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Double-breakpoint current-limiting miniature circuit breaker

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, convenient assembly, and strong current limiting capacity

Active Publication Date: 2014-12-17
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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  • Double-breakpoint current-limiting miniature circuit breaker
  • Double-breakpoint current-limiting miniature circuit breaker
  • Double-breakpoint current-limiting miniature circuit breaker

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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

The invention discloses a double-breakpoint current-limiting miniature circuit breaker which solves the problem of poor breaking capacity of an existing miniature circuit breaker. The double-breakpoint current-limiting miniature circuit breaker comprises a shell, an operating mechanism, a contact system and an arc-extinguishing system, wherein the contact system comprises a movable contact and a fixed contact; the shell comprises a front cover and a back cover; the movable contact comprises a first movable contact pin and a second movable contact pin; the fixed contact is provided with a first fixed contact sheet and a second fixed contact sheet; the arc-extinguishing system comprises a first arc-extinguishing chamber and a second arc-extinguishing chamber, both of which are arranged side by side; the shell is internally provided with a clapboard; the clapboard and the front cover form a first containing cavity; the clapboard and the back cover form a second containing cavity; the first movable contact pin, the first fixed contact sheet and the first arc-extinguishing chamber are arranged in the first containing cavity; the second movable contact pin, the second fixed contact sheet and the second arc-extinguishing chamber are arranged in the second containing cavity. The double-breakpoint current-limiting miniature circuit breaker has the advantages of being convenient to assemble, reliable in breaking and arc-extinguishing, strong in current-limiting capability, wide in 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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IPC IPC(8): H01H73/18
Inventor 叶志伟张勇陈志强
Owner FATO MECHANICAL & ELECTRICAL
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