Locking the Circuit Breaker

Locking Options with a Side 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 that power is off before working on equipment. Failure to follow these instructions will result in death or serious injury.

The side rotary handle offers a locking option to prevent the rotary handle from being operated.

The handle can be locked in the O (OFF) position or, in the case of the black side 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 side 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.

NOTE: Locking the rotary handle in the I (ON) position does not disable the circuit breaker. If there is a fault detection, the circuit breaker still trips. When the rotary handle is unlocked, it moves to the Trip position.

Lock position	Lock type	Lock characteristics
O (OFF)	Standard padlocking	Up to 3 padlocks (not supplied) Diameter: 4–8 mm (3/16–5/16 in.)
I (ON) or O (OFF) (Black side operator only)	Padlocking after modification of the side operator during installation	Up to 3 padlocks (not supplied) Diameter: 4–8 mm (3/16–5/16 in.)
I (ON) or O (OFF) (Black side operator only)

Inserting Padlocks in the 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.

Step

Action

Comment

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.

Insert the padlocks in the space.