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Insertion type circuit breaker

A plug-in type, circuit breaker technology, applied in the direction of circuit breaker components, circuits, circuit breakers with excessive current, etc., can solve problems such as arcing

Inactive Publication Date: 2007-02-28
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In addition, when the inserted circuit breaker body 1 is removed in a state where the trip lever 13 is fixed, the safety trip device does not perform a trip action, so there is a problem of arcing when the connector 3 is separated from the insertion post 10.

Method used

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  • Insertion type circuit breaker
  • Insertion type circuit breaker
  • Insertion type circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] [Embodiment 1]

[0038]Fig. 1 is a longitudinal sectional view of main parts of the plug-in circuit breaker according to Embodiment 1 of the present invention after the breaker body is removed from the mounting base, and Fig. 2 is a main part of the upper surface of the circuit breaker body of Fig. 1 viewed from the load side As a cross-sectional view, Fig. 3 is an enlarged perspective view of a safety trip device of a plug-in circuit breaker according to Embodiment 1 of the present invention.

[0039] In Fig. 1 and Fig. 2, the circuit breaker body 1 has: a trumpet-shaped connector 3 as a contact member for connection, which is held by a predetermined contact pressure by the action of a pressure spring 2, is installed in a housing of a shaped insulator. The plug-in terminal 4 used as a terminal connection member on the power supply side and the load side; the power supply side terminal 5 and the load side terminal 6 respectively mounted on the plug terminal 4; the elect...

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PUM

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Abstract

An insertion type circuit breaker comprises a trip rod which actuates an on / off contactor for opening and closing a circuit carrying a load current and a trip mechanism for opening this on / off contactor, a lever which acts on the trip rod when a breaker main body is inserted into a mount base or removed from the mount base, an elastic member which energizes this lever, and a lock mechanism part which locks the lever by resisting the energization force of the elastic member when the breaker main body is out of the mount base. Thus, this circuit breaker facilitates on / off check ever when the braker main body is out of the mount base and makes intrinsic trip actions when the braker main body is inside the mount base with the trip rod fixed, and when out of the mount base.

Description

technical field [0001] The present invention relates to a plug-in circuit breaker with a circuit breaker body that can be assembled and disassembled relative to a mounting seat, and in particular to a plug-in circuit breaker with a safety tripping device that opens a switch contact and disconnects a load current during assembly and disassembly . Background technique [0002] 8 is a longitudinal sectional view of main parts showing a state in which a circuit breaker body of a conventional plug-in circuit breaker shown in, for example, WO 01 / 27959 is inserted into a mounting seat. [0003] Fig. 9 is an enlarged cross-sectional view after releasing the engagement with the trip mechanism part of the safety trip device constituting the plug-in circuit breaker in Fig. 8, (a) is an enlarged side cross-sectional view, and (b) is the upper surface of (a) It is a sectional view of main parts, (c) is an enlarged internal perspective view showing the fitting state of the trip bar and t...

Claims

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Application Information

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IPC IPC(8): H01H73/08H01H73/00H01H71/12
CPCH01H73/08H01H71/126H01H1/5866H01H71/08
Inventor 川上兼弘石川晶
Owner MITSUBISHI ELECTRIC CORP