Disconnect switch with integrated thermal breaker
US9911567B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2015 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Jun 8, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H37/54
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A disconnect switch is disclosed with an integrated thermal breaker that can be disposed between a source of power and a circuit to be protected. The disconnect switch can comprise a housing, a first terminal coupled to a power source and a second terminal coupled to a load. The first terminal and the second terminal can be partially included in the housing. The disconnect switch comprises a bi-metal thermal conductive element made from at least two metal sheets with different thermal expansion coefficients and having a concave shape that engages the first and second terminals. Upon occurrence of an overload condition, heat flowing through the bi-metal thermal conductive element causes the concave shape to retract to a convex shape and disengage the bi-metal thermal conductive element from the first and the second terminals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.