5G hydraulic electromagnetic circuit breaker

Abstract

The invention provides a 5G hydraulic electromagnetic circuit breaker. The circuit breaker comprises a shell, an unlocking mechanism, a tripping mechanism, a moving contact, a static contact and an arc extinguishing chamber, the unlocking mechanism, the tripping mechanism, the moving contact, the static contact and the arc extinguishing chamber are arranged in the shell, a moving contact point isarranged on the moving contact, and a static contact point is arranged on the static contact; the unlocking mechanism is adjacent to the tripping mechanism and can drive the tripping mechanism to rotate; the tripping mechanism is hinged with the moving contact, and when the tripping mechanism rotates, the moving contact rotates along with the tripping mechanism to drive the moving contact to be incontact with or far away from the static contact, so that the on-off of the circuit breaker is realized; one end of the static contact is connected with a wire inlet terminal, the middle part of thestatic contact is bent towards one side far away from the wire inlet terminal to form a U-shaped structure, and the arc extinguishing chamber is adjacent to the U-shaped structure; a static contact point is arranged on the other end of the static contact, one side of the static contact is provided with a lower arc angle which extends towards the internal direction of the arc extinguishing chamberand is used for guiding an electric arc to quickly enter the arc extinguishing chamber. The circuit breaker can rapidly eliminate electric arcs, avoids breaking delay of the moving contact and the static contact, and is simple and safe in disassembly and assembly process.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a hydraulic electromagnetic circuit breaker for 5G that can be disconnected quickly and is easy to assemble and disassemble. Background technique [0002] A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and close, carry and break current under abnormal circuit conditions within a specified time; stream protection. [0003] When the load is overloaded, the current through the electromagnetic coil in the tripping mechanism increases and exceeds the rated value, the magnetic field strength of the electromagnetic coil increases, the moving iron core in the delay tube moves to the pole shoe, the electromagnetic force reaches the maximum value, and the armature is attracted to the pole shoe , the release action drives the moving contact to rotate, so that the moving contact is separated from the static contact. At the moment w...

AI Technical Summary

Problems solved by technology

[0004] In addition, the circuit breaker is generally installed in the panel during use, and only the manual switch part is exposed. Generally, after the circuit breaker is installed in place, another panel should be covered to prevent it from falling out. When multiple switches need to be installed at the same time When using a circuit breaker, the assembly process is cumbersome; and when the manual switch of the circuit breaker fails, because the internal circuit connection is normal, there is a safety hazard in the replacement process

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