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3VT3 Molded Case Circuit Breakers up to 630 A
Accessories and Components
Motorized operating mechanisms
4/33
Siemens LV 36 · 2008
4
■
Function
Circuit breaker switched on/off by the motorized operating mechanism
Circuit breaker switched on by the motorized operating
mechanism – electrically by pushbutton ON
Circuit breaker switched off by the motorized operating
mechanism- electrically by pushbutton OFF
Circuit breaker states and toggle positions of the circuit breaker
Wiring diagram
Circuit breaker switched on and switched off by motorized oper-
ating mechanism, electrically by ON pushbutton and pushbut-
ton
Wiring diagram description
50
50
50
20
0
1
0
1
0
1
0
1
0
1
0
1
0
1
t
[ms]
20
NSO0_00368
2
4
6
1
3
5
5.4
4.4
3.4
5.3
4.3
3.3
5.2
4.2
3.2
5.1
4.1
3.1
2.4 2.3
2.2 2.1
10.Y2
10.Y4
10.Y1
10.Y3
10.Y2
10.Y4
10.Y1
10.Y3
Main contacts
Auxiliary switch
Auxiliary switch
Relative switch
Relative switch
Early switch
Early switch
accessory
compartment
2
accessory
compartment
3 … 5
accessory
compartment
10
900
900
900
900
0
1
0
1
0
1
0
1
0
1
0
1
0
1
t
[ms]
900
NSO0_00369
2
4
6
1
3
5
5.4
4.4
3.4
5.3
4.3
3.3
5.2
4.2
3.2
5.1
4.1
3.1
2.4 2.3
2.2 2.1
10.Y2
10.Y4
10.Y1
10.Y3
10.Y2
10.Y4
10.Y1
10.Y3
Main contacts
Auxiliary switch
Auxiliary switch
Relative switch
Relative switch
Early switch
Early switch
accessory
compartment
2
accessory
compartment
3 … 5
accessory
compartment
10
X4
YC
3
6
4
2
1
2
5
1
X3
MP
NC NO
S6
C
X3
12 10
11
M P
NSO0_00370
B
PE N-
NC
NO
S5
C
9 7
8
L+
Q3
S
Operations
counter
Motor drive control circuits
Motor drive
ON
OFF
Circuit breaker state
Toggle positions of circuit breaker
Switched on
Switched off by releases, or by TEST
button or by the trip push button on the
motorized operating mechanism
Switched off manually or electrically by
the operating mechanism
Symbol
Description
MP
motorized operating mechanism 3VT9 300-3M..0
M
motor
P
storage device
X3
connector to connect control circuits
X4
connector for external operations counter
S5
switch indicating AUTO/MANUAL modes
S6
Switching indicating energy storage
(ready to on: NO-C)
YC
external operations counter 3VT9 300-3MF10
B
recommended wiring of the control circuits
(not included in drive order)
ON
make push button
OFF
break push button
S
switch for energy storage
(switched on = automatic storage, may be
continuously switched on)
Q3
motorized operating mechanism circuit breaker, see
page 4/64