The intelligent air circuit breaker is suitable for use in power distribution networks operating at AC 50Hz, with rated voltages of 380V and 660V, and rated currents ranging from 200A to 6300A. Its primary function is to distribute electrical energy and to protect circuits and power supply equipment against hazards arising from faults such as overload, undervoltage, short circuits, and single-phase ground faults. This circuit breaker features a variety of intelligent protection functions, enabling selective protection; it operates with high precision, thereby preventing unnecessary power outages and enhancing the reliability of the power supply.
Under normal operating conditions, it may be utilized for the infrequent switching of circuits. Circuit breakers rated at 1250A or below are suitable for protecting motors against overload and short circuits within AC 50Hz, 380V networks. Furthermore, under normal conditions, they may also be employed for the infrequent starting of motors.