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Siemens 3RW5073-2AB15 — Soft Starters

Siemens 3RW5073-2AB15 Soft Starter, 100 A Min, ATEX, Active

MPN3RW5073-2AB15
Active

Siemens 3RW5073-2AB15 hybrid soft starter, 100 A minimum, 200-600 V rated, ATEX/IECEx, trip class 10A/10E/20E, PROFIBUS/Modbus/EtherNet/IP, 282 mm depth.

Siemens 3RW5073-2AB15 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RW5073-2AB15 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS
3RW5073-2AB15 — 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 °C250 A
Rated operational current at 50 °C220 A
Rated operational current at 60 °C200 A
Rated insulation voltage600 V
Minimum settable current (% of Ie)15 %; Relative to smallest settable Ie
Power loss during startup (50 °C)2 043 W
3RW5073-2AB15 — 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
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 %
3RW5073-2AB15 — 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
3RW5073-2AB15 — 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
3RW5073-2AB15 — 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)
3RW5073-2AB15 — 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
3RW5073-2AB15 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

ATEX-rated soft starter for hazardous-area motor control

The Siemens 3RW5073-2AB15 is a hybrid switching device rated for soft starting motors in ATEX-classified zones, carrying both ATEX and IECEx certification. This means it can be specified into Ex-rated installations without an additional isolation barrier — the starter itself is the certified interface between the supply and the motor in a potentially explosive atmosphere. Minimum operating current is 100 A, with a rated voltage range of 200 to 600 V, covering standard low-voltage motor networks globally. The trip class is selectable between CLASS 10A, 10E (preset), and 20E per IEC 60947-4-2 — choose 10A for standard motor protection, 10E for electronic overload relay coordination, or 20E for high-inertia loads that need a longer acceleration window before tripping.

Fieldbus suite and control flexibility

Onboard communications include PROFIBUS, Modbus RTU, Modbus TCP, and EtherNet/IP, so it drops into most industrial networks without a separate gateway. PROFIenergy support is available when paired with the PROFINET standard communication module — useful for energy-aware production lines that power down motors during idle shifts. The analog output is configurable as 4-20 mA or 0-10 V via the High Feature HMI, giving the controls engineer a live current or voltage signal proportional to motor load for trending or SCADA integration. Remote reset is achieved by cycling the control supply voltage — no field visit required after a trip.

Mounting and environmental limits

Mounting is screw-fixing with a vertical surface orientation; the unit can be rotated ±90° or tilted ±22.5° forward and back, so it fits into panels where the DIN rail is already populated. Clearance requirements are 100 mm upward, 10 mm forward, 0 mm backward, 75 mm downward, and 5 mm at the sides — plan the enclosure layout around these gaps for airflow and wiring access. Shock resistance is 15 g for 11 ms, or 12 g if potential contact lifting is a concern, which covers most industrial vibration profiles from conveyors to compressors.

Frequently asked questions

How do I get current pricing and availability for 3RW5073-2AB15?

Submit an RFQ through the storefront. No stock-holding claim is made; sourced per RFQ from authorized distribution.

What is 3RW5073-2AB15's listed ATEX certification?

ATEX certification is listed as Yes, alongside IECEx. This qualifies the soft starter for installation in potentially explosive atmospheres per the ATEX directive, without requiring an external isolation barrier.

What compliance documentation does Siemens provide for 3RW5073-2AB15?

The unit carries CE marking, UL approval, and CSA approval. These cover regulatory acceptance across the EU, US, and Canada. RoHS and REACH documentation is standard with Siemens industrial products; request it at RFQ if needed for your compliance file.

MPN
3RW5073-2AB15