22
3 Description
3.6.3 Opening
Actuating tripping coil 18.8 releases OPEN latch 18.9. The contacts of interrupter unit 22 are separated by
opening spring 18.11 via connecting rod 18.27, operating lever 18.24, operating mechanism rod 18.27.1, lever
15.9, torque shaft 15.8.3 and operating rod 16.9. The kinetic energy at the end of the opening cycle will thereby
be absorbed by opening damper 18.15. Opening damper 18.15 simultaneously serves as an end stop for the
opening cycle.
3.6.4 Operating Sequence
In the closed position of the circuit-breaker, the opening and closing spring are in charged state. This means the
circuit-breaker is in a position to perform O-C-0 switching sequences.
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