NXBLE-63ZB Self-Diagnostic Residual Current Aptomat with Overcurrent Protection

The NXBLE-63ZB self-diagnostic residual current circuit breaker with overcurrent protection is designed for low-voltage distribution circuits operating at AC 230V and 50Hz. It provides integrated protection against residual current, overload and short-circuit faults. When an electrical fault occurs, the device disconnects the circuit promptly to reduce the risk of equipment damage, electric shock and other electrical hazards. The product is available with rated currents of 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A and 63A. It has a rated residual operating current of 30mA and is available in 1P+N and 2P configurations. Its Type C instantaneous tripping characteristic makes it suitable for residential, commercial and general industrial distribution applications. The NXBLE-63ZB provides a rated short-circuit capacity of 6kA and a rated impulse withstand voltage of 4kV. Its mechanical endurance reaches 20,000 operating cycles, while its electrical endurance reaches 10,000 operating cycles. The product complies with GB/T 16917.1 and is suitable for terminal distribution circuits requiring both residual current protection and overcurrent protection. The integrated self-diagnostic function assists in checking the operating status of the residual current protection mechanism. The specific diagnostic method, status indication and operating procedure depend on the actual product configuration and should be confirmed according to the product instruction manual. When multiple devices are installed side by side or used at high altitudes, the rated current should be appropriately derated according to the number of installed devices, ambient temperature, installation conditions, altitude and actual load characteristics.