Abb Thermomagnetic Switch 20.0-25.0A 47903

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

• Rated operating voltage: 690 V AC
• Rated operating current: 25 A
• Rated instantaneous short-circuit current setting: 375 A
• Adjustment range: 20… 25A
• Rated operational power AC-3 (P e): 11 kW (400 V) Three-phase
• Rated impulse withstand voltage (U imp): 6 kV
• Nominal insulation voltage (U i): 690V
• Number of Poles: 3
• Electrical strength: 50000 cycles
• Mechanical strength: 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