A general molded case circuit breaker

Abstract

The invention discloses a general-purpose molded case circuit breaker. The terminal numbers of the upper incoming lines of the molded case circuit breaker body are 1, 3, 5, and N from left to right, and the terminal numbers of the lower outgoing lines are 2, 2, and N respectively from left to right. 4, 6, N; the neutral terminal corresponding to terminal number N in the upper incoming line is connected to the neutral terminal corresponding to terminal number N in the lower outgoing line; the live wire terminal corresponding to terminal number 1 in the upper incoming line is connected to the terminal number in the lower outgoing line The live wire terminal corresponding to 2 is disconnected; the live wire terminal corresponding to terminal number 3 in the upper incoming line is disconnected from the live wire terminal corresponding to terminal number 4 in the lower outgoing line; The live wire terminal corresponding to terminal number 6 is disconnected; the molded case circuit breaker is generally used in single-phase system, three-phase three-wire system and three-phase four-wire system. The circuit breaker can be used in single-phase, three-phase three-wire and three-phase four-wire systems at the same time, and it can be used universally without changing its internal circuit and structure.

Description

technical field [0001] The invention relates to the technical field of power distribution system compatibility, in particular to a general-purpose molded case circuit breaker. Background technique [0002] Molded case circuit breakers are more and more widely used in power distribution systems. Molded case circuit breakers can automatically cut off the current after the current exceeds the trip setting. Molded case refers to the use of plastic insulators as the outer shell of the device. To isolate conductors and grounded metal parts, molded case circuit breakers usually contain thermal magnetic trip units, while larger models will have solid state trip sensors. [0003] However, the existing molded case circuit breakers on the market have poor versatility and cannot meet the use of single-phase systems, three-phase three-wire systems, and three-phase four-wire systems at the same time. If you want them to meet the requirements of different systems, you must Professionals a...

AI Technical Summary

Problems solved by technology

[0003] However, the existing molded case circuit breakers on the market have poor versatility and cannot meet the use of single-phase systems, three-phase three-wire systems, and three-phase four-wire systems at the same time. If you want them to meet the requirements of different systems, you must Professionals are required to modify its internal circuit and structure

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