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Siemens 3RW5244-2TC14 — Soft Starters

Siemens 3RW5244-2TC14 SIRIUS Soft Starter, 100 A, 200-480 V

MPN3RW5244-2TC14
Active

Siemens SIRIUS 3RW5244-2TC14 hybrid soft starter, 100 A minimum rated current, 200-480 V operating voltage, Trip Class 10A/10E/20E, PROFIBUS/PROFINET/Modbus/EtherNet/IP, 393x210x203 mm screw fixing.

Siemens 3RW5244-2TC14 datasheet (PDF)
StockContact for availability
Lead time3-5 Days wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RW5244-2TC14 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS

Power & Motor Rating

3RW5244-2TC14 — 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

3RW5244-2TC14 — Control & Connection
ParameterValue
Control supply voltage typeAC
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 outputNo
Auxiliary contact rated current, AC-15 at 250 V3 A
Auxiliary contact rating (UL)R300-B300
Control supply voltage tolerance, AC 50 Hz (max.)10 %
Control supply voltage tolerance, AC 50 Hz (min.)-15 %
Control supply voltage tolerance, AC 60 Hz (max.)10 %
Control supply voltage tolerance, AC 60 Hz (min.)-15 %
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

3RW5244-2TC14 — Protection & Features
ParameterValue
Motor overload protectionYes; Full motor protection (thermistor motor protection and electronic motor overload protection)
Thermistor motor protectionYes; Type A PTC or Klixon / Thermoclick
Adjustable current limitationYes
Inside-delta connectionYes
Intrinsic device protectionYes
Pollution degree3, acc. to IEC 60947-4-2

Mechanical

3RW5244-2TC14 — 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

3RW5244-2TC14 — 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

3RW5244-2TC14 — 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

3RW5244-2TC14 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

Trip Class and motor protection — what the 10A/10E/20E rating means

The 3RW5244-2TC14 offers selectable Trip Class 10A (default), 10E, or 20E per IEC 60947-4-2. The trip class sets the trade-off between nuisance tripping on normal starts and protecting the motor winding from a locked-rotor event.

Fieldbus connectivity for integrated control

This soft starter carries onboard PROFIBUS, PROFINET (standard), Modbus RTU, Modbus TCP, and EtherNet/IP — covering the main industrial Ethernet and fieldbus protocols without an external gateway. PROFIenergy is supported in conjunction with the PROFINET communication module, allowing the starter to participate in coordinated energy management during production pauses.

Mounting and panel integration

Screw fixing to a vertical mounting surface, with ±90° rotation and ±22.5° tilt to front/back permitted. The enclosure dimensions are 393 mm height, 210 mm width, 203 mm depth — allow 100 mm clearance above, 75 mm below, 10 mm forward, 5 mm at the sides, and 0 mm backward for airflow and cable bending radius.

Soft Torque and Pump Ramp Down for load-specific starting

Soft Torque and Pump Ramp Down are built-in features. Soft Torque reduces the initial current spike on lightly loaded starts by ramping the torque more gradually than a standard voltage ramp. Pump Ramp Down extends the deceleration ramp on pump motors to prevent water hammer from a sudden stop — this avoids pressure surges in the piping that can damage seals and valves.

Frequently asked questions

What is the minimum current rating for the 3RW5244-2TC14?

The minimum settable current is 100 A, with a minimum load of 15% relative to the smallest settable Ie. This means the soft starter is sized for motors drawing at least 100 A at full load — below that, the current setting range cannot provide adequate protection.

What compliance documentation does Siemens provide for 3RW5244-2TC14?

The 3RW5244-2TC14 carries CE marking, UL approval, and CSA approval. These certifications cover the standard industrial control equipment directives for European and North American installations. No RoHS or REACH declarations are listed in the available spec data, but CE marking implies compliance with applicable EU directives including RoHS.

What is the shock resistance rating of the 3RW5244-2TC14?

The soft starter is rated for 15 g / 11 ms shock resistance, with potential contact lifting starting at 12 g / 11 ms. This means it withstands the vibration and shock typical of industrial motor starter applications without relay chatter or contact damage.

MPN
3RW5244-2TC14