# US 10,319,542 B2 · Electric arc-control device

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,319,542 B2
- Document ID: US10319542B2
- Status: Granted
- Kind: B2
- Application number: 15/521,368
- Filed: 2015-10-20
- Published: 2017-10-26
- Granted: 2019-06-11
- Earliest claimed: 2014-10-22
- Assignees: Socomec
- Applicants: Socomec
- Inventors: Jérôme Hertzog
- Web page: https://patentgrep.com/patent/US10319542B2

## CPC

- H01H 33/20: using arcing horns (using blow-out magnet H01H33/18)
- H01H 9/34: Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H 9/46: using arcing horns (using blow-out magnet H01H9/44)
- H01H 33/08: Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H 73/18: Means for extinguishing or suppressing arc {(magnet coil acting as blow-out device H01H71/38)}
- H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00)

## Abstract

An electric arc breaker device comprises a contact zone in which there are present at least one stationary contact and at least one movable contact that is movable relative to the stationary contact. The contacts are capable of being put into contact with each other and of being separated from each other. An arcing horn is present facing the stationary contact, the height hc of the arcing horn being greater than or equal to the height ht of the stationary contact, and the arcing horn presenting a folded-back arc switching portion extending in a direction away from the stationary contact.

## Claims

### Claim 1

An electric arc breaker device comprising:
a contact zone in which there are present at least one stationary contact and at least one movable contact that is movable relative to the stationary contact, the contacts being capable of being put into contact with each other and of being separated from each other; and
an arcing horn present facing the stationary contact, a height hc of the arcing horn being greater than or equal to a height ht of the stationary contact, and the arcing horn presenting a folded-back arc switching portion extending in a direction away from the stationary contact;
the device being present in a box and the arcing horn having a width L equal to an inside width of said box,
wherein the arcing horn comprises a first portion facing the stationary contact extending from a first end located beside a stationary support to a second end forming a bend of the arcing horn, said bend being present at a height greater than the height ht, of the stationary contact, and
wherein the arcing horn further comprises a second portion forming the folded-back arc switching portion which extends from the second end and which is superposed to a material of the first portion, and
wherein a width of the first portion varies to reach a maximum value between the first end and the second end.

### Claim 2 (depends on 1)

The device according to claim 1, wherein it further includes an extinction chamber containing a stack of electric arc splitting plates present facing the arcing horn.

### Claim 3 (depends on 1)

The device according to claim 1, wherein it does not include a stack of electric arc splitting plates.

### Claim 4 (depends on 1)

The device according to claim 1, wherein a material forming the arc switching portion has a change-of-state temperature that is higher than the change-of-state temperature of a material forming the stationary contact.