Thermal magnetic motor switch, also known as motor protection switch, used for turning motors on and off. It protects motors from short circuits, overloads, and phase failures without the need for fuses.

• Rated operating voltage: Main circuit 690 V AC.
• Rated operational current: 54 A.
• Rated instantaneous short-circuit current setting: 810 A.
• Adjustment range: 40... 54 A.
• Rated operational power AC-3 (P e): three-phase 22kW (400 V).
• Rated impulse withstand voltage (U imp): 8 kV.
• Rated insulation voltage (U i): 1000 V.
• Number of Poles: 3.
• Electrical endurance: 25000 cycles.
• Mechanical endurance: 50000 cycles.
• Dimensions:
• Width: 55mm.
• Height: 142.65mm.
• Length: 122.1mm.
• Rated short-circuit breaking capacity (I cs):
  • (230 V AC) 30 kA.
  • (400 V AC) 30 kA.
  • (440 V AC) 30 kA.
  • (500 V AC) 20 kA.
  • (690 V AC) 6 kA.
  • (250 V DC) 3 poles in series 100 kA.
• Rated ultimate short-circuit breaking capacity (I cu):
  • (230 V AC) 50 kA.
  • (400 V AC) 50 kA.
  • (440 V AC) 45 kA.
  • (500 V AC) 20 kA.
  • (690 V AC) 8 kA.
  • (250 V DC) 100 kA.