The HS1F2AS is a non-ventilated Automation Transformer rated for hazardous locations as well as harsh industrial environments. Encapsulation and rugged UL Listed/NEMA Type 3R enclosures protect the transformer from dust, moisture and provide extra shock and vibration resistance. The transformers fully comply with the latest addition of the National electrical code for class I, division 2, group A, B, C and D locations when installed in compliance with NEC 501.100 (B). It is encapsulated with electrical grade silica and epoxy for industrial applications.