148 / 267
3VT3 Molded Case Circuit Breakers up to 630 A
Accessories and Components
Auxiliary releases
4/28
Siemens LV 36 · 2008
4
Undervoltage releases
Circuit breaker switched off by the undervoltage release
Circuit breaker states and lever positions of the circuit breaker
Number and type of contacts by arrangement of contacts
■
Technical specifications
Shunt releases
Undervoltage releases
1)
Tripping of the undervoltage release can be delayed using the delay unit
3VT9 000-1UX00.
2)
Cannot be used in combination with motorized operating mechanism
3VT9 300-3M..0.
20
30
30
30
20
30
0
1
0
1
0
1
0
1
0
1
0
1
0
1
t
[ms]
20
NSO0_00365
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
Circuit breaker state
lever positions of circuit breakers
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 operating mechanism
Arrangement of contacts Number of contacts Contact types
2
2
break
11
1 + 1
breake + make
20
2
make
A1
U
<
A2
10.Y2
N-
L+
NSO0_00519
10.Y1
A1
U
<
A2
N-
L+
3VT9 300-1U.00
3VT9 300-1U.10
Order No.
3VT9 300-1S.00
Rated operating voltage U
e
AC 24, 40, 48, 110, 230, 400, 500 V
DC 24, 40, 48, 110, 220 V
Rated frequency f
n
Hz 50/60
Input power at 1.1 U
e
AC
DC
< 3 VA
< 3 W
Functional description
U
≥
0,7 U
e
the circuit breaker must trip
Time to switch-off
ms 20
Loading time
∞
Connector cross-section S mm
2
0.5 ... 1
Terminal protection
(connected release)
IP20
Location in accessory com-
partment No.
10
Order No.
3VT9 300-1U.00 3VT9 300-1U.10
2)
Rated operating voltage U
e
AC 24, 40, 48, 110, 230, 400, 500 V
DC 24, 40, 48, 110, 220 V
Rated frequency f
n
Hz 50/60
Input power at 1.1 U
e
AC
DC
< 3 VA
< 3 W
< 3 VA
< 3 W
Functional description
U 0.85 U
e
(circuit breaker is possible switch on)
U 0.35 U
e
(the circuit breaker must trip)
Time to switched-off
ms 20
Loading time
∞
Connector cross-section S mm
2
0.5 ... 1
2)
Terminal protection
(connected trip)
IP20
Location in accessory
compartment No.
10
Earl switch
--
Rated operating voltage U
e
V --
AC 250
Rated frequency f
n
Hz --
50/60
Rated operating current
I
e
/U
e
V --
AC 1 A/AC 250
Arrangement of contacts
--
02, 11, 20
Connector cross-section S mm
2
--
0.5 ... 1
2)
Terminal protection
(connected release)
--
IP20