3SE5 Safety Interlock Switch, Metal, 2NC/1NO. Connection Type: M20. Lock Style: Key. Maximum AC Voltage: 230V. Maximum DC Voltage: 230V. Range: Sirius. Length: 110mm. Width: 56mm. Minimum Operating Temperature: -25°C. Dimensions: 110 x 56 x 37.8 mm. MPN: 3SE5122-0QV10, Siemens