Explosionproof Selector Switch Assembly, Type Knob, Size 1/2 Inch, Contact Rating 600 VAC 10 Ampere, Operation Type Maintained/Maintained/Momentary, Contact Configuration 2NO-2NC, Number of Positions 3, Throw Left-Center-Right, Actuator Material Aluminum, Enclosure Class I Div 1 and 2 Group C D, Class II Div 1 and 2 Group E F G, Class III, NEMA 3/7CD/9EFG, Constructional Feature Explosionproof, Dust Ignitionproof