Automation Transformers are non-ventilated, 50 VA to 45 kVA encapsulated transformers rated for use in hazardous locations as well as harsh industrial environments. Encapsulation and rugged NEMA 3R enclosures protect the transformer from dust and moisture while providing extra shock and vibration resistance. UL Listed transformers fully comply with the latest edition of the National Electrical Code for Class I, Division 2, Group A-D locations when installed in compliance with NEC 501.100(B).