Patent ID: 7482548

Claim:
An extended actuating device for a circuit breaker, said device including a trip assistance mechanism comprising: a body; a first rotary device integral in rotation with a control lever of the circuit breaker, said lever configured to assume, by rotation about a principal axis, several offset angular positions, including an on position, an off position or a tripped position according to an on, an off or a tripped status of the circuit breaker; a second rotary device integral in rotation with a remote control device, said second rotary device configured to assume several offset angular positions corresponding to the positions of the lever of the circuit breaker, said second rotary device being configured to be driven in rotation by the first rotary device as far as a first position corresponding to the tripped position of the lever of the circuit breaker; a return spring configured to force the second rotary device towards said first position; and a breakable mechanical link configured to release the return spring when the breakable mechanical link is broken, the breakable mechanical link comprising a shape that is complementary to a shape of the first rotary device and to a shape of the second rotary device, the alignment of the shape of the breakable mechanical link and the shapes of the first and second rotary devices resulting in the breaking of the mechanical link.