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ABB motor protection switches MS450 + MS495
IEC/EN 60947-2, IEC/EN 60947-4-1, IEC/EN 60947-1
Description
Special Features
- Motor protection up to 22 or 55 kW (400 V)
- Rated currents 11 to 100A
- Optimal protection for motors up to 100A
- Module width of 55 or 70 mm
- Temperature compensated
- Rotary handle operation with manual release
- Clear switching position indicator I/TRIP/0
- Remote disconnection via undervoltage release or operating current release (optional)
Series Specifications
Designation
MS450 / MS495
Main contacts
3 normally open contacts
Electrical lifespan
25,000 cycles
Mechanical lifespan
50,000 cycles
Ambient temperature open
-20 ... +70 °C
Ambient temperature open - compensated
-20 ... +60 °C
ambient temperature encapsulated
-20 ... +35 °C
Shock resistance
25 g / 11 ms (MS450)
Installation position
Arbitrary
Connection cross-section MS450
0.75 ... 35 mm²
Connection cross-section MS495
10 ... 70 mm²
Tightening torque of the connection screws (main contact) MS450
3 - 4.5 Nm
Tightening torque of the connecting screws (main contact) MS495
4 - 6 Nm
Rated impulse voltage withstand Uimp
6000 V
Degree of contamination
3
Rated operating voltage Ue
690 V AC / 450 V DC
Rated operational current Ie MS450
28-50A depending on type
Rated operating current Ie MS495
45-100A depending on the type
Frequency
50/60 Hz
Motor switching capacity
600 V AC
