Allen-Bradley 808C3 Speed Switch Interrupter

Allen-Bradley 808C3 Speed Switch Interrupter is a model in the Allen-Bradley 808 Speed Switch family that provides a defined electrical signal when a target speed is reached. As part of Rockwell Automation's 808 speed sensing lineup, it functions as an electromechanical speed switch used for speed sensing, direction-of-rotation indication, and plugging/anti-plugging control in motor and drive circuits. The device relies on magnetic coupling technology to sense shaft speed and translate it into a switch output without complex electronics. The 808 family uses this sensing method to generate a discrete contact signal that can feed control logic, relays, or interlock circuits. The 808C3 shares the same sensing principle and electrical interface that characterizes Allen-Bradley 808 Speed Switches, delivering reliable mechanical speed signaling for automation sequences. Typical applications include signaling a controller at a speed threshold, interlocking safety circuits with rotating equipment, and coordinating start/stop logic in conveyors, fans, and similar machinery where monitoring a defined speed is important.