The DZ47L1E series electronic residual current circuit breaker (RCBO) is a safety protection device designed for low-voltage terminal distribution systems. Using advanced electronic residual current detection technology, it continuously monitors leakage current in the circuit and quickly disconnects the power supply when a residual current fault occurs, effectively reducing the risk of electric shock and electrical fire. The product is suitable for AC 50Hz power systems with a rated operating voltage of AC230/400V. The rated current range includes 10A, 16A, 20A, 25A, 32A, 40A and 63A, meeting different terminal load protection requirements. The DZ47L1E series supports two main pole configurations: 2P: Suitable for single-phase circuit protection. 4P: Suitable for three-phase four-wire distribution system protection. The circuit breaker provides a rated residual operating current of 30mA, which enables effective protection against leakage faults and improves electrical safety for users and equipment. The series features high short-circuit performance. The rated short-circuit making and breaking capacity reaches: 500A for In ≤ 40A; 630A for In = 63A. The rated ultimate short-circuit breaking capacity reaches 6000A, ensuring reliable protection under short-circuit conditions. The product adopts a red operating handle with ON-OFF position indication, allowing users to quickly identify the operating status. It supports standard distribution box installation and provides IP40 protection when installed inside a distribution enclosure, suitable for general low-voltage electrical environments. The DZ47L1E series complies with relevant low-voltage electrical standards and is suitable for residential distribution boards, commercial buildings, small industrial equipment and terminal electrical protection systems.