Hydraulic electromagnetic circuit breaker with high safety

Abstract

The invention relates to a hydraulic electromagnetic circuit breaker with high safety, which consists of at least one hydraulic electromagnetic circuit breaker and a base, wherein a junction terminal of the circuit breaker is respectively connected with a plugging terminal, any one of the plugging terminals passes through the rear side surface of a circuit breaker shell, a lever is arranged inside the circuit breaker, the middle part of a installation plate on the rear side surface of the circuit breaker shell is provided with a window hole, one end of the lever is arranged inside the window hole, the lever is connected with a torsional spring, the torsional spring is fixed inside the shell, the rotation route of the other end of the lever is provided with an interlock piece, the interlock piece is connected with the shell through a pin shaft, and the rotation route of one end of the interlock piece passes through a lock catch in the circuit breaker. The base is installed on a card track of a power distribution box through a screw or a trough and a clamping block structure of the rear side. The hydraulic electromagnetic circuit breaker is connected with the base in a plugging way, so when the circuit breaker is not well installed, the contact is disconnected and cannot be closed, the entire circuit stays at an absolute disconnection state when disassembling the circuit breaker main body, and the safety of an operator is ensured.

Description

Technical field: [0001] The invention relates to the electrical field, in particular to a circuit breaker, in particular to a high-safety hydraulic electromagnetic circuit breaker. Background technique: [0002] Hydraulic electromagnetic circuit breakers are widely used in communication power supplies, railway signal systems, power control systems, numerical control machine tools, automation control systems and civil lighting systems. Hydraulic electromagnetic circuit breaker consists of housing, contact system, arc extinguishing system, free tripping system, operating mechanism, hydraulic electromagnetic release, and accessories including auxiliary contacts, alarm contacts, shunt release, etc. It is suitable for making and breaking circuits, and has overload and short circuit protection functions. It has the advantages of high protection precision, small repeat error, little influence by ambient temperature, fast reset, etc. However, it cannot automatically cut off the cir...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-safety hydraulic electromagnetic circuit breaker. The high-safety hydraulic electromagnetic circuit breaker needs to solve the problem that the hydraulic electromagnetic circuit breaker in the prior art cannot automatically cut off the circuit and has potential safety hazards during maintenance. technical issues

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