Condition Sensing Switches and Controls
Speed Sensing Switches
Bulletin 808 Speed Sensing Switches
Allen-Bradley Bulletin 808 Speed Switches provide flexibility for the basic functions required of rotating machinery. Mechanically connected to a machine, these devices provide an electrical contact signal at a determined speed for plugging, anti-plugging, speed sensing and direction of rotation.
Standard Features
- Speed setting from 15 - 1,000 RPM
- Shaft speeds up to 2,000 RPM
- Double-shaft seal with long-life precision bearings
- Four mounting arrangements
- Safety lock-out solenoid available
- Available in Type 1, 4/13 and enclosures
A superior design withstands the toughest applications. This line of products is not affected by switching due to noise and spurious transients from AC or DC supplies.
Typical Applications
- Machine tools
- Conveyor sequence
- Fan/pump rotation