Accessories
4.4 Plug-in and draw-out technology
3VA molded case circuit breakers with IEC certificate
Manual, 03/2019, A5E03603177010-03
273
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to the main circuits or is 100% safely isolated from them (so that it can be withdrawn).
With plug-in and draw-out circuit breakers, the cables or busbars are connected to the plug-
in socket or the draw-out socket. Here, the termination areas are implemented in the same
way as for the molded case circuit breaker. That is, all the connection technology available
for the 3VA molded case circuit breaker is also available in a similar way for the plug-in and
draw-out sockets.
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