3 Description
3.7.3 Tripping
Actuating OPEN trip coil 18.8 releases OPEN latch 18.9 via supporting latch 18.9.1 and supporting lever 18.9.2.
Operating lever 18.24 and lever 18.7 are withdrawn by opening spring 18.11 over connecting rod 18.27 to the
OPEN position (Fig. 16). The contacts of interrupter unit 22 are simultaneously shifted to the OPEN position over
operating mechanism rod 18.27.1.
At the end of the opening movement the kinetic energy is absorbed by the damper (for opening) 18.15. The
damper serves also as end stop.
18.11 Opening spring
18.15 Damper for opening
18.24 Operating lever
18.27 Connecting rod (for opening spring)
18.27.1 Driving rod
18.7 Lever
18.8 Release OPEN
18.9 Opening latch
18.9.1 Supporting latch
18.9.2 Support lever
22 Interrupter unit
Fig. 16 Function diagram of closing and opening latching:
Disengagement of the opening latch
31
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