Square D 75T3H Transformer

Square D EXN75T3H is a 75 kVA, three-phase, dry-type transformer that steps a 480 V primary down to a 208Y/120 V secondary for indoor distribution. It operates at 60 Hz with a 480 V delta primary and a 208Y/120 V secondary, and is configured for a NEMA 2 indoor enclosure to suit standard commercial and industrial installations. This DOE 2016 energy-efficient design delivers lower no-load losses than older models while maintaining dependable service for 3‑phase loads, and it carries a 150°C rise rating for insulation. Ideal for situations where 120/208 V service is required from a 480 V feeder, it supports applications such as panelboard feed, lighting circuits, motor control centers, and other equipment in commercial or light industrial settings, providing isolated, safe power conversion from a widely used utility voltage.