Semiconductor contactor and soft starter DS4

Application examples

  • Three-phase resistive and inductive loads
  • Soft starting of motors in transport and mechanical handling systems
  • High switching cycles of motors in packaging machines
  • Noiseless switching of lights and heating in buildings
  • Soft starting of pumps reduces the load on the entire installation (water hammer)
  • Solid-state switching of pumps in the extreme environments of chemical works and filling stations
  • Rapid and noiseless controls in buildings with reversing function on lift doors, barriers in garages and on conveyor belts in freezer and supermarket check-out operations
  • Smooth start that reduces wear on V-belts in fan drives

Mains connection

110 – 500 V ±10 %, 50/60 Hz

Control voltage

15 – 30 VDC / 110 – 240 VAC

Rating range

6 – 23 A (AC53, inductive load)
2.2 – 11 kW (motors)
7.5 – 15 kW (with internal bypass)
18.5 – 22 kW (with external bypass)

Performance characteristics

DS4-340-...-M(R)
  • AC53a, 600 starts per hour with 6-times starting current for 0.5 seconds
  • AC53b, 10 starts per hour with 3-times starting current for 5 seconds
DS4-340-...-MX(R)
  • AC53b, 10 starts per hour with 3-times starting current for 5 seconds

Enclosure width
    45 mm 65 mm 110 mm
   2.2  4.0  5.5  7.5   kW
  (at 400 V)
   2.2  4.0  5.5  7.5  
 7.5  11    15  22
 7.5  11    15