Why Can't The High-voltage Disconnect Switch Cut Off The Short-circuit Current?
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The High Voltage Disconnect Switch circuit breaker cannot interrupt short-circuit current because it is not designed to directly interrupt fault current. Short-circuit current is usually accompanied by a sudden surge in current that exceeds the switch's design capacity. For high-current short-circuit faults, specialized circuit breakers or protective devices must be used to disconnect the fault current in a timely manner, thus preventing equipment damage and electrical fires.
