NKK Switches Half-Inch Diameter Process Sealed Rotary MRA403-BF

The MRA403-BF is a half-inch diameter, process-sealed rotary switch with 4 poles and 2-3 positions, shaft actuated with PC terminals and a plain black knob. It operates with nonshorting (break-before-make) contact timing and 30° indexing. Contact resistance is 10 milliohms maximum, insulation resistance is 100 megohms minimum at 500V DC, and dielectric strength is 1,000V AC for 1 minute. Rated for 250mA at 125V AC resistive load, it has an electrical life of 10,000 operations and a mechanical life of 30,000 operations. Operating torque is 0.02-0.07 Nm. The shaft is brass with nickel plating, contacts are copper with silver plating, and the base is diallyl phthalate. Operating temperature is -10°C to +70°C. Mounting torque is 0.686 Nm. No UL or CSA certification.