Bell alarm and lock-out for high ampere-rated circuit breakers
US5502286A · kind A · utility
30Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 1994 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | May 25, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/465
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A combined bell alarm and lock-out accessory is connected with the electronic trip unit that controls a high ampere rated circuit breaker. The accessory interacts with the circuit breaker operating mechanism to activate the bell alarm upon circuit interruption and to prevent the closing of the circuit breaker contacts until the accessory is manually reset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.