Moisture-proof molded-case circuit breaker with mechanical interlocking protection device

Abstract

The invention discloses a moisture-proof molded-case circuit breaker with a mechanical interlocking protection device. The moisture-proof molded-case circuit breaker comprises an installation base plate and a molded-case circuit breaker body, the top of the molded-case circuit breaker body is provided with external connectors, metal connecting blocks are fixed on the top of the inner side of the molded-case circuit breaker body, and metal conducting strips are connected below the metal connecting blocks. According to the moisture-proof molded-case circuit breaker, when a short circuit detectordetects an over-high line current, namely short circuit occurs, a separating plate control block immediately and forwardly pushes a separating plate for a distance, the metal conducting strips and through holes are staggered, the metal conducting strips do not make contact with internal connectors, the line can be immediately disconnected, and the harm and the loss caused by short circuit can bereduced to the maximum; and moisture-proof boards are additionally arranged at two sides in the moisture-proof molded-case circuit breaker so that electric appliance components in the circuit breakercan have a dry work environment through the moisture absorption effect of the moisture-proof boards, and corrosion and rusting of the electric appliance components due to moisture can be prevented.

Description

technical field [0001] The invention relates to the technical field of circuit protection equipment, in particular to a moisture-proof molded case circuit breaker with a mechanical interlock protection device. Background technique [0002] A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high and low voltage boundaries is relatively vague. Generally, those above 3kV are called high-voltage electrical appliances. Circuit breakers can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, and automatically cut off the circuit when they are severely overloaded, short-circuited, or under-voltage. Its function is equ...

AI Technical Summary

Problems solved by technology

[0003] However, the existing molded case circuit breakers still have disadvantages when they are in use. Their structure is relatively simple, and there are still short circuits caused by user negligence or other circuit aging during use. The short circuit is likely to cause other electrical appliances to burn out. , and even cause serious dangers such as fire

Images