Locking a Circuit Breaker with a Front Extended Rotary Handle
Locking Options for the Front Extended 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 extended rotary handle offers the following locking options:
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Prevent the door from being opened
-
Prevent the rotary handle from being operated
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Prevent the circuit breaker itself from being operated
The handle can be locked in the O (OFF) position or, in the case of the black door operator, in the 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 door operator 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).
|
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 door operator 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 Extended Rotary Handle
|
Step |
Action |
Comment |
|---|---|---|
|
1 |
With the handle in the O (OFF) or I (ON) position, pull the cover on the front of the handle until you hear a click. A space opens between the handle and the cover. |
|
|
2 |
Insert the padlocks in the space. |
Locking the Circuit Breaker with an Extended Rotary Handle in the O (OFF) Position When the Door is Open
The following procedure explains how to lock the circuit breaker itself, instead of the handle.
|
Step |
Action |
Comment |
|---|---|---|
|
1 |
With the circuit breaker in the O (OFF) position, turn the locking plate counter-clockwise by 60 degrees to align the holes for the lock. |
|
|
2 |
Put a padlock or safety lockout hasp (4–8 mm, 3/16–5/16 in.) in the hole to lock the circuit breaker in the O (OFF) position. |
Overriding the Extended 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.
|
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 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 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 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 60 degrees and hold the screwdriver in place. |
|
|
2 |
Open the door. |
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To close the door, use a screwdriver to turn the locking screw clockwise by 60 degrees. Holding the screwdriver in place, close the door and then release the locking screw.