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1. Applicable Scope and Purpose of Circuit Breaker

The NDM2E-250 series of electronic molded case circuit breakers (hereinafter referred to as circuit breakers) apply to infrequent switching of circuits with the AC 50Hz, the working voltage of AC400V and working current of 250A as well as infrequent motor starting. With the overload, short circuit and undervoltage protection functions, the circuit breaker can protect lines and power equipment from damage. The NDM2E circuit breaker can provide modules with the communication function, which can make the original circuit breaker upgrade to the communication circuit breaker conveniently, thus realizing “Four remotes” functions, namely, remote control, remote adjustment, remote measuring and remote measurement.

2. Specification and Model Description of Circuit Breaker