Line protector for communication circuit

Details Line protector for communication circuit Line protector for communication circuit

1975-07-28

1976-08-17

Miller, J D

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With longitudinally expansible solid element

317 16, 317 615, 337 18, 337 32, 337 33, 337 34, H02H 322, H02H 720

Patent

active

039756645

ABSTRACT:
A line protector includes a body having first and second end terminals and an intermediate terminal for connection to a ground potential. End caps are mounted on the end terminals and have peripheral edges maintained spaced from the intermediate terminal by means of a displaceable element responsive to excessive currents in the line being protected. High currents will cause the end caps to move toward the intermediate terminal and provide a short circuit therewith to ground to protect telephone equipment connected thereto. The intermediate terminal is mounted in a clip which has centering means formed therein to maintain the mechanical and electrical spacing of the intermediate terminal with respect to the end caps equal to one another. The protector assembly is mounted with a standard housing and base structure to be interchangeable with existing central office plug-in protectors.

REFERENCES:
patent: 2724793 (1955-11-01), Fisher
patent: 3254179 (1966-05-01), Howard

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