Siemens SENTRON ATC6300, Manual, Page: 87 / 210

Connection
7.3 Connection of Siemens SENTRON switching devices
3KC ATC6300 transfer control device
Manual, 03/2018, L1V30535632002A-01
85
Key features of the 3WL, frame size 1-3:
FS I FS II FS III
Unit 3WL11 3WL12 3WL13
Compatible with standard for
transfer switching equipment IEC60947-6-1 IEC60947-6-1 IEC60947-6-1
Device class CB CB CB
Rated operational voltage U
e
AC 50
/ 60 Hz
[V AC] 480
1
480
1
480
1
Rated operational current I
n
at 50 °C
ambient temperature
[A] 1000 ... 2000 800 ... 1600 4000 ... 6300
Utilization category according to IEC
60947-6-1
AC-32B AC-32B AC-32B
Rated operational frequency [Hz] 50 / 60 50 / 60 50 / 60
Short-time withstand current I
cw
at 1s [kA] 42, 50, 66
2
55; 66; 85; 100
2
100
2
Impulse withstand voltage (U
imp
) of
the main circuit
[kV] 12 12 12
Impulse withstand voltage (U
imp
) of
the control circuit
[kV] 2.5
3
2.5
3
2.5
3
1
Reduction due to maximum nominal voltage U
n
of the ATC6300 controller of 480 V AC
2
Dependent on the breaking capacity of the 3WL, see manual or catalog for further information.
3
For the motor operator, the U
imp
is 1.2 kV
Key features of the 3WT:
FS I FS II
Unit 3WT8 3WT8
Compatible with standard for trans-
fer switching equipment
IEC60947-6-1 IEC60947-6-1
Device class CB CB
Rated operational voltage U
e
AC 50
/ 60 Hz
[V AC] 480
1
480
1
Rated operational current I
n
at 50 °C
ambient temperature
[A] 400 ... 1600 630 ... 4000
Utilization category according to IEC
60947-6-1
AC-32B AC-32B
Rated operational frequency [Hz] 50 / 60 50 / 60
Short-time withstand current I
cw
at
1s
[kA] 35
2
/ 50 66
Impulse withstand voltage (U
imp
) of
the main circuit
[kV] 12 12
1
Reduction due to maximum nominal voltage U
n
of the ATC6300 controller of 480 V AC
2
Applies to Ecoline. For further information, see the manual of the 3WT air circuit breaker.