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Siemens 3RW5236-2AC04 — Soft Starters

Siemens 3RW5236-2AC04 Soft Starter, 81 A, Trip Class 10A

MPN3RW5236-2AC04
Active

Siemens SIRIUS 3RW5236-2AC04 soft starter, hybrid switching device, 81 A minimum, 200-480 V rated, Trip Class 10A/10E/20E per IEC 60947-4-2, screw fixing, 306 x 185 x 203 mm.

Siemens 3RW5236-2AC04 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RW5236-2AC04 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS
3RW5236-2AC04 — Power & Motor Rating
ParameterValue
Rated motor power at 400 V (40 °C)90 kW
Rated motor power at 230 V (40 °C)45 kW
Rated operational current at 40 °C296 A
Rated operational current at 50 °C265 A
Rated operational current at 60 °C244 A
Rated insulation voltage600 V
Minimum settable current (% of Ie)15 %; Relative to smallest settable Ie
Power loss during startup (50 °C)2 037 W
3RW5236-2AC04 — 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, 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.)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 %
3RW5236-2AC04 — 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
3RW5236-2AC04 — Mechanical
ParameterValue
Height306 mm
Width185 mm
Depth203 mm
Weight7.15 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
3RW5236-2AC04 — 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)
3RW5236-2AC04 — 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
3RW5236-2AC04 — 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 3RW5236-2AC04 is a SIRIUS soft starter rated for a minimum of 81 A at 200-480 V, with Trip Class 10A (default), 10E, or 20E selectable per IEC 60947-4-2. That Trip Class range means it can handle standard motor starts (10A) or extended acceleration for high-inertia loads like conveyors or fans (20E) — the same unit covers both without a hardware swap. It supports PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET standard, so it drops into most fieldbus architectures without a separate gateway. The analog output is configurable as 4-20 mA or 0-10 V for feeding motor current to a PLC or SCADA.

Screw fixing to a vertical mounting surface, rotatable ±90° and tiltable ±22.5° front-to-back. Clearance needs: 100 mm above, 75 mm below, 10 mm forward, 5 mm at the sides, 0 mm backward.

Frequently asked questions

What is the current rating and trip class of 3RW5236-2AC04?

The 3RW5236-2AC04 has a minimum current rating of 81 A at 200-480 V. Trip class is selectable: CLASS 10A (default), 10E, or 20E per IEC 60947-4-2.

Does the 3RW5236-2AC04 support PROFIBUS or Modbus TCP?

Yes, the 3RW5236-2AC04 supports PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET standard — all onboard without extra modules.

MPN
3RW5236-2AC04