| 摘要 |
This invention discloses a type of intelligent magnetic-hold miniature circuit breaker and its control method, comprising a casing, a magnetic-hold relay, and a drive circuit, wherein said drive circuit receives control signal and then drives operation of said magnetic-hold relay; said magnetic-hold relay comprises a dynamic spring assembly, a static spring assembly, a deflector rod, a pushing piece, and a magnetic steel assembly; rotation of said magnetic steel assembly drives said deflector rod and then closing or opening of contacts of said dynamic spring assembly and said static spring assembly via said pushing piece; said miniature circuit breaker also includes a central processor, a communication chip, and a voltage state circuit; and said deflector rod extends out through a hole on said casing to allow manual operation. This invention breaks through traditional miniature circuit breaker design concept, and in terms of functions, realizes manual operation with priority and coordination between manual operation and remote operation in normal state, as well as protection in abnormal state, i.e. in case of interruption of commercial power supply followed by its restoration, clearing and addition of manual opening record. |
