Molded case circuit breaker movable contact arm arrangement
AssigneeGeneral Electric Company
InventorsRaymond K. Seymour, Marshall B. Hart, Gary D. Magnon, Michael C. von Kannewurff, Dennis J. Doughty
Life of this patent
Estimating the term…
Abstract
A molded case circuit breaker having a pair of movable contact arms arranged within a single pole utilizes a shunt clip between the movable contact arms to insure electrical continuity between the contact arms and the support base during intense short circuit interruption. A compression spring-driven camming arrangement insures good electrical connection between the circuit breaker contacts under steady quiescent operating conditions while preventing reclosing of the contacts during short circuit interruption.
Claims10
A current limiting circuit interrupter comprising:
- a molded plastic case and cover;
- a movable contact arm support within said case having load terminal screw receiving means formed at one end and movable contact arm attachment means formed at an opposite end thereof;
- a movable contact arm supported within said movable contact arm attachment means and arranged for driving a movable contact out of electric connection with a fixed contact upon occurrence of an intense overcurrent condition through said contacts;
- and
- a shunt clip attached to said movable contact arm support and abutting said movable contact arm to thereby maintain electric connection between said movable contact arm support and said movable contact arm when said movable contact is driven out of electric connection with said fixed contact.
Dependencies are inferred from the claim text.