Protection device for an automatic circuit breaker and automatic circuit breaker comprising this device
US8587393B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2007 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Sep 5, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/2472
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a magnetic protection device, in particular for an automatic circuit breaker or a disconnecting switch, preferably for use in low voltage systems. The invention also relates to an automatic circuit breaker comprising this device. The protection device (1) according to the invention comprises a low voltage circuit breaker comprising an air gap magnetic circuit (T), provided with a first portion (10) forming a first surface (11) of said air gap (T) and a second portion (20) forming a second surface (21) of the air gap (T). The first portion (10) constitutes a fixed section of the magnetic circuit, while the second portion (20) constitutes a moving section of the magnetic circuit. The magnetic circuit also comprises a flexible portion (30) that connects the first portion (10) to the second portion (20) with continuity, forming an intermediate section of magnetic circuit interposed between the fixed section and the moving section. The third flexible portion (30) advantageously allows a relative movement of the second surface (21) of the air gap (T) with respect to said first surface (11). In its essential form, the protection device (1) comprises an act…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.