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Single Phase

Single Phase Soft Starters

This product has been developed specifically to soft-start large single phase compressors. It dramatically reduces the starting current while providing full-start torque, and will automatically adjust itself to cover the range of 1.75 to 3 hp (08-16) and 3 to 7 hp (16-32). It is fully self-contained in a conveniently small, double-insulated, flame-retardant enclosure.


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

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

sure start surestart hyper engineering soft start soft starter
sure start surestart hyper engineering soft start soft starter
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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)

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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)

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

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

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

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