Siemens 3VA1 100 A Manual page 203

Draw-out technology
Like the plug-in versions, draw-out versions of 3VA molded case circuit breakers are
equipped with plug-in contacts at the main current paths. In addition, side walls including
guide and support bolts are bolted to the sides of the 3VA molded case circuit breakers.
In this case, the mating contacts are in the draw-out socket. This is also equipped with a
guide mechanism via which the molded case circuit breaker is moved into the draw-out
socket by means of a crank handle in order to connect the breaker to the main circuits. The
operator can clearly read from a position indicator whether the breaker is properly connected
to the main circuits or is 100% safely isolated from them (so that it can be withdrawn).
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02
4.4 Plug-in and draw-out technology
Accessories
203