
1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013
21
Charging Motor
Closing Spring
Opening Spring
Contact Spring
Closing Coil
Open Coil
Circuit Breaker
Charged
Discharged
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Charged
Discharged
Charged
Discharged
Control voltage available to charging motor
Closing Spring Charged
Close Signal
Start of Closing Operation
Close operation complete
Closing spring discharged
Opening spring charged
Compression Springs charged
Closing Spring Charged
Start of Opening Operation
Open operation complete
Opening springs discharged
Compression Springs discharged
Closing Time
Opening Time
Figure 3: Sequence of Circuit Breaker Operation
(not to scale)
MECHANISM AND OPERATION