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> Motor Controls > AC Motor Soft Starters > Compact Soft Starters

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Compact AC Motor Soft Starters

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Compact solid-state soft starters featuring a space-saving body use thyristors for controlled reduced voltage motor starting. These units then switch to internal contacts for efficient running at the rated speed. Soft starters lower energy use and reduce wear on motors and mechanical equipment.

Compact Soft Starters

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Compact AC Motor Soft Starters

Compact motor soft starters feature a small footprint and provide for gradual motor starts (and stops, if equipped), reducing the mechanical shock associated with full on/full off motor control.

For assistance with choosing the correct soft starter for your application, see our Soft Starter Selector .

Soft Starters Overview

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WEG SSW05 Series Compact Soft Starters

WEG SSW05 soft starters are compact, fully digital devices with a state-of-the-art DSP (Digital Signal Processor) controller. The digital construction provides optimum operation, diagnostics capability, and full motor protection.

10A to 85A rated current versions @ 230-460V
59mm and 79mm width sizes
208-480 VAC, 50/60 Hz input power supply
Built-in bypass contactor
One digital input for Start/Stop (90-250 VAC)
One digital input for Fault Reset (90-250 VAC)
One relay output for Run indication (1A, 250V)
RS-232 serial port for HMI connection only
Adjustable acceleration and deceleration ramps (1-20 sec)
Adjustable pedestal voltage (30-80% of line voltage)
Protective features:
- Motor overload
- Overcurrent and locked rotor
- SCR overload
- Phase loss and phase sequence
DIN rail or direct mount
Remote keypad (optional)
Standards and approvals: cULus, CE

Starting at
$351.00
(SSW050010T2246TPZ)

STELLAR® SR22 Series Compact 1 and 3-Phase Soft Starters

Low-cost SR22 semiconductor soft starters can control 1-phase (split phase, cap run, or cap start / cap run motor) and 3-phase AC induction motors. These soft starters use thyristors for controlled reduced voltage motor starting and stopping, then switch to internal contacts for efficient running at rated speed.

5A to 40A rated current versions
45mm and 55mm standard sizes
1-phase 5A-40A @ 110-240 VAC
3-phase 5A-40A @ 208-460 VAC
24 VDC control voltage
Easily and separately adjustable motor soft start and stop times
Two-phase control
Internal bypass contacts for run
DIN rail mounting
Six error/trip indications:
- AC Supply
- Control Supply
- Overheated
- Bypass Failure
- Shear Pin
- Overcurrent
Standards and approvals: UL listed (E333109), CE, RoHS