Siemens 3VA1 100 A Manual page 226

Accessories
4.4 Plug-in and draw-out technology
Signal "Position of molded case circuit breaker in the draw-out unit"
Up to three position signaling switches can be integrated in the draw-out unit in order to
transmit breaker position information to monitoring and control systems. They are installed in
the right-hand side wall of the unit at the positions indicated in the diagram below:
①
②
③
Signal "Position of molded case circuit breaker in the draw-out unit"
It is irrelevant whether the position signaling switch is inserted in slot a or b. The other slots
can be used for the signaling switches supplied with the communications interface kit or for
an additional position signaling switch.
If the molded case circuit breaker in the draw-out unit is moved into a defined position with
the crank handle, the appropriate position signaling switch outputs a signal which can be
used in other electrical circuits such as visual or acoustic alarm displays
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41a or 41b: Detects position CONNECT
42a or 42b: Detects position TEST
43a or 43b: Detects position DISCON
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02