Schneider Electric 5S1F Transformer

Schneider Electric's Square D 5S1F transformer is a dry-type encapsulated single-phase distribution transformer rated at 5 kVA. It accepts a primary voltage of 240 to 480 V and provides a 120/240 V secondary, making it suitable for stepping down higher-voltage service to feed control panels, lighting circuits, and low-voltage equipment in commercial or industrial installations, including electrical rooms, service panels, and equipment enclosures where a compact, pre-engineered step-down solution is needed. This resin-encapsulated unit is designed for 60 Hz operation and is UL/cULus listed, with a 13B insulation class and a 115°C rise rating under Trade Agreement Act (TAA) conditions. Its impedance is 3.58% at rated load, influencing short-circuit current availability and voltage regulation within a distribution scheme. As part of the 5S1F family, it delivers a compact, reliable solution for converting 240/480 V to 120/240 V in a single-phase footprint.