When MSD is opening, there is an insulation distance and an obvious disconnection mark between the contacts in accordance with the requirements of the station. When MSD is losing, it can carry the current under norma| circuit conditions and abnorma| conditions within the specified time, such as short circuit.
The function of the isolating switch is to disconnect the circuit with no load current, so that the equipment under inspection and the power supply have an obvious disconnection mark to ensure the safety of the maintenance personnel. The isolating switch cannot cut off the load current and short-circuit current without a specia| arc extinguishing device. Therefore, the isolating switch can only be operated when the circuit breaker is disconnected.
Product Selection：
Technical Parameters：
|
Type |
AOH-100 |
AOH-125 |
|
Standard |
GB14048.3、IEC60947-3 |
|
|
Pole |
1P、2P、3P、4P |
|
|
Indicating function |
Red/green indication |
No |
|
Rated current(A) |
25、40、63、80、100 |
80、100、125 |
|
Rated voltage(V) |
AC230(1P)，AC230/400(2P、3P、4P) |
|
|
Rated insulated voltage(V) |
690 |
|
|
Rated impulse withstand voltage(kV) |
6 |
|
|
Rated short-circuit withstand current |
12le/1s |
|
|
Rated short-circuit making capacity |
20le/0.1s |
|
|
Rated making and breaking capacity |
3le,1.05Ue,COSф=0.8 |
|
|
Utilization |
AC-21B、AC-22A |
|
|
Electrical life |
1500 |
|
|
Mechanical life |
8500 |
|
|
Pollution grade |
2 |
|
|
Temperature |
-35℃~ +70C |
|
|
Altitude |
Do not exceed 2000m |
|
|
Wiring terminal |
Screw crimping |
|
|
Max. connection capacity(mm') |
16(25A-63A)、50(80A-125A) |
|
|
Max, ultimate torque (Nm) |
2.0(25A-63A)、3.5(80A~125A) |
|
|
Installation category |
II、III |
|
|
Installation method |
TH35-7.5 Type Standard |
|
|
Incoming wiring method |
Can be used up or down |
|
|
Installable accessories |
—— |
|
Outline Overall and Installation Dimensions (mm)：
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