SIEMENS
4/5
Siemens IC 10 · 2017
Contactors for Special Applications
SIRIUS 3RT.4 contactors for resistive loads (AC-1), 3-pole
4
■
Overview
Standards
IEC 60947-1, EN 60947-1,
IEC 60947-4-1, EN 60947-4-1,
IEC 60947-5-1, EN 60947-5-1 (auxiliary switches)
The contactors are suitable for use in any climate.
They are finger-safe according to IEC 60529.
3RT.4 contactors are used for switching resistive loads (AC-1)
or as contactors, that normally only have to carry the current,
for example for variable-speed operating mechanisms.
The accessories and spare parts of the 3RT contactors can also
be used here,
see from page 3/75 onwards
.
For a general description of 3RT contactors, sizes S3 to S12,
see from page 3/15 onwards
.
Size S3: AC or AC/DC operation
•
Coil circuits (varistors, diodes, etc.) retrofittable
•
Auxiliary switches can be retrofitted
•
Main and control conductors: Screw terminals
Sizes S6 to S12: AC/DC operation (50/60 Hz AC and DC)
•
Withdrawable coils with integrated coil circuit (varistor)
•
Auxiliary and control conductors: Screw terminals
•
Main conductors: Busbar connections
Operating mechanism types
Two types of solenoid operation are available:
•
Conventional operating mechanisms
•
Solid-state operating mechanism
- The operating mechanism for the contactors features solid-
state control of the contactor coil. Overvoltage damping of
the operating mechanism coil is already integrated in the
electronics. The operating mechanisms are powered via a
supply voltage with an operating range from 0.7 to 1.25 x
U
s
,
optionally also controlled depending on the chosen mode of
operation. Alternatively, control is via the separate 24 V DC
control signal input. Various rated voltage ranges for AC/DC
control are available.
- This version is additionally available with a 24 V DC PLC
relay output and a remaining lifetime indicator (RLT).
■
Technical specifications
More information
Technical specifications,
see
FAQs,
Manuals,
see
•
System Manual "SIRIUS – System Overview",
•
Manual "SIRIUS – SIRIUS 3RT Contactors/Contactor Assemblies",
•
Application Manual "SIRIUS Controls with IE3/IE4 Motors,
Type
3RT2446
3RT2448
3RT1456
3RT1466
3RT1476
Size
S3
S6
S10
S12
General data
Dimensions (W x H x D)
Basic units
mm
-
Screw/spring-type terminals
70 x 140 x 152
120 x 172 x 170
145 x 210 x 202
160 x 214 x 225
• With mounted auxiliary switch block
-
Screw terminals
mm
70 x 140 x 196
120 x 172 x 217
145 x 210 x 251
160 x 214 x 271
-
Spring-type terminals
mm
70 x 140 x 200
--
• Basic unit with mounted function
module or solid-state time-delayed
auxiliary switch block
-
Screw/spring-type terminals
mm
70 x 140 x 226
--
Permissible mounting position
The contactors are designed for operation on a vertical
mounting surface.
Upright mounting position
Special version required
--
Mechanical endurance
• Basic units and
Basic units with mounted auxiliary switch block
Operat-
ing cy-
cles
10 million
• Basic units with solid-state compatible auxiliary switch
block
Operat-
ing cy-
cles
5 million
--
Electrical endurance
for utilization category AC-1, at
I
e
Operat-
ing cy-
cles
0.5 million
W
H
D
360°
22,5°
22,5°
NSB0_00478c
NSB0_00649a
22,5° 22,5°
90°
90°
NSB0_00477a
© Siemens AG 2016