Siemens SIRIUS System Manual

3RU11, 3RB10, and 3RB12 overload relays
SIRIUS System Manual
4-30
GWA 4NEB 430 0999-02b
Screw-type terminal
The screws are captive, and the screwdriver guides allow the use of power
screwdrivers.
Cage Clamp terminal
The following illustration shows a Cage Clamp terminal with the 3RU11,
using the example of frame size S2:
Figure 4-24: 3RU11: Cage Clamp terminal (frame size S2)
Conductors with a cross-section of 0.5 mm
2
(with insulation stop) to
2.5 mm
2
can be used.
1.
Insert the screwdriver into the opening until the stop.
Note
The 8WA280 screwdriver is recommended for opening the Cage Clamp ter-
minal.
The screwdriver head automatically keeps the clamp open.
Caution
When clamping and unclamping, the screwdriver must be inserted in the
rectangular opening until the stop. You must not make any levering or tur-
ning movements, because these might break the cage clamp.
2.
Insert the conductor in the oval terminal opening.
3.
Remove the screwdriver.
The terminal clamp closes, and the conductor is thus securely clamped.
Connection cross-sec-
tions
You can obtain the permissible connection cross-sections for the main and
auxiliary connections of the overload relays from Section 4.7, "Technical
specifications".

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