Intelligent magnetic latching miniature circuit breaker

摘要

This invention discloses a type of intelligent magnetic-hold miniature circuit breaker, 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, a mutual inductance module, and a current conditioning circuit. Said mutual inductance module is installed on the extension wire of the dynamic spring assembly. Said current conditioning circuit is connected to said central processor and said mutual inductance module respectively. Said central processor drives the magnetic-hold relay via said drive circuit according to current state signal from said current conditioning circuit, to realize overload protection.

主权项

1. An intelligent magnetic-hold miniature circuit breaker, comprising a casing, a magnetic-hold relay, a drive circuit, a central processor, a communication chip, a mutual inductance module, and a current conditioning circuit, said drive circuit being in communication with said magnetic-hold relay which comprises a dynamic spring assembly having an extension wire, a static spring assembly, a deflector rod, a pushing piece, and a magnetic steel assembly, said communication chip being connected to said central processor which is connected to said drive circuit to transmit control signals to said drive circuit, said mutual inductance module being installed on said extension wire of said dynamic spring assembly, said current conditioning circuit being connected to said central processor and said mutual inductance module, and said magnetic-hold relay being controlled by said central processor via said drive circuit according to current state signals received from said current conditioning circuit to realize overload protection.