Allen-Bradley 808-H1 Zero Speed Switch 15-60RPM 600VAC

The Allen-Bradley 808-H1 Zero Speed Switch provides a clear indication when a connected motor shaft has stopped turning, enabling control systems to respond to a zero-speed condition. It senses shaft speed in the 15–60 RPM range and delivers a stable signal aligned with that threshold. The unit is rated for up to 600 VAC, making it suitable for integration with standard industrial motor circuits and control panels. As a Rockwell Automation product, the 808-H1 carries the Allen-Bradley lineage of industrial automation components. When the shaft drops below the set speed, the switch outputs a zero-speed condition that can feed into alarms, interlocks, or logic in appropriate applications.