Molded case circuit breakers with reduced contact bounce

Details Molded case circuit breakers with reduced contact bounce Molded case circuit breakers with reduced contact bounce

H - Electricity

01

H

306/287

H01H 3/46 (2006.01)

Patent

CA 1270875

41PC-6313 MOLDED CASE CIRCUIT BREAKER WITH REDUCED CONTACT MOUNTS ABSTRACT OF THE DISCLOSURE A molded case industrial breaker is provided with a shortened contact separation distance upon manual operation to reduce the stresses imposed upon the breaker operating mechanism when the breaker is manually operated to open or close the contacts. A camming surface is provided on the cradle operator to provide a stop for the toggle pin both upon opening as well as upon closing the contacts. The decreased separation which occurs between the contacts upon manual operation allows a savings in the amount of contact braid material as well as reducing the size of both the fixed and movable contacts. The decreased stresses on the mechanism correspondingly allows for a reduction in the material strength and mass of the breaker flexible connectors, operating springs, and contacts.

500262

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