Series Circuit-breaker incorporating residual current protection (Reclosing)

The CRM2Z series residual current protection circuit breaker with automatic reclosing function (hereinafter referred to as reclosing) is suitable for three-phase four wire neutral point direct grounding (TT) distribution grids with AC 50HZ, rated voltage 400V, and Rated current up to 800A. It is used to provide indirect contact protection against personal electric shock hazards and can also protect lines and electrical equipment. The product has overload protection, short circuit protection, overvoltage protection, undervoltage protection, phase loss protection, zero break protection, surge protection, automatic reclosing, and communication functions, and is widely used in industries such as power.

The product complies with GB/T14048.2 and IEC60947-2 standards.

This product has a comprehensive protection function, which integrates overload protection, short circuit protection, overvoltage protection, undervoltage protection, phase loss protection, zero break protection, surge protection, automatic reclosing, and communication functions, ensuring the reliable opening and closing of the circuit breaker and minimizing the occurrence of accidents. Intelligent circuit design: an intelligent control circuit composed of a microcontroller, which accurately and real-time measures various operating parameters, and can quickly trip in case of faults, ensuring the safety of the circuit and personnel. It can set the required functions such as load current, residual current, and residual current action time according to the actual situation, monitor the cause of fault tripping, and display the fault parameters when tripping. Power outage and restart after power outage, the function protection value and a series of parameters are not lost. Convenient human-machine operation: The display interface automatically displays parameters such as working voltage, current, and real-time residual current value in a cyclic manner; Users can easily query the fault parameters and total number of trips caused by various faults; Intelligent circuit breakers have automatic and manual opening and closing functions, making it easy for users to operate in various situations. Exquisite shell volume: The combination of residual current relays, AC contactors, and air circuit breakers has been transformed into an integrated design, greatly reducing the installation space of the switchgear, simplifying wiring, and saving customers the total product cost. Higher breaking capacity: This circuit breaker has the advantages of tight structure and strong breaking force. Advanced remote communication: It can establish communication connections with computers and remote monitoring screens, and can also establish communication with mobile phones through GPRS communication modules, making it convenient for users to remotely control and real-time understand the operation status of smart circuit breakers.

(For communication function operation, please refer to the communication type manual) Attached separately.