Skip to main content
Log in
Siemens 3RW5227-1TC04 — Soft Starters

Siemens 3RW5227-1TC04 SIRIUS Soft Starter, 40.5 A, 200-480 V

MPN3RW5227-1TC04
Active

Siemens SIRIUS 3RW5227-1TC04 soft starter, 40.5 A minimum, 200-480 V, trip class 10A/10E/20E, PROFIBUS, Modbus RTU/TCP, EtherNet/IP, PROFINET, screw fixing, 306x185x203 mm.

$1,052.83Ref. price · indicative, final on quote
Siemens 3RW5227-1TC04 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RW5227-1TC04 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS
3RW5227-1TC04 — 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
3RW5227-1TC04 — 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 %
3RW5227-1TC04 — 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
3RW5227-1TC04 — 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
3RW5227-1TC04 — 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)
3RW5227-1TC04 — 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
3RW5227-1TC04 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

40.5 A minimum — what that means for motor sizing

The 3RW5227-1TC04 is a SIRIUS soft starter with a minimum settable current of 40.5 A. That floor governs the smallest motor it can protect — anything below that and the trip curve won't engage properly. The rated voltage range is 200 to 480 V, covering common low-voltage three-phase supplies across North America and Europe. Trip class is configurable: CLASS 10A by default, with 10E and 20E selectable per IEC 60947-4-2.

Fieldbus options — PROFIBUS, Modbus, EtherNet/IP, PROFINET

This soft starter ships with onboard PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET — no separate communication module needed for most networks. PROFIenergy is supported in conjunction with the PROFINET standard communication module. The control supply is 24 V DC. Remote reset is possible by cycling the control supply voltage. Firmware updates are supported, and an error logbook is available with special accessories.

Mounting and clearances — screw-fix, 306×185×203 mm

Fastening method is screw fixing. Dimensions: height 306 mm, width 185 mm, depth 203 mm. Mounting position allows vertical surface with ±90° rotation and ±22.5° tilt front/back. Clearance requirements: 100 mm upwards, 10 mm forwards, 0 mm backwards, 75 mm downwards, 5 mm at the sides. These are the minimum air gaps for heat dissipation and arc flash — don't crowd it in a tight panel.

Lifecycle and compliance — active, UL/CSA/CE

Shock resistance is 15 g / 11 ms, dropping to 12 g / 11 ms with potential contact lifting. Service factor is 1.

Frequently asked questions

What is the minimum current setting for 3RW5227-1TC04?

The minimum settable current is 40.5 A. This sets the floor for the motor FLA it can protect — anything smaller requires a different soft starter.

What fieldbus protocols does 3RW5227-1TC04 support?

It supports PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET onboard. No separate communication module needed for most networks.

What are the mounting clearances for 3RW5227-1TC04?

Minimum clearances: 100 mm above, 10 mm in front, 0 mm behind, 75 mm below, 5 mm at the sides. Screw fixing is the mounting method.

MPN
3RW5227-1TC04