1) Used in circuits of 50Hz (or 60Hz) system with rated voltage up to 690V, or below,
(for frame rating 63A, the rated insulation voltage is 500V), and rated current from
10A to 2,000A
2) Usually used for electricity distribution
3) Frame rating of 400A (or below) can also be used for protection of motor
4) Normally, KEM1 can be used for switching distribution circuits with infrequent
operation, as well as for the infrequent starting of motors
5) Can also be used for protecting circuits or equipment against overload, short circuit
or under-voltage
6) In compliance with the standards of IEC60947-2 and GB14048.2
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