Siemens SIRIUS System Manual

3RT1/3RH1 contactors
SIRIUS System Manual
3-80
GWA 4NEB 430 0999-02b
Mode of operation
The EMV suppression module reduces through 3 phases the radio-fre-
quency parts and the voltage peaks. The advantages of this are as follows:
• Longer service life of the contact pieces
• Higher operational reliability and high system availability
A fine grading within the performance class is not required because smaller
motors have greater inductance due to their construction, and one EMC sup-
pression module is thus sufficient for all non-stabilized drives up to 5.5 kW.
Varian ts
Two electrical variants are available:
•RC circuit
• Varistor switching
Installation
Figure 3-62: EMC suppression module
RC circuit
The RC circuit is suitable:
• For reducing the rate of rise
• In RF damping
Effective suppression can be achieved for a wide range of applications.
Varistor circuit
A varistor circuit can absorb a high level of energy and can be used for fre-
quencies from 10 to 400 Hz (stabilized drives). There is no limit below the
buckling stress.
The EMC suppression module is
attached to the underside of the
contactor. To do this, hook the
EMC suppression module with
both hooks onto the contactor,
and push it upward until the con-
nection pins of the EMC module
are firmly in place in the terminal
openings of the contactor.
1
2
3RT1916-1P..

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