Siemens 3VA1 100 A Manual page 213

Position signaling in the plug-in socket
Several position signaling switches (number depends on socket size) can be fitted in the
plug-in socket. Auxiliary switches are capable of signaling "Plug-in unit - MCCB correctly
bolted to plug-in socket" via electrical connections.
For further information, please refer to chapter Position signaling switches (Page 225).
Padlocks for preventing insertion of a molded case circuit breaker
The socket unit can be locked by padlocks to prevent the insertion of a 3VA molded case
circuit breaker while maintenance or overhaul work is in progress. Using these locks to
prevent insertion and operation of a molded case circuit breaker helps to protect personnel
and the installation itself. The socket unit of the plug-in socket is equipped with three
openings for padlocks.
Openings for padlocks:
● Up to 3 padlocks
● Shackle diameter 8 mm (3/8")
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02
4.4 Plug-in and draw-out technology
Accessories
213