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3VT1 Molded Case Circuit Breakers up to 160 A
Accessories and Components
Auxiliary switches
2/22
Siemens LV 36 · 2008
2
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Overview
Auxiliary switches
Auxiliary and alarm switches
Function, name and location of switches
according to type designation
1)
In the accessory compartment 1, a 3VT9 100-2AB10 auxiliary switch and
3VT9 100-2AH10 signal switch cannot be used simultaneously.
2)
When one of accessory compartments 4, 5 or 6 is already in use for auxil-
iary switches, a shunt release or undervoltage release cannot be fitted
additionally.
Location of switches in accessory compartments
Location of accessory compartments in a 3-pole 3VT1
circuit breaker/switch disconnector.
Location of accessory compartments in a 4-pole 3VT1
circuit breaker/switch disconnector.
When using one of the accessory compartments 4, 5 or 6,
neither a shunt release nor an undervoltage release cannot be
fitted.
Order No.
Type
Switch location
Switch function
3VT9 100-2AB10
3VT9 100-2AB20
Auxiliary
switch
Accessory
compartment
1
1)
, 2, 3, 4, 5, 6
2)
Signaling of the
state of the main
contact of the circuit
breaker/ switch dis-
connector
3VT9 100-2AH10
3VT9 100-2AH20
Alarm
switch
Accessory
compartment 1
1)
Signal in the event of
tripping of the cir-
cuit breaker by the
overcurrent release