Electrical distribution systems

Details Electrical distribution systems Electrical distribution systems

1978-01-18

1980-01-15

McGlynn, Joseph H.

Geometrical instruments

339 22B, H01R 1368

Patent

active

041836081

ABSTRACT:
A fused tap-off unit for a busbar system is disposed in a length of trunking through which busbars extend. The trunking has a cover inside which fuses are fitted. The fuses interconnect contact blades of which a first set contact the busbars when the cover is closed and a second set contact tap-off terminals loosely secured in insulators. When the cover is opened by pivoting about a hinge axis, the contact blades secured to the cover are withdrawn, whereby the fuses and the tap-off terminals are isolated from the busbars. The busbars also extend through the insulators so that there is no danger of touching live parts when the cover is opened.

REFERENCES:
patent: 2318861 (1943-05-01), Huguelet
patent: 2334810 (1943-11-01), Demask
patent: 2423227 (1947-07-01), Cole
patent: 2581308 (1952-01-01), Smith
patent: 3056870 (1962-10-01), Andres
patent: 3107283 (1963-10-01), Durham
patent: 3154722 (1964-10-01), Cole
patent: 3202788 (1965-08-01), George
patent: 3229066 (1966-01-01), Rowe

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