Siemens SIRIUS System Manual

3RT1/3RH1 contactors
SIRIUS System Manual
3-96
GWA 4NEB 430 0999-02b
S3 - DC operation
Figure 3-76: Replacing the magnet coil (frame size S3/DC)
Loosen the 2 screws
between the rear and front
contactor halves. Loosen
the two screws on the
plates that attach the mag-
net coil on the armature,
and remove the magnet coil
from the rear half of the
contactor.
Insert the new magnet coil,
and screw on the two plates
again with the two screws.
Replace the front half of the
contactor, and tighten the 2
screws again.
Make sure the springs are in
their correct position.
2
1
1
4
5
3
6
8
8
7

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