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Siemens 3RW5075-6AB04 — Soft Starters

Siemens 3RW5075-6AB04 Soft Starter, 160 A, 200-480 V, ATEX

MPN3RW5075-6AB04
Active

Siemens SIRIUS 3RW5075-6AB04 soft starter, 160 A minimum rated current, 200-480 VAC, Trip Class 10A/10E/20E, ATEX/UKEX/IECEx, with Modbus TCP, EtherNet/IP, PROFINET.

Siemens 3RW5075-6AB04 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RW5075-6AB04 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS
3RW5075-6AB04 — Power & Motor Rating
ParameterValue
Rated motor power at 400 V (40 °C)200 kW
Rated motor power at 230 V (40 °C)110 kW
Rated operational current at 40 °C370 A
Rated operational current at 50 °C328 A
Rated operational current at 60 °C300 A
Rated insulation voltage600 V
Minimum settable current (% of Ie)15 %; Relative to smallest settable Ie
Power loss during startup (50 °C)3 124 W
3RW5075-6AB04 — 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 outputYes; 4 ... 20 mA (default) / 0 ... 10 V (parameterizable with High Feature HMI)
Auxiliary contact rated current, AC-15 at 250 V3 A
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 %
3RW5075-6AB04 — Protection & Features
ParameterValue
Motor overload protectionYes; Electronic motor overload protection
Thermistor motor protectionNo
Adjustable current limitationYes
Intrinsic device protectionYes
Pollution degree3, acc. to IEC 60947-4-2
3RW5075-6AB04 — Mechanical
ParameterValue
Height230 mm
Width160 mm
Depth282 mm
Weight7.3 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
3RW5075-6AB04 — 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 Manual
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)
3RW5075-6AB04 — Specifications
ParameterValue
Trip ClassCLASS 10A / 10E (preset) / 20E; acc. to IEC 60947-4-2
Number Of Controlled Phases2
Utilization category according to IEC 60947-4-2AC-53a
Product Feature Integrated Bypass Contact SystemYes
Start-Up Ramp Time Of Soft Starter0 ... 20 s
Ramp-Down Time Of Soft Starter0 ... 20 s
3RW5075-6AB04 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

Rated current and trip class — what governs motor protection

The Siemens 3RW5075-6AB04 soft starter carries a minimum rated current of 160 A, setting the floor for the motor FLA it can manage. Trip class is selectable among CLASS 10A, 10E (preset), and 20E per IEC 60947-4-2 — meaning the overload protection curve matches the motor start profile: CLASS 10 for faster starts (centrifugal pumps, fans), CLASS 20 for higher-inertia loads (conveyors, crushers). The preset 10E is the default; if your application needs the longer acceleration window, you parameterize it to 20E.

Voltage range and fieldbus — panel integration constraints

Rated supply voltage spans 200 to 480 V, covering common global low-voltage three-phase networks (208 V, 230 V, 400 V, 480 V). Communication options are broad: Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET standard are all on board, plus PROFIBUS. That means the 3RW5075-6AB04 drops into a modern control architecture without a separate gateway — one Ethernet cable to the PLC handles parameterization, diagnostics, and the error logbook (the latter requires a special accessory). The analog output is configurable as 4-20 mA (default) or 0-10 V, settable via the High Feature HMI.

Environmental and mounting — enclosure planning

Mounting is screw fixing on a vertical surface, rotatable ±90° and tiltable ±22.5° forward/back. Clearance requirements: 100 mm upward, 75 mm downward, 10 mm forward, 0 mm backward, 5 mm at the sides. Shock resistance is 15 g / 11 ms, derated to 12 g / 11 ms if potential contact lifting is a concern. Dimensions: 230 mm high, 160 mm wide, 282 mm deep.

Hazardous-area certifications — ATEX, UKEX, IECEx

The 3RW5075-6AB04 carries ATEX, UKEX, and IECEx certification. That means it is approved for installation in potentially explosive atmospheres (gas and dust) per the respective directives — not just a general-purpose industrial soft starter. For a panel builder or MRO planner working in a Zone-classified environment (chemical, oil & gas, grain handling), this certification is the gatekeeper: without it, the starter cannot be specified. CE and UL/CSA approvals are also present, covering European and North American markets.

Frequently asked questions

What is the rated current of the 3RW5075-6AB04 soft starter?

The minimum rated current is 160 A. This is the floor for the motor full-load amps the soft starter can manage. The trip class is selectable among CLASS 10A, 10E (preset), and 20E per IEC 60947-4-2.

Is the 3RW5075-6AB04 compatible with Modbus TCP?

Yes, Modbus TCP is supported, along with Modbus RTU, EtherNet/IP, PROFINET standard, and PROFIBUS. No separate gateway is needed for a modern PLC network.

What hazardous-area certifications does the 3RW5075-6AB04 carry?

ATEX, UKEX, and IECEx certification are all listed. This qualifies the soft starter for installation in explosive atmospheres per the respective directives, plus CE and UL/CSA for general industrial use.

MPN
3RW5075-6AB04