NKK Switches Half-Inch Diameter Process Sealed Rotary MRK112

The MRK112 is a half-inch diameter, process-sealed rotary switch with one pole and 12 positions, designed for low-voltage logic circuits. It features a nonshorting (break-before-make) contact timing and a self-cleaning rotary contactor disk. The switch meets IP67 of IEC60529 for sealing and has a 30° indexing. Contact resistance is 50 milliohms maximum, insulation resistance is 100 megohms minimum at 500V DC, and dielectric strength is 500V AC for one minute. Electrical life is 10,000 operations minimum; mechanical life is 30,000 operations minimum. Operating torque range is 0.005 to 0.02 Nm, and temperature range is -10°C to +70°C. The shaft is brass with nickel plating, contacts are phosphor bronze with gold plating, and the base is fiberglass reinforced polyamide. It has PC terminals, a 16.0 mm body diameter, and a behind-panel depth of 17.0 mm. Mounting torque is 0.686 Nm.