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Circuit breaker

A technology of circuit disconnection and disconnector, applied in circuits, electrical components, protection switches, etc., to prevent misconnection

Active Publication Date: 2011-05-04
KAWAMURA ELECTRIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Patent Document 2 describes that near the terminal opening of the load-side terminal, inside the disconnector housing, an up-and-down long display member is rotatably supported back and forth, and whether the wire is connected to the speed is displayed by the rotational position of the display member. The technique that the knot terminal fitting is connected surely

Method used

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Examples

Experimental program
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Embodiment 1

[0074] Such as figure 1 , figure 2 As shown, the circuit breaker 1 of the first embodiment has a synthetic resin breaker case 2 . The disconnector housing 2 is formed by combining a pair of left and right divided bodies 2a and 2b, and is formed in a square thin box shape. On the upper surface of the disconnector case 2, an operation lever 3 for opening and closing the circuit is provided so as to be rotatable in the forward and rearward directions. Three load-side terminals 4 and power-side terminals 5 are arranged in a row in the vertical direction on the front and rear surfaces of the disconnector case 2, respectively. An overcurrent detection mechanism and a disconnection mechanism (not shown) are provided inside the disconnector case 2, and when an overcurrent is detected, the circuit between the power supply side terminal 5 and the load side terminal 4 is disconnected.

[0075] Such as Figure 3 ~ Figure 5 As shown, the power supply side terminal 5 is a plug-in termi...

Embodiment 2

[0094] Second, based on Figure 13 to Figure 16 Embodiment 2 of the circuit breaker according to the present invention will be described. The circuit breaker 51 of the second embodiment differs from the circuit breaker 1 of the first embodiment in the configuration of a member that covers the terminal holes 7 of the load-side terminals 4 . The other configurations are the same as those in Embodiment 1, and the same symbols are assigned to the drawings, and description thereof will be omitted.

[0095] Such as Figure 13As shown, a cover member 18 for opening and closing the insertion opening 12 of the load-side terminal 4 and a sealing cover 52 for selectively covering the terminal opening 7 are installed between the front ends of the split bodies 2a and 2b of the disconnector housing 2. . The sealing cover 52 has an insertion portion 53 removably inserted into a selected one of the terminal openings 7 and an engaging portion 54 engaging with the front surface of the discon...

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Abstract

The invention relates to a circuit breaker of which an unthickened breaker shell can improve the function of load side terminals. In the circuit breaker (1) used in a single-phase three-wire circuit, an operating rod (3) for switching on or off the circuit is arranged on the upper surface of a thin box breaker shell (2); three load side terminals (4) and three power side terminals (5) are respectively arranged on the front surface and the back surface of the breaker shell (2) in the vertical direction; the front surface of the breaker shell (2) is provided with a terminal port (7) for connecting an electric wire (9) with quick-connect terminal joints of the load side terminals (4); the upper side of the terminal port (7) is provided with a confirmation window (11) for confirming the connecting state of the electric wire (9), and the lower side of the terminal port (7) is provided with an inserting port (12) for electrically connecting a measuring terminal of a measuring instrument with the quick-connect terminal joints; and a display mechanism is arranged behind the confirmation window (11) and in the breaker shell (2).

Description

[0001] This application is a divisional application of the application with the application number 200710180762.4 and the invention name "Circuit Breaker" submitted on October 12, 2007. technical field [0002] The present invention relates to a thin circuit breaker installed in a switchboard or the like, and particularly relates to a structure around a load-side terminal. Background technique [0003] Conventionally, a circuit breaker has been proposed in which the width of the disconnector case is reduced so that it can be installed compactly in a switchboard. For example, Patent Document 1 describes that an operating lever for opening and closing the circuit is provided on the upper surface of the disconnector case, and a plurality of load-side terminals are arranged vertically on the front and back of the disconnector case. A circuit breaker for single-phase three-wire circuits with terminals on the power supply side. [0004] Also, conventionally known is a circuit bre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/08H01H71/02
Inventor 加藤裕明
Owner KAWAMURA ELECTRIC INC
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