JPH0177244U

JPH0177244U -

Info

Publication number: JPH0177244U
Application number: JP1987174108U
Authority: JP
Priority date: 1987-11-12
Filing date: 1987-11-12
Publication date: 1989-05-24

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による固定接触子
を示す斜視図、第２図は大電流時のアークスポツ
トの様子を示す第５図と同じ図、第３図は従来例
の回路しや断器の消弧室部を示す側面図、第４図
は第３図の固定接触子を示す斜視図、第５図は第
３図の線―の断面図である。図において、１，２は１対の電気接触子、１０
１，２０１は接点、３はアークランナー、４は絶
縁物、４０１は溝、５はアーク、６は消弧板、７
はアーク走行路、９は広がり部、１０はアークス
ポツトである。なお、各図中同一符号は同一また
は相当部分を示す。 Fig. 1 is a perspective view showing a fixed contact according to an embodiment of this invention, Fig. 2 is the same as Fig. 5 showing the appearance of an arc spot at the time of a large current, and Fig. 3 is a diagram showing the circuit diagram of a conventional example. FIG. 4 is a side view showing the arc extinguishing chamber of the disconnector, FIG. 4 is a perspective view showing the fixed contact in FIG. 3, and FIG. 5 is a sectional view taken along the line - in FIG. 3. In the figure, 1 and 2 are a pair of electrical contacts, and 10
1, 201 is a contact, 3 is an arc runner, 4 is an insulator, 401 is a groove, 5 is an arc, 6 is an arc extinguishing plate, 7
9 is an arc travel path, 9 is a widening portion, and 10 is an arc spot. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Claims for Utility Model Registration] (1) It has at least one pair of electrical contacts that are composed of a conductor and a contact fixed thereto and that open and close within the container, and at least one of the electrical contacts has at least one In a circuit or disconnector, an insulator is provided around the contact, and a groove in the insulator allows the arc at the time of opening to be transferred from the contact to an arc-extinguishing plate. A widening section is provided at a position farthest from the contact point of the arc running path, and the width of the arc running path in the direction intersecting the electric path of this widening section is wider than the width of the arc running path leading to the widening section. A circuit switch or disconnector characterized in that it is configured so that: (2) A pair of electrical contacts consists of a fixed contact and a movable contact, and the fixed contact has an arc runner that moves the arc from the contact toward the arc extinguishing plate, and the arc runner has an insulating member. A circuit breaker according to claim 1, wherein the arc running path is formed by a groove in a material, and the arc runner is provided with a widening portion.