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Siemens 3RW5247-2AC14 — Soft Starters

Siemens 3RW5247-2AC14 SIRIUS Soft Starter, 200-480V, 470A

MPN3RW5247-2AC14
Active

Siemens SIRIUS 3RW5247-2AC14 soft starter, 200–480 V, 200–470 A, Class 10A / 10E / 20E, screw fixing, 393 × 210 × 203 mm.

StockContact for availability
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

3RW5247-2AC14 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS

Power & Motor Rating

3RW5247-2AC14 — Power & Motor Rating
ParameterValue
Rated motor power at 400 V (40 °C)250 kW
Rated motor power at 230 V (40 °C)132 kW
Rated operational current at 40 °C814 A
Rated operational current at 50 °C721 A
Rated operational current at 60 °C658 A
Rated insulation voltage600 V
Minimum settable current (% of Ie)15 %; Relative to smallest settable Ie
Power loss during startup (50 °C)6 604 W

Control & Connection

3RW5247-2AC14 — 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 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

3RW5247-2AC14 — 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

3RW5247-2AC14 — 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

3RW5247-2AC14 — 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

3RW5247-2AC14 — 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

3RW5247-2AC14 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

Motor-starting duty and trip class

The 3RW5247-2AC14: Rated 200... 480 V with a minimum setting of 200 A, so it covers standard 400 VAC three-phase motor loads up to roughly 250 kW depending on service factor and duty cycle. Trip class defaults to CLASS 10A per IEC 60947-4-2, with selectable 10E and 20E for higher-inertia starts — the 10A setting protects standard squirrel-cage motors during acceleration without nuisance tripping on normal start curves.

Fieldbus and control interface

Supports PROFIBUS, PROFINET (with PROFIenergy via the standard communication module), Modbus RTU, Modbus TCP, and EtherNet/IP. The analog output is configurable 4... 20 mA or 0... 10 V through the High Feature HMI. Remote reset is handled by cycling the control supply voltage. Screw-fixing mount on a vertical surface, rotatable ±90° and tiltable ±22.5°.

Clearences and thermal limits

Minimum clearances: 100 mm upwards, 75 mm downwards, 10 mm forwards, 5 mm at the side — essential for airflow and safe isolation in a panel. Operating temperature range –25... +60 °C with derating above 40 °C. Shock resistance 15 g / 11 ms. Minimum load is 15 % of the smallest settable Ie.

Lifecycle and approvals

Listed as current production. Carries CE, UL, and CSA approvals — accepted across North American and European panels without additional certification cost.

Frequently asked questions

Where to buy 3RW5247-2AC14?

This part is available to order against an RFQ. Pricing and lead time are confirmed at quote time — no stock count or ship promise on this page.

What are the fieldbus options for 3RW5247-2AC14?

It supports PROFIBUS, PROFINET (with PROFIenergy), Modbus RTU, Modbus TCP, and EtherNet/IP, making it compatible with most common industrial networks.

MPN
3RW5247-2AC14