Molded case circuit breaker

Patent metadata

Field	Value
Publication number	US-9847200-B1
Application number	US-201715483374-A
Country	US
Kind code	B1
Filing date	Apr 10, 2017
Priority date	Dec 2, 2016
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

The present disclosure relates to a molded case circuit breaker. In accordance with one aspect of the present disclosure, a molded case circuit breaker for use in connection with a main busbar provided on a distribution board panel includes a power-source-side terminal provided to a front portion of a case and having a terminal assembly hole formed at an upper portion thereof; a base bus supporter comprising a connector protruding from a front surface thereof so as to engage with the main busbar installed on one side of the distribution board panel, the base bus supporter being coupled to an upper surface and a lower surface of the power-source-side terminal; an auxiliary cover plate coupled to an upper portion of the power-source-side terminal and provided with a temperature measurement hole communicating with the terminal assembly hole.

First claim

What is claimed is:

1. A molded case circuit breaker, comprising:
a power-source-side terminal provided to a front portion of a case and having a terminal assembly hole formed at an upper portion thereof;
a base bus supporter comprising a connector protruding from a front surface thereof so as to engage with the main busbar installed on one side of the distribution board panel, the base bus supporter being coupled to an upper surface and a lower surface of the power-source-side terminal;
an auxiliary cover plate coupled to an upper portion of the power-source-side terminal and provided with a temperature measurement hole communicating with the terminal assembly hole, the auxiliary cover plate being coupled with a part of the base bus supporter to support the base bus supporter from the outside.

2. The molded case circuit breaker according to claim 1 , wherein an upper portion and a lower portion of the base bus supporter are provided with an upper surface coupling portion and a lower surface coupling portion, respectively, the upper surface coupling portion and the lower surface coupling portion protruding rearward so as to be coupled to the upper surface and the lower surface of the power-source-side terminal, respectively.

3. The molded case circuit breaker according to claim 2 , wherein the upper surface coupling portion is provided with a fastening part coupled to the upper surface of the power-source-side terminal to couple the upper surface coupling portion to the power-source-side terminal,
wherein the fastening part is formed to protrude rearward from the upper surface coupling portion, and is arranged at a position where the fastening part does not interfere with the terminal assembly hole.

4. The molded case circuit breaker according to claim 1 , wherein the auxiliary cover plate is provided with an insertion groove concavely formed to allow a part of the upper surface coupling portion to be inserted thereinto.

5. The molded case circuit breaker according to claim 1 , wherein the auxiliary cover plate is provided with a connection conduit for connecting the temperature measurement hole and the terminal assembly hole,
wherein the connection conduit protrudes from the auxiliary cover plate so as to enclose a passage connecting the temperature measurement hole and the terminal assembly hole.

6. The molded case circuit breaker according to claim 1 , wherein the auxiliary cover plate comprises a plurality of coupling holes for coupling the auxiliary cover plate to the upper surface of the power-source-side terminal.

7. The molded case circuit breaker according to claim 1 , wherein a diameter of the temperature measurement hole is smaller than a diameter of the terminal assembly hole.

8. The molded case circuit breaker according to claim 1 , wherein a temperature sensor is provided in the terminal assembly hole.

9. The molded case circuit breaker according to claim 8 , further comprising:
a notification means configured to alert a user when a temperature value of the temperature sensor is higher than or equal to a set temperature, the notification means comprising a light emitting means or a sound generating means.

10. The molded case circuit breaker according to claim 1 , wherein an interior of the power-source-side terminal is provided with a fixed contact arm and a connection member for connecting the fixed contact arm to the main busbar,
wherein the connection member is exposed to an outside of the molded case circuit breaker through a passage formed by the terminal assembly hole and the temperature measurement hole.

Assignees

• Lsis Co Ltd

Inventors

• Park Jae-Won

Classifications

• H02B1/20

  Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards (installations of bus-bars H02G5/00) · CPC title

• G01K1/02

  Means for indicating or recording specially adapted for thermometers · CPC title

• H01H71/02 Primary

  Housings; Casings; Bases; Mountings · CPC title

• H01H2011/0068

  measuring the temperature of the switch or parts thereof · CPC title

• H01H71/08 Primary

  Terminals; Connections · CPC title