Magnetic device for a magnetic trip unit
US6794963B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Jul 8, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H1/2041
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic trip unit for actuating a latching mechanism to trip a circuit breaker upon an overcurrent condition, the magnetic trip unit includes: a flux return component in electromagnetic communication with an electrically conductive strap; a tube disposed within the flux return component; a stator disposed at a first end of the tube and connected to the flux return component, the stator having a stator surface at one end; and a plunger slidably extending from a second end of the tube, the plunger comprises a plunger surface at one end facing the stator surface, the plunger further includes another end adapted to operably interact with the latching mechanism, the plunger is biased to a predetermined gap position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.