Description
1.9 Structure of the article number
SIRIUS 3RW50 soft starter
24
Manual, 09/2019, A5E35628455002A/RS-AA/001
1.9
Structure of the article number
Digit of the article number
1st-4th
5th
6th
7th
8th
9th
10th 11th 12th
SIRIUS 3RW soft starter
3RW5
0
B
Frame size (FS) and rated operational current I
e
of the soft starter
x*
1)
x**
1)
Connection system
Control circuit: Spring-type terminals
2
Control circuit: Screw terminals
6
Control terminals with
Analog output
A
Thermistor motor protection
T
Rated control supply voltage U
S
24 V AC / DC
0
110 V - 250 V AC
1
Rated operational voltage U
e
200 - 480 V AC
4
200 - 600 V AC
5
1)
Explanation in the following table.
The following table shows the size and rated operational current for Ue = 400 V and
TU = 40 °C and in a standard circuit:
Rated operational current I
e
of the
soft starter
Rated operational power P
e
of the
soft starter
x*
x**
S6
I
e
= 143 A
P
e
= 75 kW
5
5
I
e
= 171 A
P
e
= 90 kW
5
6
S12
I
e
= 210 A
P
e
= 110 kW
7
2
I
e
= 250 A
P
e
= 132 kW
7
3
I
e
= 315 A
P
e
= 160 kW
7
4
I
e
= 370 A
P
e
= 200 kW
7
5
I
e
= 470 A
P
e
= 250 kW
7
6
I
e
= 570 A
P
e
= 315 kW
7
7
Ambient temperature during operation
Note that the 3RW50 soft starters are approved for operation in a temperature range of
-25 °C to +60 °C.
Consider the derating of the rated operational current at ambient temperatures higher than
40 °C. You can find further information on derating in the Technical specifications (Page 193)
in the section "Power electronics" or in the Catalog IC 10
https://support.industry.siemens.com/cs/ww/en/view/109747945
