Explosionproof Tumbler Switch Control Station, Constructional Feature Explosionproof, Dust-Ignitionproof, Voltage Rating 120 to 277 VAC, Current Rating 20 Ampere, Contact Configuration 3-Way, Operator Type Rocker Arm Operated, Enclosure Material Zinc Electroplated Chromate Epoxy Powder Coated Malleable Iron, Actuator Material Nylon 6/6, Enclosure Class I Div 1 and 2 Group C D, Class II Div 1 and 2 Group E F G, Class III, NEMA 7CD/9EFG, Approval UL 894/1203, Application Designed to Prevent Arcing of Enclosed Switches in Ignitable Atmospheres, Chemical Plants, Petrochemical Plants, Refineries and Other Process Industries