Molded case circuit breaker with contact on mechanism

A technology of contact mechanism and circuit breaker, applied in the direction of operation/release mechanism of protection switch, circuit, parts of protection switch, etc.

Active Publication Date: 2009-02-11
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may cause the problem of not being able to perform a contact ope

Method used

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  • Molded case circuit breaker with contact on mechanism
  • Molded case circuit breaker with contact on mechanism
  • Molded case circuit breaker with contact on mechanism

Examples

Experimental program
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no. 1 approach

[0084] According to the first embodiment of the present invention, under the condition that the molded case circuit breaker with the contact mechanism should be tripped, when the contacts are not separated from each other due to contact melting adhesion etc., even if the user tries to move the handle To the off (reset) position, the reset operation cannot be performed. If the handle 6 is released, the closed position is indicated, thus notifying the user that the molded case circuit breaker is conductive. Therefore, the user can properly take required actions for safety.

[0085] For example, by manipulating a previous stage circuit breaker device such as the main circuit breaker in the previous stage near the supply side, the user can disconnect any further overcurrent conduction and resort to disconnecting the molded case circuit breaker that caused the confusion Actions for wiring, replacement, maintenance, etc.

[0086] Figure 8 is a perspective view illustrating main ...

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PUM

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Abstract

A molded case circuit breaker having a contact on mechanism which can perform a trip operation and automatically rotates the handle to the on position or a position toward the on position if the handle is manipulated to move to the off (or reset) position in a state that the contacts are melt-adhered to each other, the contact on mechanism, including: a contact on plate which is vertically movable by being guided according to the operation of the switching mechanism, a trip bar that drives the restricting unit to a releasing position, a lever connected to the handle and that provides a pivot point of the handle, a lever pin fixed to the lever, for driving the restricting unit to the releasing position by pressing the trip bar, and thereby operating the switching mechanism to the trip position, and a trip spring providing an elastic driving force for enabling the switching mechanism to operate to the trip position when the restricting unit is moved to the releasing position.

Description

[0001] related application [0002] This disclosure is related to Korean Applications Nos. 10-2007-0080900, 10-2007-0080902, and 10-2007-0080903 filed on Aug. 10, 2007, which are the subject matter contained in the Priority Document, the entire contents of which are hereby incorporated by reference refer to. technical field [0003] The present invention relates to molded case circuit breakers, and more particularly, to molded case circuit breakers having contact mechanisms. Background technique [0004] Generally, a molded case circuit breaker is a protective device that protects electrical load equipment and wires against overload or overcurrent that may occur in the circuit by automatically breaking the circuit. In such molded case circuit breakers, the position of the handle manually manipulated by the user can be divided by the switching mechanism into a mechanism trip position (ie, TRIP position), a circuit disconnection position (ie, OFF position, in other words RES...

Claims

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Application Information

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IPC IPC(8): H01H71/04H01H71/50H01H71/62
CPCH01H71/123H01H71/501H01H71/52H01H73/50
Inventor 宋重千林祥桓姜圣宇
Owner LSIS CO LTD
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