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Siemens 3RW5225-3TC04 — Soft Starters

Siemens 3RW5225-3TC04 SIRIUS Soft Starter, 200-480 V

MPN3RW5225-3TC04
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Siemens SIRIUS 3RW5225-3TC04 hybrid soft starter, 200-480 V AC, 25.5 A minimum current, Trip Class 10A/10E/20E, screw fixing, 306x185x203 mm, CE/UL/CSA.

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MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RW5225-3TC04 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS

Power & Motor Rating

3RW5225-3TC04 — Power & Motor Rating
ParameterValue
Rated motor power at 400 V (40 °C)30 kW
Rated motor power at 230 V (40 °C)18.5 kW
Rated operational current at 40 °C109 A
Rated operational current at 50 °C96 A
Rated operational current at 60 °C87.5 A
Rated insulation voltage600 V
Minimum settable current (% of Ie)15 %; Relative to smallest settable Ie
Power loss during startup (50 °C)744 W

Control & Connection

3RW5225-3TC04 — 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, solid2x (0.25 ... 1.5 mm²)
Control circuit wire range, finely stranded (with ferrule)2x (0.25 ... 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 %

Protection & Features

3RW5225-3TC04 — 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

Mechanical

3RW5225-3TC04 — Mechanical
ParameterValue
Height306 mm
Width185 mm
Depth203 mm
Weight5.6 kg
Mounting position+/- 10° rotation possible and can be tilted forward or backward on vertical mounting surface
Fastening methodscrew fixing
Mounting clearance, top100 mm
Mounting clearance, bottom75 mm
Mounting clearance, side5 mm
Mounting clearance, front10 mm

Environmental

3RW5225-3TC04 — 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)

Specifications

3RW5225-3TC04 — 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

Electrical

3RW5225-3TC04 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

Motor voltage and overload protection profile

Rated for 200-480 V AC supply, the 3RW5225-3TC04 covers the common low-voltage motor range across 230 V, 400 V, and 480 V systems — a single part number spans both European and North American line voltages. The minimum operating current of 25.5 A sets the lower bound of the motor FLA it can protect; below this threshold the overload curve cannot be set accurately, so the motor must draw at least 25.5 A at full load. Trip class is configurable as CLASS 10A (default), 10E, or 20E per IEC 60947-4-2 — this determines how long the soft starter allows locked-rotor current before tripping, with 10A being the fastest (10 seconds at 7.2× Ie) and 20E the slowest, matching the thermal capacity of the motor winding.

Fieldbus and control integration

Supports PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET — the soft starter can be dropped into virtually any industrial network topology without a separate gateway. PROFIenergy capability is available when paired with the PROFINET communication module, allowing the drive to participate in coordinated energy-saving shutdowns during production pauses. Remote reset is achieved by cycling the 24 V DC control supply voltage — no physical pushbutton access needed at the panel door.

Clearance and mounting envelope

Dimensions 306 mm height, 185 mm width, 203 mm depth — the unit occupies a standard-size panel footprint and mounts via screw fixing to a vertical surface. Required clearances: 100 mm above, 75 mm below, 10 mm in front, 5 mm at the sides, 0 mm behind — these ensure adequate airflow for the -25 to +60 °C operating range (derating applies above 40 °C). Mounting position allows ±10° rotation and tilt forward or backward on a vertical surface, giving some flexibility in tight enclosures.

Application-specific starting profiles

Soft Torque and Pump Ramp Down are built-in features — Soft Torque reduces mechanical shock on geared loads, while Pump Ramp Down eliminates water hammer by extending the deceleration ramp on pump motors. Auto-reset is supported, meaning the starter can restart automatically after a fault clears, reducing downtime in remote or unmanned installations.

Regulatory approvals and compliance documentation

CE marking covers the European Low Voltage and EMC Directives; UL and CSA approvals cover the North American market — the part carries the marks needed for panel certification in both regions. The pollution degree is 3 per IEC 60947-4-2, meaning the unit is designed for conductive pollution environments (condensation, light dust) typical of industrial control panels without sealed enclosures.

Frequently asked questions

What compliance documentation does Siemens provide for 3RW5225-3TC04?

The unit carries CE marking, UL approval, and CSA approval. These cover the European LV/EMC directives and North American safety standards. Pollution degree 3 per IEC 60947-4-2 is documented.

What is the minimum motor current the 3RW5225-3TC04 can protect?

The minimum settable current is 25.5 A — this is the lower bound of the operating window. Motors with full-load current below this value cannot be accurately protected by this unit.

MPN
3RW5225-3TC04