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A Miniature Circuit Breaker with Double Breakpoint Current Limiting

A small circuit breaker, double break point technology, applied in the direction of circuit breaker components, etc., can solve the problem of poor breaking capacity of small circuit breakers, and achieve the effect of improving short-circuit breaking capacity, simple structure, and reliable breaking current

Active Publication Date: 2016-08-24
FATO MECHANICAL & ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of poor breaking capacity of existing miniature circuit breakers in the background technology, the present invention provides a miniature circuit breaker with double breakpoint current limiting

Method used

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  • A Miniature Circuit Breaker with Double Breakpoint Current Limiting
  • A Miniature Circuit Breaker with Double Breakpoint Current Limiting
  • A Miniature Circuit Breaker with Double Breakpoint Current Limiting

Examples

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Embodiment Construction

[0025] Embodiments of the present invention will be further described below in conjunction with accompanying drawings:

[0026] Depend on figure 1 combine figure 2 , 3 , 4, 5, 6, 7, 8, 9, a small circuit breaker with double breakpoint current limiting, including a housing 1, an operating mechanism 2, a transmission mechanism 3, a contact system 4 and an arc extinguishing system 5, The operating mechanism 2 is connected to the contact system 4 through the transmission mechanism 3, the contact system 4 includes the moving contact 41 and the static contact 42, the housing 1 includes the front cover 11 and the rear cover 12, The moving contact 41 includes a first moving contact pin 411 and a second moving contact pin 412, and the static contact 42 is provided with a first static contact piece 421 and a second static contact piece 422. The arc extinguishing system 5 includes a first arc extinguishing chamber 51 and a second arc extinguishing chamber 52 arranged side by side. Th...

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Abstract

A miniature circuit breaker with double breakpoint current limiting. The problem of poor breaking capacity of the existing miniature circuit breaker is solved. It includes a housing, an operating mechanism, a contact system and an arc extinguishing system. The contact system includes moving contacts and static contacts. The housing includes a front cover and a rear cover. The moving contacts are It includes a first movable contact pin and a second movable contact pin, the static contact is provided with a first static contact piece and a second static contact piece, and the arc extinguishing system includes a first arc extinguishing chamber and a In the second arc extinguishing chamber, a baffle is provided in the housing, and the baffle and the front cover form a first accommodating chamber, and the baffle and the rear cover form a second accommodating chamber. A moving contact foot, the first static contact piece, and the first arc extinguishing chamber are all arranged in the first accommodating cavity, and the second moving contact foot, the second static contact piece, and the second arc extinguishing chamber are all arranged in the second accommodating chamber. Two accommodation chambers. The invention has the advantages of convenient assembly, reliable breaking and arc extinguishing, strong current limiting capability, wide application range and the like.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a small circuit breaker with double breakpoint current limiting. Background technique [0002] Low-voltage circuit breaker is an indispensable electrical component in power distribution lines. It is generally used to break and close circuits in power distribution lines and has functions such as short-circuit protection and overload protection. It is a key product in power systems. . A low-voltage circuit breaker is generally composed of contacts, an arc extinguishing chamber, an operating mechanism and an overcurrent tripping mechanism. Normally, the operating mechanism keeps the contact mechanism closed or separated through the transmission mechanism to cut off or connect the power circuit. When the fault current arrives, the overcurrent trip mechanism detects the fault signal, sends a trip signal to the operating mechanism, trips and unlocks the lock, and drives the contact mechanism to o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H73/18
Inventor 叶志伟张勇陈志强
Owner FATO MECHANICAL & ELECTRICAL
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