Siemens SENTRON 3VA27 - Technical Overview

Description
2.7 Basic unit
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
36 Manual, 10/2018, L1V30499596002-01
2.7.4
Technical overview
3WL10 circuit breakers
Number of poles
3, 4
Rated operational current
I
n
40 °C
A
630, 800, 1000, 1250
Rated operational voltage
U
e
AC (50/60 Hz)
V
Up to 690
Rated insulation voltage
U
i
AC (50/60 Hz)
V
1000
Rated impulse withstand volta-
ge
U
imp
kV 12
Current-carrying capacity of the
neutral pole for 4-pole
circuit breakers
% I
n
100
Breaking capacity
B
N
S
Rated ultimate short-circuit
breaking capacity AC
I
cu
415 / 440 V AC
kA
42
55
66
I
cu
500 / 525 V AC
kA
42
50
50
I
cu
690 V AC
kA
—
42
50
Rated service short-circuit
breaking capacity AC
I
cs
415 / 440 V AC
kA
42
50
50
I
cs
500 / 525 V AC
kA
42
50
50
I
cs
690 V AC
kA
—
42
50
Rated short-circuit making
capacity AC
I
cm
415 / 440 V AC
kA
88
121
145
I
cm
500 / 525 V AC
kA
88
105
105
I
cm
690 V AC
kA
—
88
105
Rated short-time withstand
current
I
cw
1 s
kA
42
42
50
I
cw
3 s
kA
24
24
36
Break time on opening
I < I
cw
ms
40
I > I
cw
ms 25
Rated conditional short-circuit
current of the
non-automatic air circuit brea-
kers
I
cc
500 / 690 V AC kA — 42 50
Utilization category
IEC 60947-2
B
Disconnector feature
✓
Reference standard
IEC 60947-2
Trip unit (ETU) 3-series
LI
✓
LSI
✓
LSIG
✓
6-series
LSI
✓
LSIG
✓
The use and installation of accessories does not adversely affect the life of the device.