Compact AC Motor Soft Starters - SR22 Series

• The SR22 series motor soft starters use thyristors for controlled reduced voltage motor starting and stopping
  
  
• These low voltage soft starters then switch to internal contacts for efficient running at the rated speed
  

• 5A-40A @ 208V-460V
• 24 VDC control voltage
• Easily and separately adjustable motor soft start and stop times
• Two-phase control
• Internal bypass contacts for run
• Error and Run LEDs
• DIN rail mounting
• Cooling fans (available option)
• Two standard-size widths: 45mm & 55mm
• Six error/trip indications: AC Supply, Control Supply, Overheated, Bypass Failure, Shear Pin, Overcurrent

• UL listed* (E333109) *(optional fans are UL recognized: E132139, E77551, E89936)
• RoHS
• CE

• Cooling fan (increases # of motor soft starts/hour)

• Mechanical Advantages
• Smooth acceleration; reduced shock and starting stress
• Extend lifespan of mechanical drive train components
• Fluid couplings and some clutches can be eliminated
• Electrical Advantages
• Reduced motor starting current
• More AC motors or larger AC motors can be started from lower-capacity power sources
• Soft start motor control allows motors to be started more frequently
• Internal mechanical contacts open and close under reduced current, increasing lifespan and reliability
• Economic Advantages
• Lower overall costs for new installations
• Reduced maintenance and replacement of mechanical drive train components
• Reduced motor starting current reduces electrical power costs by reducing peak demand

• Our Sizing Chart contains 3 easy steps to properly size your soft starter based on horsepower, voltage, and starting class

Compact Motor Soft Starters / Cooling Fans