Locking the Circuit Breaker

Locking Accessories

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.

Use locking accessories to lock the toggle handle in the I (ON) or O (OFF) position.

Accessory		Padlocks
	Accessory that is part of the case	Use up to 3 padlocks (not supplied) 5–8 mm (0.2–0.3 in) in diameter
	Accessory that is detachable	Use up to 3 padlocks (not supplied) 5–8 mm (0.2–0.3 in) in diameter

NOTE: Locking the toggle handle in the I (ON) position does not disable the circuit breaker protection functions. If there is an electrical fault, the circuit breaker trips without altering its performance. When unlocked, the toggle handle moves to the Trip position. To return the circuit breaker to service, refer to how to open, close, and reset the circuit breaker.

Sealing Accessories

Use sealing accessories to prevent circuit breaker operations.

Seal		Prohibited operations
	Escutcheon mounting screw	Dismantling the escutcheon Accessing the auxiliaries Dismantling the trip unit
	Transparent protective cover	Altering trip unit settings Accessing the test port for the trip units
	Mounting screw for terminal shields	Accessing the power connection (protection against direct contact)