EU2B 30mm Hazardous Location Industrial Switches IDEC EU2B 30mm Hazardous Location Industrial Switches provide increased safety for user applications and comply with UL, IECEx, and ATEX Directives for hazardous environments. These pushbutton, selector (lever or key), or emergency stop switches feature short-circuit protection with resistance to vibration and shock. These long-life components operate within a -20°C to +50°C temperature range (no freezing) with a 50mΩ maximum contact resistance (initial value) and 6kV impulse withstand voltage.