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Siemens 3RW5244-6AC15 — Soft Starters

Siemens 3RW5244-6AC15 SIRIUS Soft Starter, 100 A, 200-600 V

MPN3RW5244-6AC15
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Siemens SIRIUS 3RW5244-6AC15 soft starter, 100 A min, 200-600 V, Class 10A/10E/20E, PROFIBUS, Modbus RTU/TCP, EtherNet/IP.

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MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RW5244-6AC15 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS

Power & Motor Rating

3RW5244-6AC15 — 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

3RW5244-6AC15 — Control & Connection
ParameterValue
Control supply voltage typeAC
Main circuit terminal typebusbar connection
Control circuit wire range, solid1x (0.5 ... 4.0 mm²), 2x (0.5 ... 2.5 mm²)
Control circuit wire range, finely stranded (with ferrule)1x (0.5 ... 2.5 mm²), 2x (0.5 ... 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.)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

3RW5244-6AC15 — 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

3RW5244-6AC15 — 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

3RW5244-6AC15 — 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

3RW5244-6AC15 — 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

3RW5244-6AC15 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

Clearance requirements: 100 mm above, 75 mm below, 10 mm forward, 5 mm to the side, and zero backward — plan your gland plate and busbar routing accordingly. Dimensions are 393 mm high, 210 mm wide, 203 mm deep — a substantial footprint; verify DIN-rail or backplate space before committing the panel layout.

Electrical ratings and trip class

Rated operating voltage 200–600 V AC, with a minimum settable current of 100 A — sized for medium motor loads in the 100 A range and above. Trip class is selectable: CLASS 10A (default), 10E, or 20E per IEC 60947-4-2. Class 10A protects standard induction motors during start; switch to 20E for high-inertia loads like centrifuges or long-ramp conveyors. Minimum load is 15 % of the smallest settable Ie — ensures the soft starter can handle lightly loaded motors without dropping out.

Communications and control

Onboard PROFIBUS DP, Modbus RTU, Modbus TCP, and EtherNet/IP — no separate gateway needed for most plant-floor networks. PROFINET standard and PROFIenergy are supported when paired with the PROFINET communication module (ordered separately). Analog output is 4–20 mA (default) or 0–10 V (parameterizable via High Feature HMI). Remote reset cycles the control supply voltage off/on.

Environmental and approvals

Operating ambient –25 to +60 °C, with derating required above 40 °C — account for cabinet heat rise when sizing ventilation. Shock resistance 15 g / 11 ms (12 g / 11 ms with potential contact lifting). CE, UL, and CSA approvals cover European and North American installations.

Frequently asked questions

Where can I buy 3RW5244-6AC15 and what is the lead time?

Sourcing buyers need immediate stock and delivery timeline to keep production lines moving without delays.

What is the price of Siemens 3RW5244-6AC15 soft starter?

Pricing is critical for BOM costing and budget approvals before purchase.

Is 3RW5244-6AC15 obsolete or still active?

Maintenance techs and brokers need to know if the part is end-of-life to plan maintenance or find substitutes.

What are the dimensions and wiring connection for 3RW5244-6AC15?

Design engineers must verify panel fit and wiring compatibility before specifying the device.

Does 3RW5244-6AC15 support Profibus or Modbus communication?

Engineers integrating into existing automation systems need to confirm communication protocol support.

What is a direct replacement or equivalent for 3RW5244-6AC15?

Sourcing and maintenance need alternative options if the exact part is unavailable or to compare features.

MPN
3RW5244-6AC15