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3VT5 Molded Case Circuit Breakers up to 1600 A
Accessories and Components
Withdrawable version
6/14
Siemens LV 36 · 2008
6
Recommended wiring of circuit breaker, plug-in version
with motorized operating mechanism
Inserting and withdrawing circuit breaker with motorized
operating mechanism
• Each time before inserting or withdrawing the circuit breaker,
we recommend first to turn the AUTO/MANUAL switch on the
motor drive to the MANUAL position
• More information can be found in the operating
instructions
• Not adhering to this procedure or failing to follow the recom-
mended wiring could mean that the circuit breaker will not
successfully turn on at the first attempt
Changes in states of switches in cavities of switching unit when inserting and withdrawing circuit breaker
L+
Q3
X3
MP
NC NO
SSI
C
X3
5 7
6
3
2
4
9
6 2 1
1 10
5 7 3
3
4 1
M P
NSO0_00452
B
4.13
3VT9 500-2AF10
4.14
4.21
4.22
4.31
4.32
4.43
4.44
N-
Motor drive
ON
OFF
Switches
relative
acc.c. 4
Control circuit
Symbol
Description
MP
3VT9 500-3M..0 motorized operating mechanism
M
motor
P
storage device
X3
terminal strip to connect control circuits
X4
terminal strip for external operations counter
SSI
switch indicating AUTO (NO-C)/MANUAL (NC-C)
modes
B
recommended wiring of the control circuits (control cir-
cuits not included in motor driver delivery)
ON
make pushbutton
OFF
break pushbutton
Q3
Motorized operating mechanism circuit breaker for
AC 110 V LSN 4C/1
AC 230 V LSN 2C/1
DC 110 V LSN-DC 4C/1
DC 220 V LSN-DC 2C/1
State before insertion/withdrawal
State after insertion/withdrawal
Circuit breaker state before insertion
State of switches before insertion
→
-withdrawn position
State of switches after insertion
inserted position
Circuit breaker state before withdrawal
State of switches before withdrawal
→
inserted position
State of switches after withdrawal
withdrawn position
accessory compartment
accessory compartment
1,2
3,4
1,2
3,4
Lever position of
circuit breaker
State of the
main contacts
3VT9 500-2AF10
3VT9 500-2AF10
3VT9 500-2AF10
3VT9 500-2AF10
Switched on
1 1
0
0
1
1
0
1
0
Switched off manually or by motor drive
0 1
0
0
1
1
0
1
0
Switched off from the switched-on state: by
the release or TEST button
0 1
0
1
0
1
0
1
0
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1