Siemens 3SB03-KER Push Button Switch Red Twist Release

Siemens 3SB03-KER Push Button Switch Red Twist Release is a panel-mount operator from Siemens’ SIRIUS 3SB signaling family, offered with an Extended Red Pushlock Twist Release actuator. The red actuator and twist-release action provide a deliberate reset after actuation, making it well-suited for control-panel inputs in industrial environments. As part of the 3SB pushbutton lineup, this device is designed to work with standard Siemens contact blocks and mounting accessories to form a compact, reliable control interface in cabinets, machines, and automation panels. Typical applications include manual start/stop and reset points in manufacturing lines, process controls, and safety interlock sequences where a clearly visible red pushbutton is desired for operator action.