Soft starter SH31

The most important advantages:

- Two PTC inputs
- Integrated bypass contactor
- Simplest installation


The powerful softstarter from BLEMO®.

A torque controlled range of units from 4.0 to 400 kW.
With 17 to 590 A rated current for three-phase squirrel-cage motors.
230 to 440 V, 3~: 4.0 to 315 kW 208 to 600 V, 3~: 4.0 to 400 kW.

Soft starter SH31

The highlights of the SH31 series

Universal use

The soft starters of the SH31 series are matched to the respective motor and mains data and are universally preset. This presetting means that the devices can be used immediately in the majority of applications without additional adjustment.


The SH31 softstarter is an economical solution for the user. It reduces installation costs thanks to the integrated bypass contactor, less cabling and space savings in the control cabinet. It protects the supply networks by reducing the current peaks and voltage drops in the network caused by motor starting. Furthermore, the operating costs of machines are reduced by reducing the mechanical load.

Standard features

  • 7-segment display
  • Operating status display with 4 LEDs
  • Serial Modbus interface via RJ45
  • Torque control
  • Current limitation
  • Integrated bypass contactor
  • Two programmable relay outputs
  • Protective lacquered boards
  • Simple installation, even retrofitted
  • jerk-free start-up and shut-down of all machines
  • RoHS compliant
  • suitable for V3 circuit
  • Two PTC inputs

your benefits

Areas of application