Circuit breaker with thermal sensing unit
US5966281A · kind A · utility
12Cited by
7References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 1998 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | May 6, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2083/201
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit protection apparatus includes a circuit breaker coupled in series with a circuit to be protected. The circuit breaker has a trip input and is responsive to a trip signal at the trip input for changing from a closed circuit condition to an open circuit condition to thereby remove electrical current from the circuit to be protected. A thermal trip element is coupled in series with the circuit to be protected and is responsive to a predetermined current/time characteristic of current flow in the circuit for delivering the trip signal through the thermal trip element to the trip input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.