Current limiting switch capable of rapid circuit breaking
US4319210A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1980 |
| Grant date | Mar 9, 1982 |
| Priority date | — |
| Expiry date | May 19, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/2409
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Current limiting switch for rapid circuit breaking, including at least one pair of contacts, one contact being mounted stationary and the other being mounted on a movable arm. The contact arm is rotatable about a fixed point upon surpassing a predetermined current threshold value, by means of an electromagnet energized by the current passing through the switch. The electromagnetic means comprise an electromagnet and a first and a second armature cooperating with the electromagnet, in which the first armature drives the movable contact in the direction of disengagement and the second armature releases a locking device, which blocks the movable contact in the direction of movement until the current threshold is reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.