Mechanical Switch: Switch Type - Guard Door Interlock; Switch Style - Actuator Key; Enclosure Rating - IP67; Construction - Zinc Die Cast; Connection - 20mm Conduit Entry; Voltage Rating - 500V AC; Contact Rating - 1.4A; Actuator Contacts - 2NC, Slow Action; Actuator Style - Key; Operating Temperature - -13 to 185F -25 to 85C; Additional Information - Indicator: No Indicator, Head: Opening to Front and Top, NEMA 1, 4, 12, 13, Extremely Heavy Duty; Manufacturer Series - GKB