Varistor fuse element
US4652964A · kind A · utility
30Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 1984 |
| Grant date | Mar 24, 1987 |
| Priority date | — |
| Expiry date | May 21, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H83/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Varistor fuse element for protecting an electric circuit against overvoltages, including a thermal fuse, a varistor combined with the thermal fuse for for tripping the thermal fuse with joulean or ohmic heat losses of the varistor, first and second conductors for supplying current to the fuse element, and first and second switch contacts each being connected to a respective one of the conductors for bridging the varistor, the contacts being closed when the thermal fuse is tripped by the varistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.