Siemens SIRIUS System Manual

3RW3 semiconductor motor control unit
SIRIUS System Manual
GWA 4NEB 430 0999-02b
8-5
8.2 Device description
The SIRIUS 3RW3 soft starters are part of the SIRIUS modular system. They
are compatible with the other SIRIUS switching devices.
The possible combinations are:
• 3RW3 soft starter + 3RV circuit breaker
• 3RW3 soft starter + 3RU/3RB overload relay + 3RT contactor
The link modules used for combinations of contactors and circuit breakers
are used for this (see Section 8.3.2, "Installation guidelines").
Figure 8-1: 3RW3 soft starter
3RW30/31 frame sizes
The 3RW30 soft starter is available in four frame sizes: S00, S0, S2, and S3.
The 3RW31 soft starter is available in frame size S0.
The following table contains the power ranges of the various frame sizes (all
specifications apply to U
N
= 400 V and 40° C ambient temperature):
Table 8-2: 3RW3, frame sizes
Frame size S00 Frame size S0 Frame size S2 Frame size S3
1.1 - 4 kW 5.5 - 11 kW 15 - 22 kW 30 - 55 kW
6 - 9 A 12.5 - 25 A 32 - 45 A 63 - 100 A
(W x H x D) (mm)
45 x 97.5 x 93
(W x H x D) (mm)
45x125x119
(W x H x D) (mm)
55 x 160 x 143
(W x H x D) (mm)
70x170x178

Siemens SIRIUS Specifications

General

Product brand name	Siemens
Series	SIRIUS
Coil Voltage	24V DC, 110V AC, 230V AC
Switching Capacity	Up to 10A
Mounting Type	DIN rail
Product designation	SIRIUS
Contact Material	Silver alloy
Contact Rating	Varies depending on the specific SIRIUS relay model (e.g., 6 A at 250 V AC, 10 A at 250 V AC)
Switching Voltage	Varies depending on the specific SIRIUS relay model (e.g., 250 V AC, 400 V AC)
Mechanical Life	Up to 10 million operations
Electrical Life	Up to 100, 000 operations
Operating Temperature	-25°C to +55°C
Protection Class	IP20
Size of relay base	Varies depending on the specific SIRIUS relay model