Laminated copper assembly

Details Laminated copper assembly Laminated copper assembly

H - Electricity

01

H

306/349

H01H 71/00 (2006.01)

Patent

CA 1338593

A laminated contact assembly is formed from a number of individual contact assemblies. Each in- dividual contact assembly includes a contact arm por- tion, which carries a movable main or arcing contact and a stationary conductor portion. A flexible shunt is used to connect the contact arm portion to the stationary conductor portion. Intermediate individu- al contact assemblies are provided with T-shaped slots for receiving square-headed fasteners. These square-headed fasteners are captured by adjacent as- semblies once the laminated contact assembly is com- plete. By providing such an arrangement, the need to drill and tap holes in the base of the laminated con- tact arm assembly is obviated. Since all of the in- dividual contact arm assemblies are fastened to- gether, the possibility of the square-headed fasten- ers disposed in T-shaped slots in intermediate indi- vidual contact arm assemblies is greatly reduced. The flexible shunt is wound from a continuous strip of an electrical conductor and formed into a V-shaped member having extending leg portions which generate magnetic repulsion forces during overcurrent condi- tions. By utilizing a form wound shunt the cost of the contact arm assembly can be greatly reduced.

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