Siemens SENTRON 3VL - Auxiliary Switches and Alarm Switches

Functions
5.2 Voltage protection
3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01
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5.2.3 Auxiliary switches and alarm switches
Auxiliary and alarm switches are used to indicate the switching status of the circuit breaker.
Auxiliary switches show the position of the main contacts ("ON" or "OFF").
Alarm switches transmit a signal when the circuit breaker trips due to a short-circuit or
overcurrent, or when the shunt release, undervoltage release, test button, or RCD module
trips.
Group 1 Group 2
VL160X VL160 VL250 VL400 VL630 VL800 VL1250 VL1600
Possible configuration of the insulated accessory compartments
Auxiliary and alarm switches, shunt and undervoltage releases are used and wired in the
available cutouts behind the front cover of every circuit breaker.
Leading auxiliary switches for switching on and off
The leading auxiliary switches (changeover switches) are available as accessories for front
rotary operating mechanisms and door-coupling rotary operating mechanisms.
The following applications are possible:
Leading auxililary switch for switching from "ON" to
"OFF"
Leading auxililary switch for switching from "OFF"
to "ON"
Each version, leading auxiliary switch for switching
on and off, can be equipped with one or two
changeover switches. The connecting cables of the
auxiliary switches are 1.5 m long.