DW5 Air Circuit breaker(ACB), is applied to power distribute network of AC 50Hz/60Hz, rated operate voltage is 400V,690V, rated current up to 6300A, is mainly applied to power distribute, transmission and generation protect, to protect circuit and equipment against damage of overload, undervoltage, overvoltage, current-voltage unbalance, short-circuit and grounding/leakage faults,etc.
And it ensure the power grid reasonable operation by load monitor, regional interlock. At the same time, it is used as measurement of power grid parameters of grid point current,voltage,power, frequency, quantity, harmonic wave.