Siemens SIRIUS System Manual

3RT1/3RH1 contactors
SIRIUS System Manual
GWA 4NEB 430 0999-02b
3-29
3.3.5.2 Contactors with an extended operating range
(3RH1122-2K.40, 3RT1017-2K.4., 3RT102.-3K.40)
Contactors of frame size S00: 3RH11 22-2K.40, 3RT1017-2K.4. and frame
size S0: 3RT102.-3K.40 have the following features:
• Extended operating range of 0.7 to 1.25 x U
s
• The magnet coils are wired with a varistor; an additional series resistor is
not required
• Permissible ambient temperature 60 °C
Note the following:
• Frame size S00: an auxiliary switch block cannot be attached
• Frame size S0: a maximum of two 1-pole auxiliary switch blocks can be
attached
Installation
At an ambient temperature > 60 °C < 70 °C, there must be spacing of
10 mm when installing in series.
Ambient temperature
The permissible ambient temperature for operating the contactors at the full
operating range of the magnet coils is -35 °C to +70 °C. During continuous
operation with temperatures > +55 °C, the mechanical service life, the cur-
rent-carrying capacity of the conducting paths, and the switching frequency
are reduced.
3.3.6 3RH1 auxiliary contactors
Auxiliary contactors are switching devices for auxiliary circuits for control-
ling, reporting, and interlocking. Auxiliary contactors have to meet specific
requirements in terms of clear terminal markings and a time- and cost-sav-
ing terminal system.
The SIRIUS 3RH1 auxiliary contactors (frame size S00) meet these require-
ments
Terminal markings
The terminal markings comply with EN 50 011 and EN 50 005 (for a more
detailed explanation, see Section 3.4.1, Auxiliary switches).
Frame size and features
3RH1 auxiliary contactors are available with the following:
•Frame size S00
• With AC and DC operation
• Format as for motor contactor of frame size S00
• 4-pole basic version
• Can be extended to 8 poles with snap-on auxiliary switch blocks
• Screw-type or Cage Clamp terminals
Screw-type terminals
The 3RH1 auxiliary contactors have captive screws (cross-tip Pozidriv,
size 2), with all the terminal points open on delivery. The screwdriver guides
allow screwdriving machines to be used.

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