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Siemens 3RW5234-6AC05 — Soft Starters

Siemens 3RW5234-6AC05 SIRIUS Soft Starter, 200-600 V

MPN3RW5234-6AC05
Active

Siemens SIRIUS 3RW5234-6AC05 soft starter, 200-600 V, minimum setting 53 A, Trip Class 10A/10E/20E, PROFIBUS/Modbus RTU-TCP/EtherNet/IP, screw fixing, 306x185x203 mm.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RW5234-6AC05 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS
3RW5234-6AC05 — Power & Motor Rating
ParameterValue
Rated motor power at 400 V (40 °C)55 kW
Rated motor power at 230 V (40 °C)30 kW
Rated operational current at 40 °C196 A
Rated operational current at 50 °C175 A
Rated operational current at 60 °C154 A
Rated insulation voltage600 V
Minimum settable current (% of Ie)15 %; Relative to smallest settable Ie
Power loss during startup (50 °C)1 291 W
3RW5234-6AC05 — 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
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 %
3RW5234-6AC05 — 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
3RW5234-6AC05 — Mechanical
ParameterValue
Height306 mm
Width185 mm
Depth203 mm
Weight6.6 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
3RW5234-6AC05 — 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)
3RW5234-6AC05 — 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
3RW5234-6AC05 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

The 3RW5234-6AC05: Trip Class is configurable between CLASS 10A (default), 10E, and 20E per IEC 60947-4-2, which governs the thermal overload protection curve for the motor. CLASS 10A suits standard starting duty; the 20E setting extends the allowable start time for high-inertia loads without nuisance tripping. Communication options include PROFIBUS, Modbus RTU, Modbus TCP, and EtherNet/IP, plus PROFINET standard and PROFIenergy for energy management when paired with the PROFINET communication module. This makes it a fit for lines running Siemens S7 or third-party controllers over common fieldbuses.

Mounting is by screw fixing on a vertical surface, rotatable ±90° and tiltable ±22.5° front-to-back. Clearance requirements: 100 mm above, 75 mm below, 10 mm forward, 5 mm at the side, 0 mm backward — these are the minimum air gaps for airflow and cable entry, not optional. Dimensions are 306 mm high, 185 mm wide, 203 mm deep. Panel layout must account for the screw-fixing footprint plus the specified clearances; the 185 mm width is the widest dimension across the housing.

The 3RW5234-6AC05 carries CE, UL, and CSA approvals, so it is accepted in European, US, and Canadian installations without additional agency review.

Frequently asked questions

What communication protocols does the 3RW5234-6AC05 support?

It supports PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET standard, plus PROFIenergy when used with the PROFINET communication module.

What is the trip class of 3RW5234-6AC05?

Trip Class is configurable: CLASS 10A (default), 10E, or 20E per IEC 60947-4-2.

Does 3RW5234-6AC05 support Modbus TCP?

Yes, it supports Modbus TCP, along with Modbus RTU, PROFIBUS, EtherNet/IP, and PROFINET standard.

MPN
3RW5234-6AC05