SJKM1E Electronic Molded Case Circuit Breaker (hereinafter referred to as circuit breaker) is suitable for AC 50Hz (or 60Hz) with rated insulation voltage of 800V, rated working voltage of 400V and below, and rated working current up to 800A in circuits for infrequent switching and infrequent motor starting. The circuit breaker has overload long-time inverse time delay, short-circuit short-time inverse time delay, short-circuit short-time definite time delay, short-circuit instantaneous and undervoltage protection functions, as well as residual current protection (optional), phase failure protection (optional), which can protect lines and power equipment from damage. The circuit breaker has complete and accurate protection characteristics, which can improve power supply reliability and avoid unnecessary power outages. The "Z" and "B" types have communication interfaces for remote control, telemetry, remote signaling and remote adjustment to meet the requirements of control centers and automation systems. According to the rated ultimate short-circuit breaking capacity, the circuit breaker is divided into two types: M type (higher breaking type) and H type (high breaking type). This circuit breaker features small size, high breaking capacity, short flying arc and anti-vibration characteristics. The circuit breaker can be installed vertically (vertical installation) or horizontally (horizontal installation).
The circuit breaker cannot have the input wire reversed. That is, only terminals 1, 3, and 5 should be connected to the power supply, while terminals 2, 4, and 6 should be connected to the load.
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