Siemens SIRIUS System Manual

3RT1/3RH1 contactors
SIRIUS System Manual
GWA 4NEB 430 0999-02b
3-53
Electronically opti-
mized auxiliary switch
blocks
The electronically optimized auxiliary switch blocks contain enclosed switch-
ing elements that are particularly suitable for switching low voltages and
currents (hard gold-plated contacts) as well as for use in dusty atmospheres.
The rated operational current is I
e
/AC-14 and DC-13: 1 to 300 mA, voltage: 3
to 60 V.
The electronically optimized auxiliary switch blocks are available as screw-
type or Cage Clamp terminal types:
• Frame size S00 (3RH1911-.NF..): Has two enclosed auxiliary contacts (1
NO contact + 1 NC contact, 2 NO or 2 NC contacts
• Frame sizes S0 to S3 (3RH1921-.FE22): Has two enclosed auxiliary con-
tacts and two standard auxiliary contacts, each 1 NO contact + 1 NC con-
tact
• The switched current is in acc. with the VDE 0435 regulation for relays.
Auxiliary contacts
The following table gives you an overview of all the available auxiliary con-
tacts:
Table 3-22: Auxiliary switch blocks
Adding to the auxiliary
contacts
• The 3RT10 basic units of frame size S00 with an integrated auxiliary con-
tact can be supplemented with up to 4 contacts using attachable auxiliary
switches.
• The basic units of frame sizes S0 to S3 do not have any auxiliary switches,
but auxiliary switches can be attached at the front or the side.
Auxiliary contacts and atta-
chable accessories
Frame size S00 Frame sizes S0 to S3
Integrated auxiliary contact 1 integrated auxiliary
contact
---
4-pole auxiliary switch Attachable at the front Attachable at the front
2-pole auxiliary switch Attachable at the front ---
1-pole auxiliary switch --- Attachable at the front
1-pole auxiliary switch (infeed
from 1 side)
Attachable at the front ---
2-pole auxiliary switch (infeed
from 1 side)
Attachable at the front Attachable at the front
2-pole auxiliary switch --- Attachable at the side
Time-delay auxiliary switch
blocks
Attachable at the front Attachable at the front
Electronically optimized auxil-
iary switches
Attachable at the front Attachable at the front

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