Four-pole low voltage circuit breaker
US4383146A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1981 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Mar 3, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/1036
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A four-pole circuit breaker has an operating mechanism associated with one of the intermediate main poles, so as to take up an asymmetrical position with respect to the layout of the four poles. The mechanism has springs similar to those of a three-pole breaker. The transverse tie bar is common to the three main poles and is mechanically coupled to a kinetic linkage controlling the fourth pole, so as to bring about the closure of the contacts of the fourth pole before the closure of the contacts of the main poles upon closing of the breaker, in order to match the four-pole load torque to the three-pole motor torque of the mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.