Load break switch with transparent internal shield

Details Load break switch with transparent internal shield Load break switch with transparent internal shield

1977-02-14

1978-08-29

Christian, Leonard D.

Electricity: circuit makers and breakers

Electric switch details

Cases and bases

361424, H01H 902, H01H 1304, H01H 1904, H01H 2104

Patent

active

041105842

ABSTRACT:
A high current, low voltage, load-break switch of the type which is installed in a housing having an access door. The switch comprises a fixed contact, a movable contact which is movable between a closed position in bolted pressure contact with the fixed contact and an open position which is displaced from the fixed contact. A mechanism is provided for rapidly opening and closing the switch by driving the movable contact to its closed position and also to its open position. A transparent shield is supported across the front of the switch contacts to visually expose the switch contacts when the access door to the housing is open while providing protection in the event of electrical arcing and mechanical failure of the switch contacts.

REFERENCES:
patent: 1466481 (1923-08-01), Ridgely
patent: 2641636 (1953-06-01), Born et al.
patent: 3443252 (1969-05-01), Spinelli et al.
patent: 4020432 (1977-04-01), Erickson et al.

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