Shock and Vibration Control Switch
Shock and Vibration Control Switch


  • NEMA 4X/IP66 enclosure (CSA Types 4 & 12)
  • Protects your equipment from excessive shock or vibration
  • Fine adjustment to precisely select the degree of sensitivity
  • Reset from a remote location (optional)
  • Time delay to override trip operation at Start-up (optional)
  • Space heater to prevent moisture condensation inside the unit (optional)



VS94 Series is an electro-mechanical device designed to protect equipment from damaging shock or vibration. This sensitive mechanism can detect excessive shock or vibration and shutdown the equipment before further damage occurs. A set of contacts is held in a latched position through a magnetic latch mechanism. As the level of shock or vibration increases an inertia mass exerts force against the latch arm and forces it away from the magnetic latch causing the latch arm to separate and to operate the contacts. Sensitivity is obtained by adjusting the amount of air gap between the magnet and latch arm plate.


The VS94 Series is housed in a NEMA 4/4X glass filled polyester enclosure and has a base mount. It is for applications in non-hazardous locations.



Applications for the VS94 include all stationary types of machinery or equipment where excessive shock/vibration can be damaging or poses a threat to normal operations such as in:

  • Cooling fans
  • Engines
  • Pump jacks
  • Compressors
  • Pumps
  • Rotating and Reciprocating Machinery





  • Electromechanical design
  • Detects shock or vibration in three planes of motion
  • NEMA 4/4X (CSA types 4 and 12) weather-proof enclosure
  • Reliable magnetic latch feature
  • Remote reset (optional)
  • AdjustableStart-upTimeDelay(optional)
  • Space heater circuit to prevent housing
  • Moisture condensation (optional)
  • Two (2) versatile SPDT snap-switches rated up to 480 VAC.
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