Energy efficient dry-type transformers 600 Volt Class, isolation type, single and three phase, 15 kVA through 500 kVA. Indoor and outdoor models available. UL-3R ventilated outdoor enclosures when used with optional weather shields (order separately). UL Class 220°C insulation system, 150°C temperature rise under full load. Terminal board connections and spacious wiring compartment. Single and three phase availability.