Soft Starters

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A reduced voltage soft starter helps protect the motor and connected equipment from damage by controlling the terminal voltage. This limits the initial inrush of current and reduces the mechanical shock associated with motor startup and provides a more gradual ramp up to full speed. Soft Starters are also beneficial to electrical systems with limited current capacity when using a soft starter for motor starting to limit the inrush current. By gradually increasing the motor terminal voltage the soft starter produces a more regulated motor acceleration up to full speed. Soft starters are also capable of providing a gradual ramp to stop where sudden stopping may create problems in the connected equipment.

Benefits of using Soft Starters:
  • Speed ramping and torque control are desired when starting or stopping
  • High inrush currents associated with starting a large motor need to be limited to avoid supply network issues or penalty charges
  • A gradual controlled starting is needed to avoid torque spikes and tension in the mechanical system associated with normal equipment startup (e.g., conveyors, beltdriven systems, gears, couplings, etc.)
  • Avoiding pressure surges or ‘hammering’ in piping systems when fluid changes speed too rapidly
5 to 400 HP



230, 460, or 575V Models







from $603
 



 



 



from $12
25 to 1500HP



230, 460, 575V Models







from $1444
 



 



 



from $18
5 to 1200HP



230 or 460V Models



UL Type 1, 3R, 4, and 12



from $1475