Explosion-Proof Non-Illuminated Pushbutton, Type Short Barrel, Operation Type Momentary, Contact Configuration 1NC, Contact Rating 600 VAC, Cap/Lens Color Red, Enclosure Material Copper-Free Aluminum, Enclosure Class I Div 1 and 2 Group B C D, Class I Zone 1 and 2 Group IIA IIB, Class II Div 1 and 2 Group E F G, Class III, NEMA 4/7BCD/9EFG, Approval UL 886, CSA C22.2, Connection Size 3/4 Inch NPSM, Constructional Feature Explosion-Proof, Application Hazardous Location