Contact arrangement for electric switching devices

Details Contact arrangement for electric switching devices Contact arrangement for electric switching devices

1990-04-27

1991-07-09

Recla, Henry J.

Electricity: circuit makers and breakers

Electric switch details

Latches

200244, 200248, 335 16, 335147, 335195, H01H 152, H01H 122, H01H 7500, H01H 300

Patent

active

050308041

ABSTRACT:
The invention relates to a contact arrangement, particularly intended for current-limiting low-voltage circuit breakers, with a double-break movable contact arm, the central part of which is attached to an insulating shaft which is rotatably journalled in elongated holes in stand parts on each side of the contact arm. In the closed position of the arrangement, the movable contact arm is pressed against two U-shaped fixed contact arms with the aid of two torsion springs. The contact arms have flat shape and are arranged with their broad sides facing each other. The shaft consists of two sleeve-formed holders surrounding the torsion springs. One holder exhibits a stop face for a latching member for arresting the movable contact arm in the open position.

REFERENCES:
patent: 4039983 (1977-08-01), Terracol et al.
patent: 4649247 (1987-03-01), Preuss et al.
patent: 4910485 (1990-03-01), Mobleu et al.

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