Circuit breaker having equalized poles

Patent metadata

Field	Value
Publication number	US-9779903-B2
Application number	US-201514820651-A
Country	US
Kind code	B2
Filing date	Aug 7, 2015
Priority date	Sep 11, 2014
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

The circuit breaker includes two polarities each including two poles connected in parallel, each pole having a switch and a tripping device. Each of the polarities has an equalizer electrically connecting the link between the switch and the tripping device of a first pole and the link between the switch and the tripping device of the second pole.

First claim

The invention claimed is:

1. A circuit breaker comprising:
a first link having a first polarity; and
a second link having a second polarity that is opposite the first polarity,
each of the first link and the second link including two poles connected in parallel, each pole having a switch and a tripping device,
wherein each of the first link and the second link has an equalizer electrically connecting a link between the switch and the tripping device of a first pole and a link between the switch and the tripping device of the second pole,
wherein the circuit breaker is partitioned into tripping blocks, each tripping block including a housing and four tripping devices each belonging to a pole, and
wherein each tripping device further includes a fixing and connecting lug, electrically connected to the conductive portions of the tripping device, that forms the electrical link to the switch of each pole and projects outside the tripping block housing.

2. The circuit breaker according to claim 1 , wherein the equalizers are cables or braids of conductive wires.

3. The circuit breaker according to claim 1 , wherein the equalizers are fixed to conductive portions of the tripping devices that form the links between the switches and the tripping devices.

4. The circuit breaker according to claim 1 , wherein the equalizers are fixed to conductive portions of the switches that form the links between the switches and the tripping devices.

5. The circuit breaker according to claim 1 , wherein the equalizer is a bow comprising lateral branches formed by conductive portions of two adjacent tripping devices, these conductive portions forming the links between the switches and the tripping devices.

6. The circuit breaker according to claim 1 , wherein the equalizer is a conductive bow forged from a folded metal plate and includes a central conductive braid affixed onto a connecting lug on each end, the equalizer being forged in the shape of a handle.

7. The circuit breaker according to claim 1 , wherein an equalizer connected to the fixing and connecting lug has at least a portion of the equalizer outside the tripping block housing.

8. The circuit breaker according to claim 1 , wherein the value of the resistance of the equalizer is no more than at the same order of magnitude as the value of the resistance of each of the tripping devices.

9. The circuit breaker according to claim 8 , wherein the value of the resistance of the equalizer is less than three times the value of the resistance of each of the tripping devices.

10. The circuit breaker according to claim 1 , wherein the equalizer is a conductive bow.

11. The circuit breaker according to claim 10 , wherein the conductive bow has two fixing lugs provided with hole.

12. The circuit breaker according to claim 11 , wherein the conductive bow is fixed by screws.

Assignees

• Schneider Electric Ind Sas

Inventors

• Nereau Jean-Pierre

Classifications

• H01H71/1045

  Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop · CPC title

• H01H71/08

  Terminals; Connections · CPC title

• H01H71/52

  actuated by lever · CPC title

• H01H71/00

  Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 · CPC title

• H01H71/082 Primary

  Connections between juxtaposed circuit breakers · CPC title