Model BPMS Magnetically Coupled Speed Switch

The Model BPMS-1 Speed Switch is used for accurate sensing of Under Speed, Over Speed and Zero Speed conditions on rotating shafts, pulleys or other rotating equipment within your plant.  It has one of the most innovative designs for installation today.  It utilizes a magnet for attachment to the rotating shaft.  Tapping the pulley and coupling the speed sensor is no longer required.  Simply apply the speed sensor to the shaft and a strong magnet holds it in place, wire it up and you are ready to go.


  • “Snap” in place installation
  • “Break-away” design, allows it to detach from the shaft if a large object strikes it
  • Universal power supply, 20-240 VAC/VDC
  • 2-Wire proximity switch
  • Optional NPN or PNP 3-wire proximity switches
  • High visible LED to confirm operation
  • Multiple pulse ranges, 1, 2, 4 & 12 pulse per revolution available
  • Low profile, small shaft and low temp options