NEMA 3R Medium Voltage Switchgear

• Outdoor Use – Designed to withstand rain, sleet, and external ice formation.

• Drip-Proof and Ventilated – Protects against falling rain and allows for natural ventilation.

• Enclosure Construction – Typically galvanized or painted steel, often with sloped roof and drip shields.

• Environmental Rating – Not dust-tight or hose-down rated, but suitable for outdoor substations and utility yards.

• Voltage Rating – Up to 38 kV

• Accessibility – May offer both front and rear access depending on configuration.

• Compliance – Built to ANSI C37.20.2, IEEE C37.04, and NEMA SG-6 standards.

• Protection Equipment – Uses vacuum circuit breakers, protection relays, and weatherproof accessories.