Siemens SIRIUS System Manual

3RH, 3TX, LZX coupling links
SIRIUS System Manual
GWA 4NEB 430 0999-02b
6-15
Conductor cross-sec-
tions
The following table shows the permissible conductor cross-sections for the
coupling links. The specifications apply to main and auxiliary connections.
Table 6-5: Conductor cross-sections for the 3RH, 3TX, and LZX coupling links
3TX7004
3TX7002
screw-type termi-
nals
3TX7005
3TX7003
Cage Clamp
terminals
LZX:
RT/ZT/MT
3RH1924
3TX7090
Screw-type termi-
nals
∅
5 to 6 mm / PZ2
M3 ------ ------ M3
1 x 0.25 to 4 mm² 1 x 0.08 to 2.5 mm² 2 x 2.5 mm² 2 x (0.5 to 2.5) mm²
1 x 0.5 to 2.5 mm² 1 x 0.25 to 2.5 mm² 2 x 1.5 mm² 2 x (0.5 to 1.5) mm²

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