Keyed Selector Switch 22mm See more options in our Electrical Switches collection. The AK2 Switch comes with two keys that are matched to the switch. The switch will not operate without a key. Each switch has a normally open and normally closed contact. These switches fit a standard 22 mm hole. Specifications: Thermal Current Ith 10A 50/60HZ Insulation Voltage Ui 600V Enclosed Thermal Current Ith 10A Short Circuit Current 1000A AC- 120V 6A AC- 240V 3A AC-480V 1.5A AC-600V 1.2A DC-120V 2.2A DC-240V 6A DC-480V .4A Ambient Temperature: -20 C to 60C Contact Resistance 50m Ohm ( initial) IP 65 Button Life - 1 Million operations Contact Block Life - 1 Million operations Specification Sheet - Keyed Electrical Switch A2K Stack-Light.com supplies a large variety of switches and lights to the industry. We are here to help with your application.