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Safety circuit breaker for AC low-voltage power distribution cabinet

A technology for power distribution cabinets and circuit breakers, applied in the field of safety circuit breakers, can solve the problems of poor heat dissipation effect of circuit breakers and inability to further reduce the size of circuit breakers, and achieve the effects of reducing temperature, avoiding secondary discharge, and reducing concentration

Inactive Publication Date: 2016-09-21
河北梅特电气设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this structure requires a large number of arc extinguishers, so that the size of the circuit breaker cannot be further reduced, and at the same time, the heat dissipation effect of the circuit breaker is deteriorated

Method used

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  • Safety circuit breaker for AC low-voltage power distribution cabinet
  • Safety circuit breaker for AC low-voltage power distribution cabinet
  • Safety circuit breaker for AC low-voltage power distribution cabinet

Examples

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Embodiment Construction

[0017] The standard parts used in the present invention can be purchased from the market, and the special-shaped parts can be customized according to the instructions and the accompanying drawings. The specific connection methods of each part adopt mature bolts, rivets, welding in the prior art , pasting and other conventional means, no longer described in detail here.

[0018] refer to Figure 1-4 , a specific embodiment of the invention includes a static contact 1 and a movable contact 2, the movable contact 2 includes two symmetrically arranged arc-shaped shrapnel 3, the arc-shaped shrapnel 3 selectively contacts the static contact 1, and the arc-shaped shrapnel 3 is provided with a rack 4, and the rack 4 is connected with a driving mechanism 5, and a main gear set 6 is meshed on both sides of the rack 4, and a plurality of pinion gears 8 are connected to the gear set 6 through a chain 7, each The pinion gear 8 is axially connected with an insulating grid plate 9 . The ou...

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Abstract

The invention discloses a safety circuit breaker for an AC low-voltage power distribution cabinet. The safety circuit breaker comprises a fixed contact and a movable contact, wherein the fixed contact comprises two arc-shaped spring plates which are symmetrically arranged; the arc-shaped spring plates and the fixed contact are in selective contact; a rack is arranged at the upper part of the arc-shaped spring plates and is connected with drive mechanisms; each of two sides of the rack is meshed with a main gear bank; each gear bank is connected with a plurality of secondary gears through chains; and each secondary gear is coupled to an insulated gate plate. By the safety circuit breaker for the AC low-voltage power distribution cabinet, the defects in the prior art can be improved; the volume occupied by an arc extinguishing device in the circuit breaker is reduced; and the heat dissipation effect of the overall circuit breaker is improved.

Description

technical field [0001] The invention relates to the technical field of electrical accessories, in particular to a safety circuit breaker for an AC low-voltage power distribution cabinet. Background technique [0002] A circuit breaker refers to a device that can close the current infrequently in a normal circuit and has a certain overload and short-circuit protection capability. The short-circuit protection function of the circuit breaker is mainly to cut off the faulty circuit through the cooperation of the electromagnetic system, arc extinguishing device and its operating mechanism, so as to play the role of circuit protection. The short-circuit protection function of the circuit breaker has the characteristics of short-circuit breaking time, which can protect the load of the power transmission and distribution system from the damage of the short-circuit current. When the circuit breaker operates, a strong arc will be generated instantaneously due to the existence of high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/18H01H73/04H01H9/52
CPCH01H9/52H01H73/04H01H73/18
Inventor 侯国亮
Owner 河北梅特电气设备有限公司
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