The Thermomagnetic Switch 20-25A 100kA MS132-25 is a manual thermomagnetic motor switch, also known as a motor protection switch. It is used to turn motors on and off, as well as to protect them from short circuits, overload, and phase failures, without the need for a fuse.
Features:
- Rated operational voltage main circuit: 690V AC / 250V DC
- Rated operational current: 25A
- Rated instantaneous short-circuit current setting: 375A
- Setting range: 20 ... 25 A
- Rated operational power AC-3 (P e): 400 V) Three-phase 11 kW
- Rated impulse withstand voltage (U imp): Main circuit 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) 50 kA
- (250 V DC) 3 poles in series 10 kA
- (400 V AC) 50 kA
- (440 V AC) 30 kA
- (500 V AC) 10 kA
- (690 V AC) 3 kA
- Rated ultimate short-circuit breaking capacity (I cu):
- (230 V AC) 50 kA
- (400 V AC) 50 kA
- (440 V AC) 30 kA
- (500 V AC) 10 kA
- (690 V AC) 3 kA