Locking a Circuit Breaker with a 9422 Toggle Handle
Locking Options for the 9422 Toggle Handle
 DANGER |
|---|
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HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
When the circuit breaker handle is locked in the O (OFF)
position, always use a properly rated voltage sensing device to confirm
power is off before working on equipment.
Failure to follow these instructions will result in death or serious injury.
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The Class 9422 circuit breaker operating mechanism can only be locked by locking the handle. The handle can be locked in the O (OFF) position only.
Padlocks can be used to lock the handle:
|
Locked Position |
Lock Type |
Lock Characteristics |
Lock Image |
|---|---|---|---|
|
O (OFF) |
Standard padlocking. |
Up to 3 padlocks (not supplied) Diameter 4–8 mm (3/16–5/16 in.) |
Overriding the 9422 Door Interlock
| DANGER |
|---|
|
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
Overriding the door interlock must only be done by qualified
electrical personnel.
Failure to follow these instructions will result in death or serious injury.
|
An interlock between the door and the circuit breaker position allows you to open the door only when the circuit breaker is open and the flange-mounted handle is in the O (OFF) position.
When the flange-mounted handle is in the I (ON) position, the door interlock prevents you from opening the door. To open the door, you must turn the handle to the O (OFF) position.
Under exceptional circumstances, qualified electrical personnel can override the interlock.
Follow the steps below to open the door with the circuit breaker in the I (ON) position:
|
Step |
Action |
|
|---|---|---|
|
1 |
With the handle in the I (ON) position, rotate the lock screw counter-clockwise. |
|
|
2 |
Hold the lock screw in that position while opening the door. NOTE: Follow the same procedure to close the door with the circuit
breaker in the I (ON) position.
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Follow the steps below to close the circuit breaker (turn to I (ON) position) while the door is open:
|
Step |
Action |
|
|---|---|---|
|
1 |
Hold down the interlock bar |
|
|
2 |
Turn the handle to the I (ON) position. |
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