Opening, Closing, and Resetting the Circuit Breaker
Opening and Closing Locally
-
To close the circuit breaker, move the toggle handle from the O (OFF) position to the I (ON) position.
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To open the circuit breaker, move the toggle handle from the I (ON) position to the O (OFF) position.
Resetting After a Trip on Electrical Fault
The circuit breaker has tripped on electrical fault, the toggle handle
has moved from the I (ON) position to the Trip 
position.
 WARNING |
|---|
|
HAZARD OF CLOSING ON ELECTRICAL FAULT
Do not close the circuit breaker again without first inspecting
and, if necessary, repairing the downstream electrical equipment.
Failure to follow these instructions can result in death, serious injury, or equipment
damage.
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The fact that a circuit breaker has tripped does not remedy the cause of the fault detected on the downstream electrical equipment.
To reset after a fault trip:
|
Step |
Action |
Position |
|
|---|---|---|---|
|
1 |
– |
Isolate the feed (refer to maintenance and servicing work on installation) before inspecting the downstream electrical equipment. |
|
|
2 |
– |
Look for the cause of the detected fault. |
|
|
3 |
– |
Inspect and, if necessary, repair the downstream equipment. |
|
|
4 |
– |
Inspect the equipment in the event of a short-circuit trip. |
|
|
5 |
Reset the circuit breaker by moving the toggle handle to O (OFF). |
O (OFF) |
|
|
6 |
 |
Close the circuit breaker by moving the toggle handle to I (ON). |
I (ON) |
