Thermal Magnetic Switch 20-25A 50kA MS116-25, manual thermal magnetic motor switch, also known as a motor protection switch. It is used for turning motors on and off and for protecting them from short circuits, overloads, and phase failures without the need for fuses.

• Nominal operating voltage: 690 V AC
• Rated operational current: 25 A
• Rated instant short-circuit current setting: 375 A
• Adjustable range: 20... 25 A
• Rated operational power AC-3 (P e): 11 kW (400 V) Three-phase
• Rated impulse withstand voltage (U imp): 6 kV
• Rated insulation voltage (U i): 690 V
• Number of Poles: 3
• Electrical endurance: 50000 cycles
• Mechanical endurance: 100000 cycles
• Rated short-circuit breaking capacity (I cs):
  • (230 V AC) 10 kA
  • (400 V AC) 10 kA
  • (440 V AC) 3 kA
  • (500 V AC) 3 kA
  • (690 V AC) 2 kA
• Rated ultimate short-circuit breaking capacity (I cu):
  • (230 V AC) 16 kA
  • (400 V AC) 16 kA
  • (440 V AC) 15 kA
  • (500 V AC) 10 kA
  • (690 V AC) 3 kA