Model PL-60 Under Speed Switch

The Model PL-60 Under Speed Switch provides a low cost, reliable and simple means of monitoring the rotational velocity of a shaft or other pieces of rotating equipment at your facility.  When the shaft or other piece of rotating equipment slows down past the user defined set-point, the PL-60 sends an alarm output signal to the control system for notification or the motor starter to shut the equipment down.  In conjunction with the alarm output the PL60 comes standard with an analog output which allows you to send a linear signal to you control system allowing you to display your real time rotational speed.  The PL-60 Under Speed Switch is housed in a heavy duty, weatherproof, hermetically sealed, anti-corrosive die cast aluminum enclosure.  It is designed to perform in the harshest environments.


  • Non-contacting, proximity-type detector provides extended service life and lower operating costs
  • Two bolt mounting for simple installation
  • Single piece construction, no separate control unit
  • Easy to set-up and troubleshoot
  • Start-up delay
  • Alarm output notification for when speed drops below user supplied set-point
  • Analog output allows you to send linear speed signal to control system