Siemens SIRIUS System Manual

3RW3 semiconductor motor control unit
SIRIUS System Manual
8-26
GWA 4NEB 430 0999-02b
8.3.3.4 Combining the 3RT contactor with the 3RB10 electronic overload relay and 3RW3 soft
starter
The contactor, electronic overload relay, and soft starter can be connected in
two ways:
• Combining a 3RT1 contactor with an attached 3 RB10 electronic overload
relay, a connecting lead, and a 3RW30/31 soft starter
• Combining a 3RT1 contactor with a connecting lead and a combination of
a 3RW30/01 soft starter with an attached 3RB10 electronic overload relay
3RT + 3RB10 + connect-
ing lead + 3RW3
Figure 8-12: 3RT+3RB10+3RW3 combination
Minimum clearance
For thermal reasons, a minimum clearance is necessary between the con-
tactor/overload relay combination and the soft starter, as is a minimum
length of the connecting leads.
The following table specifies the minimum clearances and minimum lengths
of the connecting leads for the various frame sizes:
Table 8-11: 3RT + 3RB10 + 3RW3 installation guidelines, minimum clearances/minimum lengths
3RT
3RB10
Connecting
lead
3RW
Rail 1:
Combination of a 3RT1 contactor and
a 3RB10 electronic overload relay
Rail 2:
3RW30/31 soft starter
Frame size
Minimum clearance between
rail 1 and rail 2
(center to center) in mm
Minimum length of the
connecting lead
in mm
S00
160 100
S0
200 150
S2
240 200
S3
300 250

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