The Siemens 3RW5244-2TC04 is a SIRIUS soft starter rated for a minimum operating current of 100 A across a 200-480 V supply. That 100 A floor is the smallest settable Ie — it governs the motor FLA you can protect, not the full-load current the device can handle. The trip class defaults to CLASS 10A per IEC 60947-4-2, with selectable 10E and 20E curves, so it matches standard induction-motor starting profiles without nuisance tripping on normal acceleration. Fieldbus support is comprehensive: PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET are all on board. PROFIenergy is available when paired with the PROFINET communication module. This makes the 3RW5244-2TC04 a single-stock-keeping unit for plants running mixed network topologies — no need to swap hardware for different fieldbus segments.
Siemens 3RW5244-2TC04 SIRIUS Soft Starter, 100 A, 200-480 V
MPN3RW5244-2TC04
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Siemens SIRIUS 3RW5244-2TC04 hybrid soft starter, 100 A minimum, 200-480 V, Class 10A/10E/20E, PROFIBUS, Modbus RTU/TCP, EtherNet/IP, PROFINET, screw fixing, 210 x 393 x 203 mm.
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How we verify every order →Specifications
Identification
| Parameter | Value |
|---|---|
| Product designation | Soft starter |
| Product brand name | SIRIUS |
Power & Motor Rating
| Parameter | Value |
|---|---|
| Rated motor power at 400 V (40 °C) | 132 kW |
| Rated motor power at 230 V (40 °C) | 75 kW |
| Rated operational current at 40 °C | 433 A |
| Rated operational current at 50 °C | 381 A |
| Rated operational current at 60 °C | 346 A |
| Rated insulation voltage | 600 V |
| Minimum settable current (% of Ie) | 15 %; Relative to smallest settable Ie |
| Power loss during startup (50 °C) | 3 188 W |
Control & Connection
| Parameter | Value |
|---|---|
| Control supply voltage type | AC/DC |
| Rated voltage at 50 Hz | 24 V |
| Rated voltage at 60 Hz | 24 V |
| Main circuit terminal type | busbar connection |
| Control circuit wire range, solid | 2x (0.25 ... 1.5 mm²) |
| Control circuit wire range, finely stranded (with ferrule) | 2x (0.25 ... 1.5 mm²) |
| Analog output | No |
| Auxiliary contact rated current, AC-15 at 250 V | 3 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
| Parameter | Value |
|---|---|
| Motor overload protection | Yes; Full motor protection (thermistor motor protection and electronic motor overload protection) |
| Thermistor motor protection | Yes; Type A PTC or Klixon / Thermoclick |
| Adjustable current limitation | Yes |
| Inside-delta connection | Yes |
| Intrinsic device protection | Yes |
| Pollution degree | 3, acc. to IEC 60947-4-2 |
Mechanical
| Parameter | Value |
|---|---|
| Height | 393 mm |
| Width | 210 mm |
| Depth | 203 mm |
| Weight | 9.9 kg |
| Mounting position | with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back |
| Fastening method | screw fixing |
| Mounting clearance, top | 100 mm |
| Mounting clearance, bottom | 75 mm |
| Mounting clearance, side | 5 mm |
| Mounting clearance, front | 10 mm |
Environmental
| Parameter | Value |
|---|---|
| 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 altitude | 5 000 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
| Parameter | Value |
|---|---|
| Trip Class | CLASS 10A (default) / 10E / 20E; acc. to IEC 60947-4-2 |
| Number Of Controlled Phases | 3 |
| Utilization category according to IEC 60947-4-2 | AC 53a |
| Product Feature Integrated Bypass Contact System | Yes |
| Start-Up Ramp Time Of Soft Starter | 0 ... 20 s |
Electrical
| Parameter | Value |
|---|---|
| Current Limiting Value [%] Adjustable | 130 ... 700 % |
| Starting Voltage [%] | 30 ... 100 % |
| Stopping Voltage [%] | 50 %; non-adjustable |
Product details
Frequently asked questions
Is the 3RW5244-2TC04 compatible with PROFIBUS and Modbus?
Yes, the 3RW5244-2TC04 supports PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET. PROFIenergy is available when used with the PROFINET communication module.
What is the difference between 3RW5244 and 3RW5245?
The 3RW5244-2TC04 is rated for a minimum operating current of 100 A, while the 3RW5245 family steps up to a higher current class. The exact rating difference depends on the specific variant; for a 3RW5245, check its datasheet for the minimum settable Ie.
MPN
3RW5244-2TC04