3 Description
On completion of the closing cycle, cam 18.19 will run on roller 18.141.1 and transfer its residual kinetic energy to
damper for closing 18.41 (Fig. 13). Following this, roller 18.41.1 will jump behind cam 18.19 to prevent backward
swinging of charging shaft 18.14 (Fig. 15).
After leaving the cam disc 18.6, the lever 18.7 turns back a little towards OPEN, until the opening latch 18.9 is
resting on the roller of the supporting latch 18.9.1 (Fig. 14). The circuit-breaker is now latched in the CLOSED
position.
18.19 Cam
18.41.1 Roller
18.6 Cam disc
18.7 Lever
18.9 Opening latch
18.9.1 Supporting latch
Fig. 14 Function diagram of closing and opening latching:
Latching in the closed position
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