Locking a Circuit Breaker With Extended Rotary Handle

Locking Accessories

The extended rotary handle offers several locking functions to:

Prevent the rotary handle being operated.
Prevent the door being opened.

Some locking functions can be disabled on different adaptations.

The handle can be locked with up to three padlocks (not supplied) or keylock.

Accessory	Padlocks
	Padlocking (standard) in the O (OFF) position. Padlocking the rotary handle in the O (OFF) position does not prevent the door from opening.	Lock rotary 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). There is a choice of two options when locking the rotary handle in the I (ON) position: Standard with the door opening locked. As an option, door is not interlocked, and locking the rotary handle does not stop the door from opening.	Lock rotary 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 lock is mounted on the case inside the switchboard. Lock the circuit breaker in the O (OFF) position only or in the O (OFF) and I (ON) positions 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) in the O (OFF) position.

Padlocking the rotary handle in the O (OFF) position does not prevent the door from opening.

Lock rotary 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).

There is a choice of two options when locking the rotary handle in the I (ON) position:

Standard with the door opening locked.
As an option, door is not interlocked, and locking the rotary handle does not stop the door from opening.

Lock rotary 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 lock is mounted on the case inside the switchboard.

Lock the circuit breaker in the O (OFF) position only or in the O (OFF) and I (ON) positions 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 rotary handle moves to the Trip position. To return the circuit breaker to service, follow the resetting instructions.

Door Locking (MCC Function)

The extended rotary handle locks the door in the I (ON) position as standard.

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.

The rotary handle is delivered with the door lock activated. To deactivate the lock, consult the instruction sheets:

GHD16292AA, Extended rotary handle for ComPact NSX100-250
GHD16320AA, Extended rotary handle for ComPact NSX400-630

Example: An application includes a circuit breaker for a switchboard incoming supply and several receiver circuit breakers with extended rotary handles installed behind the same door. Locking the door with a single rotary handle (incoming supply circuit breaker) simplifies maintenance work on the switchboard.

Key-Operated Locking Procedure

Keylocking can be done with circuit breaker in either the O (OFF) position or the I (ON) position.

Step	Action (circuit breaker in the O (OFF) position)	Action (circuit breaker in the I (ON) position)
1	Open the door.	Open the door by disabling the door locking device if necessary.
2	Use the keylock mounted on the case inside the switchboard to lock the rotary handle.	Use the keylock mounted on the case inside the switchboard to lock the rotary handle.
3	Close the door.	Close the door, disabling the door locking device if necessary.

Sealing Accessories

The sealing accessories for circuit breakers with extended rotary handles are identical to those for circuit breakers with direct rotary handles.