Siemens SIRIUS System Manual

3RA1 fuseless load feeders
SIRIUS System Manual
5-14
GWA 4NEB 430 0999-02b
5 3RA1 fuseless load feeders
Fuseless feeders for busbar mounting
There are kits available for reversing operation for frame sizes S00 to S2.
The fuseless load feeders of frame size S3 are not suitable for busbar
mounting.
Direct starters of frame
sizes S00 to S2
The following illustrations show how to assemble the fuseless load feeder:
• Busbar adapter
• Direct starters
• Frame sizes S00 to S2
Figure 5-8: Self-assembly, busbars, direct starters (frame sizes S00 and S2)
3RA1921-1.
S2
S0
S00
4
1
4
2
3
5
3RA1931-1.
8US1
1
2
4
3
3
5
3RA1911-1A
8US1
110
1
2
4
3
5
3
8US1
125

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