Insulator mounting for panelboard
US4301493A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1979 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Feb 7, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B1/056
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The following specification describes a panelboard assembly comprising a plurality of modular insulators having spaced integrally formed resilient mounting rails for supporting a circuit breaker housing above the panelboard bus bars. Each circuit breaker is connected to a bar carrying current of one phase and on tripping may generate ionized arc gases that exit the arc chute passage and engage a bus bar carrying current of another phase. A thermoplastic insulating material is interposed in the path between the arc chute passage and a bus bar carrying current of another phase. A bend is also introduced in the bus bars intermediate their ends to force an insulating member interposed between the bus bars and a cabinet wall against the cabinet wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.