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Rotation Direction Switch

Maxigard A4000 Series Rotation Direction Switch

Typical Application: The A4000 is used to prevent starting the motor of an incline conveyor if gravity causes the conveyor to roll backwards, protecting the drive package from damage.


  • Detect direction of shaft rotation
  • Confirm starting condition
  • Detect Shaft windmilling
  • Signal other equipment and/or P.C.’s of proper operation
  • Control other equipment for sequential starting or stopping


  • Enclosure for all industrial environments
  • 5 amp isolated relays
  • LED light for quick set up
  • Field adjustable
  • Fail safe circuitry
  • Complete system, no extras to buy


  • Exhast fans
  • Belt Conveyors
  • Tug boat propellar rotation
  • Bucket elevators
  • Centrifugal fans
  • Bi-directional
  • Start protection
  • Feedstock signal to programmable controlers
pdf documents Download A4000 Product Data Sheet
pdf documents

Download A4000 Installation Instructions
Download A4000B / A4000C Installation Instructions

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Monitors Direction of Shaft Rotation