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Siemens 3RW5248-6TC04 — Soft Starters

Siemens 3RW5248-6TC04 SIRIUS Soft Starter, 240 A, 200-480 V

MPN3RW5248-6TC04
Active

Siemens SIRIUS 3RW5248-6TC04 soft starter, 240 A minimum, 200-480 V, Trip Class 10A/10E/20E, PROFIBUS, PROFINET, Modbus RTU/TCP, EtherNet/IP, screw fixing, 393 x 210 x 203 mm.

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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

3RW5248-6TC04 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS

Power & Motor Rating

3RW5248-6TC04 — Power & Motor Rating
ParameterValue
Rated motor power at 400 V (40 °C)315 kW
Rated motor power at 230 V (40 °C)160 kW
Rated operational current at 40 °C987 A
Rated operational current at 50 °C873 A
Rated operational current at 60 °C796 A
Rated insulation voltage600 V
Minimum settable current (% of Ie)15 %; Relative to smallest settable Ie
Power loss during startup (50 °C)8 500 W

Control & Connection

3RW5248-6TC04 — 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, 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 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.)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

3RW5248-6TC04 — 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

3RW5248-6TC04 — Mechanical
ParameterValue
Height393 mm
Width210 mm
Depth203 mm
Weight10.6 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

3RW5248-6TC04 — 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

3RW5248-6TC04 — 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

3RW5248-6TC04 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

Soft starter for motor starting duty

The Siemens SIRIUS 3RW5248-6TC04 is a hybrid switching device — a soft starter — sized for a minimum motor current of 240 A on a 200-480 V supply. The Trip Class is selectable between CLASS 10A (default), 10E, or 20E per IEC 60947-4-2, which governs how long the starter can carry locked-rotor current during acceleration. CLASS 10A suits standard starting for pumps and fans; 20E gives extra time for high-inertia loads like centrifuges or crushers. Built-in communication covers PROFIBUS, PROFINET standard, Modbus RTU, Modbus TCP, and EtherNet/IP, so it drops into most plant networks without a gateway. PROFIenergy is supported in connection with the PROFINET communication module, allowing coordinated energy-saving pauses during idle periods. Mounting is screw fixing on a vertical surface, rotatable ±90° and tiltable ±22.5° front-to-back. The enclosure measures 393 mm high by 210 mm wide by 203 mm deep — plan panel depth accordingly.

Frequently asked questions

Does 3RW5248-6TC04 support PROFINET communication?

Yes, PROFINET standard is built in, along with PROFIenergy when used with the PROFINET communication module. The starter also supports PROFIBUS, Modbus RTU, Modbus TCP, and EtherNet/IP.

What is the trip class of 3RW5248-6TC04?

The trip class is selectable: CLASS 10A (default), CLASS 10E, or CLASS 20E, per IEC 60947-4-2. CLASS 10A is for standard motor starts; CLASS 20E provides extended time for high-inertia loads.

Where can I buy 3RW5248-6TC04?

This part is sourced to order; availability and pricing are confirmed at quote time.

MPN
3RW5248-6TC04