Narrow multi-pole circuit breaker having inertia actuated overtravel for latch release
US3946345A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1975 |
| Grant date | Mar 23, 1976 |
| Priority date | — |
| Expiry date | Mar 4, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/1027
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A plurality of single pole circuit breakers stacked side-by-side are interconnected by a tie rod connecting the magnetic armatures of their respective instantaneous trip means. When one pole is caused to trip because of a fault condition, a driving formation on the releasable cradle of the faulted pole delivers a hammerlike blow to a cam means on the magnetic armature. The energy imparted to the armature by this blow causes the latch carried thereby to move in the tripping direction substantially beyond the point required for releasing the cradle latch in the faulted phase. This added movement assures that the tie rod shall transmit sufficient motion to all non-faulted poles to cause tripping thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.