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Siemens 3RW5227-1TC05 — Soft Starters

Siemens 3RW5227-1TC05 SIRIUS Soft Starter, 200-600 V

MPN3RW5227-1TC05
Active

Siemens SIRIUS 3RW5227-1TC05 soft starter, 200-600 V, 40.5 A minimum, adjustable trip class, multi-protocol fieldbus.

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

Specifications

3RW5227-1TC05 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS
3RW5227-1TC05 — Power & Motor Rating
ParameterValue
Rated motor power at 400 V (40 °C)45 kW
Rated motor power at 230 V (40 °C)22 kW
Rated operational current at 40 °C161 A
Rated operational current at 50 °C143 A
Rated operational current at 60 °C131 A
Rated insulation voltage600 V
Minimum settable current (% of Ie)15 %; Relative to smallest settable Ie
Power loss during startup (50 °C)1 077 W
3RW5227-1TC05 — Control & Connection
ParameterValue
Control supply voltage typeAC/DC
Rated voltage at 50 Hz24 V
Rated voltage at 60 Hz24 V
Main circuit terminal typebox terminal
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 outputNo
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 %
3RW5227-1TC05 — Protection & Features
ParameterValue
Motor overload protectionYes; Full motor protection (thermistor motor protection and electronic motor overload protection)
Thermistor motor protectionYes; Type A PTC or Klixon / Thermoclick
Adjustable current limitationYes
Inside-delta connectionYes
Intrinsic device protectionYes
Pollution degree3, acc. to IEC 60947-4-2
3RW5227-1TC05 — Mechanical
ParameterValue
Height306 mm
Width185 mm
Depth203 mm
Weight6.9 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
3RW5227-1TC05 — 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)
3RW5227-1TC05 — 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
3RW5227-1TC05 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

Soft starter for motor control — 40.5 A minimum, adjustable trip class

The Siemens 3RW5227-1TC05 is a SIRIUS soft starter designed for three-phase induction motor starting, with a minimum operating current of 40.5 A and a rated voltage range of 200 to 600 V. Its trip class is adjustable between CLASS 10A (default), 10E, and 20E per IEC 60947-4-2, meaning you can match the thermal overload protection to the motor's starting profile — CLASS 10A for standard starts, 10E for extended acceleration, or 20E for high-inertia loads like fans and centrifuges.

Mounting and environment — screw-fix, 306 mm tall, derate above 40 °C

Mounts via screw fixing on a vertical surface, rotatable ±90° and tiltable ±22.5° front-to-back. Dimensions are 306 mm high, 185 mm wide, 203 mm deep — plan the enclosure gland plate and cable entry accordingly.

Frequently asked questions

Is 3RW5227-1TC05 compatible with 24V control systems?

Yes, the control supply is rated at 24 V DC. The soft starter also supports remote reset by turning off the control supply voltage, which is standard for 24 V control loops.

What is the trip class of 3RW5227-1TC05 and can it be adjusted?

The trip class is adjustable among CLASS 10A (default), 10E, and 20E per IEC 60947-4-2. CLASS 10A suits standard motor starts; 10E handles extended acceleration; 20E is for high-inertia loads like large fans or pumps.

MPN
3RW5227-1TC05