Siemens SIRIUS System Manual

3RU11, 3RB10, and 3RB12 overload relays
SIRIUS System Manual
4-28
GWA 4NEB 430 0999-02b
Removing the device
from the rail
Contactor/overload relay combination
S00/S0:
Push the contactor downward, and swing it forward (without a tool)
S2/S3:
1
Remove the overload relay from the contactor.
2
Use a screwdriver to release the snap-on mounting on the contactor
(this is shown in Section 3.5 on the installation and removal of contac-
tors).
Screw-on mounting
Overload relay with holder for stand-alone installation
The overload relay is screwed on by means of 2 M4 screws in the openings
in the holder for stand-alone installation using the maximum tightening
torque of 1.5 to 2 Nm. The screws are secured with washers and spring lock
washers.
Contactor/overload relay combination
1
Mount the contactor on a flat surface with 2 M4 screws.
2
Mount the overload relay on the contactor.
Minimum clearance
Maintain a minimum clearance from grounded parts at the side of
>6.5mm.
Installation positions
3RU11
The drawings below show the permissible installation positions for the
3RU11 overload relays for mounting on contactors and stand-alone installa-
tion. If the installation position is in the shaded area, an adjustment of 10%
must be made.
Figure 4-22: Permissible installation positions for the 3RU11
3RB10/3RB12
Any installation position is possible for the 3RB10 and 3RB12.
Contactor + overload relay
Overload relay in stand-alone
installation
135°
0°
135°
I
e
x 1.1
NSB01364
45°
45°
90° 90°
0°
I
e
x 1.1
I
e
x 1.1
135°
0°
135°
I
e
x 1.1
NSB01363
22.5°
22.5°
0°

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