Locking the Circuit Breaker

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH When the circuit breaker toggle 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.

Lock the mechanism with up to three padlocks (not supplied) or a keylock.

Both locking methods can be used at the same time.

Step	Action	Comment	Result
1		Switch the circuit breaker to the O (OFF) position.	–
2	Pull out the tab	–
3		Lock the tab using: Up to three padlocks 5-8 mm (0.2-0.3 in) in diameter. A keylock (optional).	The circuit breaker is locked. No commands in Auto mode or Manu mode are executed.

Step

Action

Comment

Result

Switch the circuit breaker to the O (OFF) position.

–

Pull out the tab

–

Lock the tab using:

The circuit breaker is locked.

No commands in Auto mode or Manu mode are executed.

Use sealing accessories to prevent circuit breaker operations.

Seal		Prohibited operations
	Motor mechanism mounting screw	Dismantling the escutcheon Accessing the auxiliaries Dismantling the trip unit
	Transparent cover for the motor mechanism	Accessing the manual/automatic selector (depending on its position, manual operation⁽¹⁾, or automatic operation is disabled).
	Transparent protective cover for the trip units	Altering any settings and accessing the test port.
	Mounting screw for terminal shields	Accessing the power connection (protection against direct contact)
(1) In this case no local operations are possible.