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Siemens 3RW5244-2AC05 — Soft Starters

Siemens 3RW5244-2AC05 SIRIUS Soft Starter, 100 A, 200-600 V

MPN3RW5244-2AC05
Active

Siemens SIRIUS 3RW5244-2AC05 soft starter, 100 A, 200-600 V, Class 10A/10E/20E, PROFIBUS, PROFINET, EtherNet/IP, Modbus RTU/TCP, screw fixing, 203 x 210 x 393 mm.

Siemens 3RW5244-2AC05 datasheet (PDF)
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Lead timeIn Stock wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RW5244-2AC05 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS

Power & Motor Rating

3RW5244-2AC05 — Power & Motor Rating
ParameterValue
Rated motor power at 400 V (40 °C)132 kW
Rated motor power at 230 V (40 °C)75 kW
Rated operational current at 40 °C433 A
Rated operational current at 50 °C381 A
Rated operational current at 60 °C346 A
Rated insulation voltage600 V
Minimum settable current (% of Ie)15 %; Relative to smallest settable Ie
Power loss during startup (50 °C)3 188 W

Control & Connection

3RW5244-2AC05 — Control & Connection
ParameterValue
Control supply voltage typeAC/DC
Rated voltage at 50 Hz24 V
Rated voltage at 60 Hz24 V
Main circuit terminal typebusbar connection
Control circuit wire range, solid2x (0.25 ... 1.5 mm²)
Control circuit wire range, finely stranded (with ferrule)2x (0.25 ... 1.5 mm²)
Analog outputYes; 4 ... 20 mA (default) / 0 ... 10 V (parameterizable with High Feature HMI)
Auxiliary contact rated current, AC-15 at 250 V3 A
Auxiliary contact rating (UL)R300-B300
Control supply voltage tolerance, AC 50 Hz (max.)20 %
Control supply voltage tolerance, AC 50 Hz (min.)-20 %
Control supply voltage tolerance, AC 60 Hz (max.)20 %
Control supply voltage tolerance, AC 60 Hz (min.)-20 %
Control supply frequency tolerance (max.)10 %
Control supply frequency tolerance (min.)-10 %
Operating frequency tolerance (max.)10 %
Operating frequency tolerance (min.)-10 %
Operating voltage tolerance, inside-delta (max.)10 %
Operating voltage tolerance, inside-delta (min.)-15 %

Protection & Features

3RW5244-2AC05 — Protection & Features
ParameterValue
Motor overload protectionYes; Electronic motor overload protection
Thermistor motor protectionNo
Adjustable current limitationYes
Inside-delta connectionYes
Intrinsic device protectionYes
Pollution degree3, acc. to IEC 60947-4-2

Mechanical

3RW5244-2AC05 — Mechanical
ParameterValue
Height393 mm
Width210 mm
Depth203 mm
Weight9.9 kg
Mounting positionwith vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back
Fastening methodscrew fixing
Mounting clearance, top100 mm
Mounting clearance, bottom75 mm
Mounting clearance, side5 mm
Mounting clearance, front10 mm

Environmental

3RW5244-2AC05 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C; Please observe derating at temperatures of 40 °C or above
Storage / transport temperature range-40 ... +80 °C
Max. installation altitude5 000 m; Derating as of 1000 m, see catalog
Ambient class during operation (IEC 60721)3K6 (no ice formation, only occasional condensation), 3C3 (no salt mist), 3S2 (sand must not get into the devices), 3M6
Ambient class during transport (IEC 60721)2K2, 2C1, 2S1, 2M2 (max. fall height 0.3 m)

Specifications

3RW5244-2AC05 — Specifications
ParameterValue
Trip ClassCLASS 10A (default) / 10E / 20E; acc. to IEC 60947-4-2
Number Of Controlled Phases3
Utilization category according to IEC 60947-4-2AC 53a
Product Feature Integrated Bypass Contact SystemYes
Start-Up Ramp Time Of Soft Starter0 ... 20 s

Electrical

3RW5244-2AC05 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

SIRIUS 3RW5244-2AC05 — form factor and fieldbus fit

Dimensions are 203 mm deep by 210 mm wide by 393 mm high, fastened by screw fixing, and it mounts on a vertical surface with ±90° rotation and ±22.5° tilt front/back — panel layout needs to account for the 393 mm height and the 100 mm upward / 75 mm downward clearance for airflow. Fieldbus options include PROFIBUS, PROFINET, EtherNet/IP, Modbus RTU, and Modbus TCP — the PROFINET variant supports PROFIenergy when paired with the standard communication module.

Ambient limits and derating

Operating ambient is -25°C to +60°C during operation, with a derating note above 40°C — the 100 A rating is at the base temperature; expect to reduce current if the panel ambient climbs above 40°C. Pollution degree 3 per IEC 60947-4-2 means the unit tolerates conductive pollution in industrial environments, but the 15 g / 11 ms shock rating (with potential contact lifting above 12 g) sets a vibration limit for mounting near heavy machinery.

Frequently asked questions

What are the key ratings of the 3RW5244-2AC05?

Minimum current is 100 A, rated voltage 200-600 V, trip classes CLASS 10A/10E/20E per IEC 60947-4-2. Operating ambient -25°C to +60°C with derating above 40°C.

Does the 3RW5244-2AC05 support PROFIBUS or EtherNet/IP?

Yes — it supports PROFIBUS, PROFINET, EtherNet/IP, Modbus RTU, and Modbus TCP. The PROFINET variant also supports PROFIenergy with the standard communication module.

MPN
3RW5244-2AC05