Locking a Circuit Breaker With Direct Rotary Handle

Locking Accessories

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

Accessory	Padlocks
	Padlocking (standard) only in the O (OFF) position.	Lock handle with up to three padlocks (not supplied) with shackle diameters of 5–8 mm (0.2–0.3 in).
	Padlocking (after modification to the rotary handle during installation) in the two positions I (ON) and O (OFF).	Lock handle with up to three padlocks (not supplied) with shackle diameters of 5–8 mm (0.2–0.3 in).
	Keylocking with a Profalux® or Ronis® lock (optional). The circuit breaker can be locked in the O (OFF) position only or in the O (OFF) and I (ON) position, depending on the bolt chosen.	A Profalux or Ronis lock can be installed on site. Keylocking can be used at the same time as padlocking.

Accessory

Padlocks

Padlocking (standard) only in the O (OFF) position.

Lock handle with up to three padlocks (not supplied) with shackle diameters of 5–8 mm (0.2–0.3 in).

Padlocking (after modification to the rotary handle during installation) in the two positions I (ON) and O (OFF).

Lock handle with up to three padlocks (not supplied) with shackle diameters of 5–8 mm (0.2–0.3 in).

Keylocking with a Profalux® or Ronis® lock (optional).

The circuit breaker can be locked in the O (OFF) position only or in the O (OFF) and I (ON) position, depending on the bolt chosen.

A Profalux or Ronis lock can be installed on site.

Keylocking can be used at the same time as padlocking.

NOTE: Locking the rotary handle in the I (ON) position does not disable the circuit breaker protection functions. If there is an electrical fault, the circuit breaker still trips. When unlocked, the handle moves to the Trip position. To return the circuit breaker to service, follow the resetting instructions.

Door Locking (MCC Function)

Further options are offered with the direct rotary handle in the MCC function.

When the circuit breaker is in the I (ON) position, the direct rotary handle locks the door in the closed position.

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Only qualified persons are authorized to disable the door lock. Failure to follow these instructions will result in death or serious injury.

Temporarily disable this lock to open the door when the circuit breaker is in the I (ON) position.

Disabling this lock requires modifying the rotary handle. Consult the instruction sheet GHD16295AA MCC conversion accessory for ComPact NSX100-630.

If the lock has been disabled, the following direct rotary handle functions are inoperative:

Door locking
Preventing the circuit breaker from being closed when the door is open

Preventing Circuit Breaker Closing When the Door Is Open

The door locking device can also help to prevent the direct rotary handle from being moved to the I (ON) position when the door is open.

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)