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3VT3 Molded Case Circuit Breakers up to 630 A
Accessories and Components
Auxiliary switches
4/25
Siemens LV 36 · 2008
4
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Overview
Type designation according to contact arrangement
Functions and names of switches according to their location in
accessory compartments
state of switches in the switching unit cavities
1)
Accessory compartment 4, 5, 6 are only for 4-pole design.
Arrangement
of contacts
Order No.
Number of contacts Contact types
01
3VT9 300-2AC10 (20) 1
make
20
3VT9 300-2AG10 (20) 2
make
01
3VT9 300-2AD10 (20) 1
break
02
3VT9 300-2AE10 (20) 2
break
11
3VT9 300-2AF10 (20) 1 + 1
break + make
001
3VT9 300-2AH10 (20) 1
change-over
Accessory
compartment
Switch name Switch function
1
Signalling Signal to indicate the state of the circuit
breaker by the overcurrent release
2
Relative
Relative to indicate tripping of the circuit
breaker by releases, TEST push button or
by OFF push button on the motorized
operating mechanism
3,4,5,(6 ... 9)
1)
Auxiliary
Auxiliary to indicate the position of the
main contacts
10
Leading
Leading to make/break in advance of the
main contacts