Siemens SIRIUS System Manual

3RT1/3RH1 contactors
SIRIUS System Manual
3-32
GWA 4NEB 430 0999-02b
3 3RT1/3RH1 contactors
3.3.8 Contactor combinations for reversing
Contactor combinations are available for reversing (3RA1) in frame sizes S00
to S3:
• Installed in the factory
Frame sizes S2 and S3 are delivered already mounted on a base plate.
• As a kit for self-assembly
The same accessories can be used as for the basic units of the correspond-
ing frame size (see Section 3.4).
For motor protection an overload relay must be attached.
4-pole contactor combinations for reversing can be put together in frame
sizes S0 and S2.
Figure 3-14: Fully assembled contactor combination for reversing (frame sizes S00 and S0)
Approvals
The
s
and
u
approvals only apply to complete contactor combinations and
not to combinations you have assembled from separate parts.
Switchover time
If the contactors are interlocked by means of their auxiliary switches (electri-
cal interlocking) or by mechanical interlocking, there is no overlapping of the
contacting and the arcing time between the contactors at switchover.
The switching times of the contactors are not affected by the mechanical
interlock.
Note for frame size S00:
At voltages of >500 V a switchover pause of 50 ms must be included.
AC-operated 3RT10 contactors in reversing or Dahlander mode require an
NC contact interlock and a switchover pause of 50 ms.
1
2
➀
1
2
3RU1.1
3RU1.2
S00 S0

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