96 / 267
3VT2 Molded Case Circuit Breakers up to 250 A
Accessories and Components
Mounting accessories
Withdrawable design
3/40
Siemens LV 36 · 2008
3
With motorized operating mechanism
Recommended wiring
Description
Inserting and withdrawing the 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
motorized operating mechanism to the MANUAL position
• More operating 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 switch on at the first attempt.
L+
Q3
X3
MP
NC NO
S5
C
X3
X4
PE
YC
N–
9 7
8
3
6
4
2
1
2
5
1
M P
NSO0_00208
S
B
Operating
counter
Motor drive
Motor drive control circuits
ON
OFF
Symbol
Description
MP
3VT9 300-3M..0 motorized operating mechanism
M
motor
P
storage device
X3
terminal strip to connect control circuits
X4
terminal strip for external operations counter
S5
switch indicating AUTO (NO-C)/MANUAL (NC-C) modes
YC
3VT9 300-3MF10 external operations counter
B
recommended wiring of the control circuits (control cir-
cuits not included in motorized operating mechanism
delivery)
ON
make pushbutton
OFF
break pushbutton
S
switch to store up energy
Q3
motorized operating mechanism circuit breaker for
AC 24 V LSN 4C/1
AC 48 V LSN 4C/1
AC 110 V LSN 4C/1
AC 230 V LSN 2C/1
DC 24 V LSN-DC 4C/1
DC 48 V LSN-DC 4C/1
DC 110 V LSN-DC 4C/1
DC 230 V LSN-DC 2C/1