Locking a Circuit Breaker with a Direct Rotary Handle
Locking Options for the Direct Rotary Handle
 DANGER |
|---|
|
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 direct rotary handle offers the following locking options:
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Prevent the door from being opened if the door interlock was activated at installation time
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Prevent the rotary handle from being operated
The handle can be locked in the O (OFF) or I (ON) position.
No setup is required to lock the handle in the O (OFF) position.
Before the handle can be locked in the I (ON) position, the rotary handle block must be dismounted and the physical setup of the handle must be changed. This is usually done at installation. For information about how to set up the handle to be locked in the I (ON) position, see the relevant instruction sheet (see Related Documents).
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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.) |
|
|
I (ON) or O (OFF) |
Padlocking after modification of the rotary handle during installation |
Up to 3 padlocks (not supplied) Diameter: 4–8 mm (3/16–5/16 in.) |
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Inserting Padlocks in the PowerPact B Rotary Handle
|
Step |
Action |
Comment |
|---|---|---|
|
1 |
With the handle in the O (OFF) or I (ON) position, turn the knob as illustrated until the slot in the handle opens. |
|
|
2 |
Insert the padlocks in the slot. |
Overriding the Rotary Handle 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.
|
If it was activated at the time of installation, the interlock between the door and the circuit breaker allows the door to be opened only when the circuit breaker is open and the rotary handle is in the O (OFF) position.
When the rotary handle is in the I (ON) position or the Trip position, the door interlock prevents the door from opening. To open the door, the handle must be turned to the O (OFF) position.
Under exceptional circumstances, qualified electrical personnel can follow these steps to open the door while the rotary handle is in the I (ON) position or the Trip position:
|
Step |
Action |
|
|---|---|---|
|
1 |
Using a screwdriver, turn the locking screw clockwise by 10-15 degrees and then hold the screwdriver in place. |
|
|
2 |
Still holding the screwdriver in place, open the door and then release the locking screw. |
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To close the door, use a screwdriver to turn the locking screw clockwise by 10-15 degrees. Holding the screwdriver in place, close the door and then release the locking screw.