Siemens Sentron 3VA Manual page 247

Signal "Position of molded case circuit breaker in the draw-out unit"
So that the position of the molded case circuit breaker within the draw-out socket can be
passed on electrically to the monitoring and control systems, up to six position signaling
switches can be inserted in the right side wall of the draw-out unit at the following positions:
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. Only one
position signaling switch per position is usually installed. The remaining free slots can be
used for the signaling switches of the communication link kit Alternatively, another position
signaling switch can also be inserted, however.
If the molded case circuit breaker in the draw-out unit is moved into a defined position with
the crank handle, the corresponding position signaling switch outputs a signal that can be
further used electrically, such as for visual or acoustic alarm indications.
If the molded case circuit breaker is not in any of the defined positions, the breaker status
indicator displays the word UNBLOCK on a white background. In this position, the molded
case circuit breaker is either off (position OFF, contacts open) or tripped (position TRIP,
contacts open). The breaker main contacts cannot be closed with the breaker in the
UNBLOCK state.
3VA molded case circuit breakers with UL and IEC certification
Manual, 01/2019, L1V30435333-01
Slot No. 41a or 41b: Detects position CONNECT
Slot No. 42a or 42b: Detects position TEST
Slot No. 43a or 43b: Detects position DISCON
4.4 Plug-in and draw-out technology
Accessories
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