Locking the Pushbuttons

@experts: Topic shared between DOCA0284 and DOCA0285, with profiling; indicate if comments do not apply to both guides

Description

The pushbutton locking cover is an optional accessory for the MasterPacT MTZ2/MTZ3 circuit breaker that forbids access to the closing and opening pushbuttons:

Together or separately.
By using a padlock (shackle diameter 5–8 mm).
By using a lead seal.
By using screws.

IMPORTANT: The use of the pushbutton locking cover is mandatory to padlock the closing pushbutton when a MasterPacT MTZ2/MTZ3 circuit breaker is used as a transfer switch.

For more information, refer to Mechanical Interlocking for Transfer Switches.

VBP Pushbutton Locking Accessory

The pushbutton locking accessory is an optional transparent cover, mounted on the front cover of the circuit breaker, which covers the closing and opening pushbuttons.

For information on the accessory installation, consult the instruction sheet on the Schneider Electric website: NVE16147.

Locking the Pushbuttons

Step	Action
1	Close the transparent covers of the locking accessory. NOTE: One or both transparent covers of the locking accessory can be closed and locked.
2	Lock the transparent covers in place by using a padlock, lead seal, or screws.	Padlock Lead seal Screws