Skip to main content
Log in
Siemens 3RW5236-2AC05 — Soft Starters

Siemens 3RW5236-2AC05 SIRIUS Soft Starter, 81 A, 200-600 V

MPN3RW5236-2AC05
Active

Siemens SIRIUS 3RW5236-2AC05 soft starter, 81 A minimum, 200-600 V, Class 10A/10E/20E, screw fixing, 306 x 185 x 203 mm.

Siemens 3RW5236-2AC05 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RW5236-2AC05 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS
3RW5236-2AC05 — 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
3RW5236-2AC05 — 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 %
3RW5236-2AC05 — 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
3RW5236-2AC05 — 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
3RW5236-2AC05 — 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)
3RW5236-2AC05 — 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
3RW5236-2AC05 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

81 A minimum, 200-600 V, Class 10A/10E/20E

The 3RW5236-2AC05: This SIRIUS soft starter is rated for a minimum operating current of 81 A at a supply voltage range of 200 to 600 V. The trip class is selectable: default is CLASS 10A, with options for 10E and 20E per IEC 60947-4-2. The minimum load is 15 % relative to the smallest settable Ie, so it can handle lightly loaded motors without dropping out of regulation.

Communication and control options

Built-in communication includes PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET standard. PROFIenergy is supported in connection with the PROFINET Standard communication module. This makes the 3RW5236-2AC05 suitable for networked automation lines where energy management and remote monitoring are required. The analog output is configurable as 4-20 mA (default) or 0-10 V (parameterizable with High Feature HMI). Remote reset is possible by cycling the control supply voltage. Auto-reset is also supported. Soft torque and pump ramp down features are included, reducing mechanical stress on the load and preventing water hammer in pump applications.

Mounting and environmental ratings

Fastening is by screw fixing. The mounting position allows a vertical mounting surface with ±90° rotation and ±22.5° tilt to front and back. Clearances: 100 mm upwards, 10 mm forwards, 0 mm backwards, 75 mm downwards, 5 mm at the side. Dimensions are 306 mm height, 185 mm width, 203 mm depth. Shock resistance is 15 g / 11 ms, from 12 g / 11 ms with potential contact lifting. Pollution degree 3 per IEC 60947-4-2.

Approvals and compliance

CE marking, UL approval, and CSA approval are all confirmed. The product category is hybrid switching devices. Service factor is 1.

Frequently asked questions

What is the minimum current rating for the 3RW5236-2AC05?

The minimum operating current is 81 A, at a supply voltage range of 200 to 600 V.

What trip classes are available on this soft starter?

The trip class is selectable: default CLASS 10A, with options for 10E and 20E, per IEC 60947-4-2.

What communication protocols does the 3RW5236-2AC05 support?

It supports PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET standard. PROFIenergy is supported with the PROFINET communication module.

What approvals does the 3RW5236-2AC05 carry?

CE marking, UL approval, and CSA approval are all confirmed.

MPN
3RW5236-2AC05