NKK Switches Miniature PCB Process Sealed Rotary MRB14B

The MRB14B is a miniature PCB-mounted rotary switch with a single pole, three-throw circuit, 45° indexing, and straight PC terminals with a bracket. It features a double-flatted bushing for panel stability, totally sealed construction for contamination resistance, and break-before-make contact timing. The switch operates at a maximum logic-level capacity of 0.4VA at 28V AC/DC, with contact resistance of 80 milliohms maximum and insulation resistance of 100 megohms minimum. It has a mechanical life of 30,000 operations and an electrical life of 10,000 operations, with an operating torque of 0.04Nm. The terminals have a 2.54mm x 2.54mm spacing conforming to standard PCB grid layout. The operating temperature range is -10°C to +70°C. Panel sealing to IP67 is achievable with the optional AT535 o-ring. The shaft is brass with nickel plating, contacts are gold-plated beryllium copper and copper, and the base is polyamide. Mounting torque is 0.686Nm.