Patent ID: 6307455
Filing Date: 2001-10-23
Classification: H01H

Abstract:
Circuit breaker control mechanism comprising a manually controlled part (40b) used to put the switch into the On and off and Reset positions, and a trip part (40c) comprising an electromagnetic tripping device (41), a pivoting latch-in lever (67) and a pivoting control lever with a pawl (66) normally held in position by the latch and acted upon by a trip spring (65), the tripping device pivoting the latch-in lever and detaching the control lever to open the contacts, in response to an overcurrent characterized by the fact that:an oscillating lever (64) mounted free to pivot about an axis (O5) is coupled with the manually controlled part (40b),the trip spring (65) exerts an opening torque on the control lever (66) through a first bearing point (O7) and a return torque on the oscillating lever (64) through a second bearing point (O6).