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Siemens 3RW5236-6AC15 — Soft Starters

Siemens 3RW5236-6AC15 SIRIUS Soft Starter, 81 A min

MPN3RW5236-6AC15
Active

Siemens SIRIUS 3RW5236-6AC15 soft starter, 81 A minimum set current, 200-600 V, trip class 10A/10E/20E, PROFIBUS/Modbus RTU/Modbus TCP/EtherNet/IP/PROFINET, 306 x 185 x 203 mm.

Siemens 3RW5236-6AC15 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RW5236-6AC15 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS
3RW5236-6AC15 — 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
3RW5236-6AC15 — Control & Connection
ParameterValue
Control supply voltage typeAC
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
Auxiliary contact rating (UL)R300-B300
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 %
Operating voltage tolerance, inside-delta (max.)10 %
Operating voltage tolerance, inside-delta (min.)-15 %
3RW5236-6AC15 — 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
3RW5236-6AC15 — 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
3RW5236-6AC15 — 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)
3RW5236-6AC15 — 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
3RW5236-6AC15 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

Trip class and current setting — what they mean for motor protection

The 3RW5236-6AC15: This soft starter carries a default trip class of CLASS 10A per IEC 60947-4-2, with selectable 10E or 20E for longer ramp times. The minimum set current is 81 A — that is the floor for the motor full-load current you can protect; anything below and the overload curve won't engage properly. Service factor is 1.0 — no built-in headroom for continuous overload above nameplate.

Panel fit and mounting constraints

Dimensions are 306 mm high, 185 mm wide, 203 mm deep — screw-fixing mount, not DIN-rail snap-on. The mounting position allows vertical surface with ±90° rotation and ±22.5° tilt front-to-back. Clearance requirements: 100 mm upwards, 10 mm forwards, 75 mm downwards, 5 mm at the sides, 0 mm backwards. The shock resistance is 15 g / 11 ms, dropping to 12 g / 11 ms if contact lifting is a concern.

Communication and control — fieldbus options

Built-in fieldbus support includes PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET (with PROFIenergy when using the PROFINET standard communication module). Analog output is configurable 4-20 mA default or 0-10 V with the High Feature HMI. Remote reset is possible by cycling the control supply voltage. Auto-reset is enabled. Pump ramp-down and soft torque are standard; torque control is not available. Firmware updates are supported.

Frequently asked questions

Will 3RW5236-6AC15 drop into a panel designed for 6ED1052-1MD08-0BA1?

No — 6ED1052-1MD08-0BA1 is a LOGO! logic module, not a soft starter. They serve different functions and have different footprints; no direct panel swap is possible without rewiring.

MPN
3RW5236-6AC15