SIEMENS
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Siemens IC 10 · 2017
SIRIUS 3RW Soft Starters
3RW30, 3RW40 for Standard Applications
3RW40
General data
6
■
Application
The SIRIUS 3RW40 solid-state soft starters are used for the soft
starting and stopping of three-phase asynchronous motors.
Due to two-phase control, the current is kept at minimum values
in all three phases throughout the entire starting time and
disturbing direct current components are eliminated in addition.
This not only enables the two-phase starting of motors
up to 250 kW (at 400 V) but also avoids the current and torque
peaks which occur e.g. with wye-delta starters.
Application areas
See "Selection aid for soft starters", on page 6/6.
■
Technical specifications
1)
In the case of deviations, please observe derating,
see manual in the
chapter "Configuring".
More information
Manual,
see
FAQs,
Catalog LV 10,
see www.siemens.com/industry/infocenter
Type
3RW402.
3RW403.
3RW404.
3RW405.
3RW407.
Mechanics and environment
Mounting dimensions (W x H x D)
• Screw terminals
mm
45 x 125 x 154
55 x 144 x 170
70 x 160 x 188
120 x 198 x 250
160 x 230 x 278
• Spring-type terminals
mm
45 x 150 x 154
55 x 144 x 170
70 x 160 x 188
120 x 198 x 250
160 x 230 x 278
Permissible ambient temperature
During operation
°C
-25 ... +60; (derating from +40)
During storage
°C
-40 ... +80
Weight
kg
0.77
1.35
1.9
4.9 (3RW4055)
6.9 (3RW4056)
8.9
Permissible mounting position
1)
• With auxiliary fan
(for 3RW402. ... 3RW404.)
• Without auxiliary fan
(for 3RW402. ... 3RW404.)
--
(fan integrated in the
soft starter)
Installation type
1)
Stand-alone installation
3RW402.
3RW405., 3RW407.
3RW403., 3RW404.
Permissible installation altitude
m
5 000
(Derating from 1 000,
see "Characteristic Curves", page 6/8
); higher on request
Degree of protection
IP20 for 3RW402.; all others IP00
W
H
D
NSB0_00649a
22,5° 22,5°
90°
90°
10°
10°
10°
10°
NSB0_01897
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9
© Siemens AG 2016