The control switches can be bus-mounted with each other or with 5TE4 8 pushbuttons, 5TE5 8 light indicators or 5TT4 1 remote control switches and 5TT4 2 switching relays.
For busbars see Switching devices Busbar systems.
The handle locking device prevents undesired manual on and off switching.
The handle locking device is a universal accessory for all switches and miniature circuit breakers.