Schneider Electric SE 1S3FIS Dry Type Transformer

Schneider Electric’s Square D 1S3FIS dry-type transformer is a compact 1 kVA unit that accepts 240/480 VAC on the primary and provides 120/240 VAC on the secondary. Designed for dry indoor service, it suits control panels, automation cabinets, and other equipment that require 120/240 V from a higher-voltage supply. With a 1 kVA rating, it can support multiple control devices, such as contactors, relays, timers, and sensors, while delivering stable voltage to low-voltage loads in commercial or light-industrial environments. The transformer is part of Schneider Electric’s Square D portfolio, known for durable, code-compliant dry-type distribution transformers with straightforward installation. Its compact footprint and simple wiring make it a practical choice for space-constrained panels where a reliable step-down is needed to power 120/240 V control circuits from a 240/480 V service. Typical applications include machine control panels, process automation enclosures, building management system panels, and other low-voltage distribution tasks in commercial or light-industrial installations.