Siemens 3VA1 100 A Manual page 212

Accessories
4.4 Plug-in and draw-out technology
Auxiliary circuit connectors
Molded case circuit breakers or switch disconnectors in molded case circuit breaker design
are frequently equipped with internal accessories, e.g. with an auxiliary switch, auxiliary
release, etc. A broad range of internal accessory components is also available for the 3VA
molded case circuit breaker. For further information, please refer to chapter Internal
accessories (Page 146).
To ensure that the electrical connections required by plug-in units can be quickly and safely
disconnected, auxiliary circuit connectors can be installed.
The breaker-end half is attached to the underside of the molded case circuit breaker and
electrically connected to the internal accessories. Appropriate openings and cable ducts are
provided in the molded case circuit breaker for routing stranded wires. The plug-in socket
half of the auxiliary circuit connector is inserted in the socket and electrically connected to
the customer's installation.
When the molded case circuit breaker is inserted into the plug-in socket, the internal
accessories in the breaker are quickly connected to the customer's installation without the
use of tools.
Note
Plug-in and draw-out units use different versions of the auxiliary circuit connector. The draw-
out version has a longer, movable telescopic rail because the distance to be bridged in the
draw-out socket is longer.
Further details about auxiliary circuit connectors can be found in chapter Auxiliary circuit
connector (Page 231).
212
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02