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Single Phase Soft Starters

This product has been developed specifically to soft start large single phase compressors and motors. It provides a dramatic reduction in the starting current but still provides full start torque. It will automatically adjust itself to cover the range of 1.75 to 7 hp. It is fully self-contained in a conveniently small, double insulated and flame retardant enclosure. Contact us if you're interested in purchasing our products or need more information.


Sure-Start soft starters are ETL, CE and RoHS compliant.


sure start surestart hyper engineering soft start soft starter

Features & Benefits

  • Rated for motors between 1.75 to 7 horse power electrical

  • Reduces locked rotor amperage (LRA)/inrush current up to 70% at start-up

  • Eliminates light flicker

  • Reduces start-up noise

  • Avoids torque stress fracture on pipes

  • Automatic optimization of motor start-up current

  • Reduced stress and heating of compressor/motor therefore extending the life

  • Allows systems to meet certain utility requirements

  • Easy installation with supplied wiring (special wiring options available)

Motor Protection Functions

  • Protects the compressor/motor from stalling at low voltages

  • Delay function limits number of motor starts per hour

  • Thyristor protected for long life (primary model only)

  • No extra motor contactor needed (primary model only)

  • Provides motor reversal protection during short power outages

  • Internal delay timers prevents rapid cycling in fault conditions

  • Provides brownout protectionSelf-testing diagnostics (primary model only)



  • SS0B12-20SN (115V, 60/50Hz, 12-20 FLA)

  • SS1B08-16SN (230V, 60/50Hz, 08-16 FLA)

  • SS1B16-32SN (230V, 60/50Hz, 16-32 FLA)

sure start surestart hyper engineering soft start soft starter

Sure Start products also reduce blinking lights and dimming lights when large AC loads start up.

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