Selector Switch Control Station, Type Feed Through, Constructional Feature Explosion-Proof, Dust-Ignitionproof, Voltage Rating 600 VAC, Current Rating 10 Ampere, Operation Type Maintained, Contact Configuration 4NO-4NC, Number of Circuits 4, Number of Positions 3, Operator Type Knob, Box Type Single Gang, Hub Size 3/4 Inch, Enclosure Material Zinc Electroplated Dichromate Epoxy Powder Coated Copper-Free Aluminum, Enclosure Class I Div 1 Group C D, Class I Div 2 Group B C D, Class II Div 1 and 2 Group E F G, Class III, NEMA 3/7CD/9EFG, Approval UL 508/698/1203, Size 6.51 Inch L x 3.72 Inch W x 6.69 Inch D