Siemens SIRIUS System Manual

3RT1/3RH1 contactors
SIRIUS System Manual
3-98
GWA 4NEB 430 0999-02b
Frame size S3
Figure 3-78: Replacing the contact piece (frame size S3)
Contact pieces
The following contact pieces can be used for frame sizes S2 and S3 for the
different performance classes:
Figure 3-79: Contact pieces (frame sizes S2/S3)
Loosen the 2 screws on the
frontplate of the contactor, and
remove the top section of the
contactor
(1, 2)
.
Remove the movable contact
piece by gently tipping it
upward and then pulling it out
(3, 4)
. Loosen the screws that
attach the two immovable con-
tact pieces
(5)
.
Remove the old contact pieces
(6)
, and screw on the new con-
tact pieces
(7)
. Push in a new
movable contact piece
(8)
.
Replace the top section of the
contactor, and tighten the 2
screws on the frontplate.
2
1
1
4
5
3
8
6
7
9
10
10
3RT1034
15 kW
3RT1035
18.5 kW
3RT1036
22 kW
34 35 36
3RT1044
30 kW
3RT1045
37 kW
3RT1046
45 kW
3RT1446
140 A (AC-1)
S2
S3

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