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.

Two Versions Available

  • Primary - includes the function of the contactor
  • Secondary - used in conjunction with an existing contactor


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 protection
  • Self-testing diagnostics (primary model only)

Models

  • SS0A12-20SN (0.75 to 1.75 hp - 60/50Hz)
  • SS1A08-16SN (1.75 to 3.5 hp - 60/50Hz)
  • SS1A16-32SN (3.5 to 7 hp - 60/50Hz)

Literature

Video

Specifications

Voltage Ratings (ac)115, 220-240 Volts
Operating Voltage Range (ac)95-127, 192-253 Volts
Frequency Models work on 50Hz or 60Hz
Maximum Starting Current44 amps rms
Maximum Step Starting Current 39 amps rms
Maximum Supply Impedance0.8 ohms
Control Input240 volts AC
Operating Temperature-4°F to 150°F (-20°C to 65°C)
Compressor Rated Load Amps (RLA)32 Amps Max
IP Rating207
Dimensions5.30" x 2.94" x 1.96" (132mm x 72mm x 49mm)
MaterialABS flameproof (UL-94V0)
Software Cycle Delay 180 sec., defrost cycle compatible (Primary Model)
Software Fault Delay300 seconds
Software Optimization 1.75 to 7 hp compressors
Duty Cycle15 starts/hr
Shutdown on Low Voltage (115V)Less than 95 volts
Shutdown on Low Voltage (220-240V)Less than 195 volts
Power Loss Reset100ms detection
Motor MonitoringMonitors start winding potential
Motor ReversalShutdown for 180 sec.
EMC Compliance #N2002

Dimensions

Electrical

Sure-Start vs. Locked Rotor Amperage

Typical Amperage Reduction with Sure-Start

Nominal Tons RefrigerationMotor SizeBefore Sure-StartAfter Sure-Start
84K7 hp183A55A
72K6 hp150A40A
60K5 hp130A36A
48K4 hp100A29A
36K3 hp75A23A
24K2 hp50A15A

Wiring Schematic

Hyper Engineering is not to be held responsible for erroneous literature regarding capacities, dimensions, applications, etc. stated herein. Products, specifications, and data in this literature are subject to change without notice. The information herein is intended for use only by persons having the appropriate technical knowledge and skills (at their own discretion and risk). Since conditions of use are outside Hyper Engineering's control, we cannot assume any liability for results obtained or damages occurred due to improper application.

Over 250,000 Sure-Starts in use worldwide!