60 Hz) secondary, with a fuse-block option that supports two primary fuses and one secondary fuse for coordinated protection. Primary fuse size is 1.5 A at 240 V when both sides are protected, and secondary fuse size is 5 A at 24 V (per NEC). Inrush VA is specified as 338 VA at 85% of rated secondary voltage with a 40% power factor, reflecting how the device behaves during startup transients common in control circuits. The enclosure footprint measures 3-7/8 in. deep by 3.5 in. wide and 2-3/8 in. high, and the unit weighs about 4.5 lb, making it compact for panel mounting in demanding environments. This 3-N variant is part of Allen-Bradley’s 1497 family of general-purpose control transformers, frequently used to feed control coils, relays, contactors, and PLC I/O circuits from higher-voltage panels while keeping control circuitry isolated from power circuits.