Siemens SIRIUS 3RW50 soft starters (Basic Performance), S12: normal starting (Class 10E), high current range, integrated motor protection and bypass. Reduces starting current and mechanical stress of three-phase induction motors; up to 315 kW at 400 V.
Technical data
| Series | 3RW50 (Basic Performance) |
|---|---|
| Size | S12 |
| Rated current Ie (40 °C) | 210–570 A |
| Motor rating (400 V) | up to 315 kW |
| Line voltage | 200–480 V, 200–600 V |
| Control supply voltage | 110–250 V AC, 24 V AC/DC |
| Circuit | Standard (inline) circuit |
| Standard | IEC 60947-4-2 |
Article numbers
| Ie 40 °C (A) | 230 V (kW) | 400 V (kW) | 500 V (kW) | Ie 50 °C (A) | Version | Screw terminals | Spring-loaded terminals |
|---|---|---|---|---|---|---|---|
| 210 | 55 | 110 | – | 186 | Line 200–480 V, control 24 V AC/DC, Analog output | 3RW5072-6AB04 | 3RW5072-2AB04 |
| 250 | 75 | 132 | – | 220 | Line 200–480 V, control 24 V AC/DC, Analog output | 3RW5073-6AB04 | 3RW5073-2AB04 |
| 315 | 90 | 160 | – | 279 | Line 200–480 V, control 24 V AC/DC, Analog output | 3RW5074-6AB04 | 3RW5074-2AB04 |
| 370 | 110 | 200 | – | 328 | Line 200–480 V, control 24 V AC/DC, Analog output | 3RW5075-6AB04 | 3RW5075-2AB04 |
| 470 | 132 | 250 | – | 416 | Line 200–480 V, control 24 V AC/DC, Analog output | 3RW5076-6AB04 | 3RW5076-2AB04 |
| 570 | 160 | 315 | – | 504 | Line 200–480 V, control 24 V AC/DC, Analog output | 3RW5077-6AB04 | 3RW5077-2AB04 |
| 210 | 55 | 110 | – | 186 | Line 200–480 V, control 110–250 V AC, Analog output | 3RW5072-6AB14 | 3RW5072-2AB14 |
| 250 | 75 | 132 | – | 220 | Line 200–480 V, control 110–250 V AC, Analog output | 3RW5073-6AB14 | 3RW5073-2AB14 |
| 315 | 90 | 160 | – | 279 | Line 200–480 V, control 110–250 V AC, Analog output | 3RW5074-6AB14 | 3RW5074-2AB14 |
| 370 | 110 | 200 | – | 328 | Line 200–480 V, control 110–250 V AC, Analog output | 3RW5075-6AB14 | 3RW5075-2AB14 |
| 470 | 132 | 250 | – | 416 | Line 200–480 V, control 110–250 V AC, Analog output | 3RW5076-6AB14 | 3RW5076-2AB14 |
| 570 | 160 | 315 | – | 504 | Line 200–480 V, control 110–250 V AC, Analog output | 3RW5077-6AB14 | 3RW5077-2AB14 |
| 210 | 55 | 110 | – | 186 | Line 200–480 V, control 24 V AC/DC, Thermistor motor protection | 3RW5072-6TB04 | 3RW5072-2TB04 |
| 250 | 75 | 132 | – | 220 | Line 200–480 V, control 24 V AC/DC, Thermistor motor protection | 3RW5073-6TB04 | 3RW5073-2TB04 |
| 315 | 90 | 160 | – | 279 | Line 200–480 V, control 24 V AC/DC, Thermistor motor protection | 3RW5074-6TB04 | 3RW5074-2TB04 |
| 370 | 110 | 200 | – | 328 | Line 200–480 V, control 24 V AC/DC, Thermistor motor protection | 3RW5075-6TB04 | 3RW5075-2TB04 |
| 470 | 132 | 250 | – | 416 | Line 200–480 V, control 24 V AC/DC, Thermistor motor protection | 3RW5076-6TB04 | 3RW5076-2TB04 |
| 570 | 160 | 315 | – | 504 | Line 200–480 V, control 24 V AC/DC, Thermistor motor protection | 3RW5077-6TB04 | 3RW5077-2TB04 |
| 210 | 55 | 110 | – | 186 | Line 200–480 V, control 110–250 V AC, Thermistor motor protection | 3RW5072-6TB14 | 3RW5072-2TB14 |
| 250 | 75 | 132 | – | 220 | Line 200–480 V, control 110–250 V AC, Thermistor motor protection | 3RW5073-6TB14 | 3RW5073-2TB14 |
| 315 | 90 | 160 | – | 279 | Line 200–480 V, control 110–250 V AC, Thermistor motor protection | 3RW5074-6TB14 | 3RW5074-2TB14 |
| 370 | 110 | 200 | – | 328 | Line 200–480 V, control 110–250 V AC, Thermistor motor protection | 3RW5075-6TB14 | 3RW5075-2TB14 |
| 470 | 132 | 250 | – | 416 | Line 200–480 V, control 110–250 V AC, Thermistor motor protection | 3RW5076-6TB14 | 3RW5076-2TB14 |
| 570 | 160 | 315 | – | 504 | Line 200–480 V, control 110–250 V AC, Thermistor motor protection | 3RW5077-6TB14 | 3RW5077-2TB14 |
| 210 | 55 | 110 | 132 | 186 | Line 200–600 V, control 24 V AC/DC, Analog output | 3RW5072-6AB05 | 3RW5072-2AB05 |
| 250 | 75 | 132 | 160 | 220 | Line 200–600 V, control 24 V AC/DC, Analog output | 3RW5073-6AB05 | 3RW5073-2AB05 |
| 315 | 90 | 160 | 200 | 279 | Line 200–600 V, control 24 V AC/DC, Analog output | 3RW5074-6AB05 | 3RW5074-2AB05 |
| 370 | 110 | 200 | 250 | 328 | Line 200–600 V, control 24 V AC/DC, Analog output | 3RW5075-6AB05 | 3RW5075-2AB05 |
| 470 | 132 | 250 | 315 | 416 | Line 200–600 V, control 24 V AC/DC, Analog output | 3RW5076-6AB05 | 3RW5076-2AB05 |
| 570 | 160 | 315 | 355 | 504 | Line 200–600 V, control 24 V AC/DC, Analog output | 3RW5077-6AB05 | 3RW5077-2AB05 |
| 210 | 55 | 110 | 132 | 186 | Line 200–600 V, control 110–250 V AC, Analog output | 3RW5072-6AB15 | 3RW5072-2AB15 |
| 250 | 75 | 132 | 160 | 220 | Line 200–600 V, control 110–250 V AC, Analog output | 3RW5073-6AB15 | 3RW5073-2AB15 |
| 315 | 90 | 160 | 200 | 279 | Line 200–600 V, control 110–250 V AC, Analog output | 3RW5074-6AB15 | 3RW5074-2AB15 |
| 370 | 110 | 200 | 250 | 328 | Line 200–600 V, control 110–250 V AC, Analog output | 3RW5075-6AB15 | 3RW5075-2AB15 |
| 470 | 132 | 250 | 315 | 416 | Line 200–600 V, control 110–250 V AC, Analog output | 3RW5076-6AB15 | 3RW5076-2AB15 |
| 570 | 160 | 315 | 355 | 504 | Line 200–600 V, control 110–250 V AC, Analog output | 3RW5077-6AB15 | 3RW5077-2AB15 |
| 210 | 55 | 110 | 132 | 186 | Line 200–600 V, control 24 V AC/DC, Thermistor motor protection | 3RW5072-6TB05 | 3RW5072-2TB05 |
| 250 | 75 | 132 | 160 | 220 | Line 200–600 V, control 24 V AC/DC, Thermistor motor protection | 3RW5073-6TB05 | 3RW5073-2TB05 |
| 315 | 90 | 160 | 200 | 279 | Line 200–600 V, control 24 V AC/DC, Thermistor motor protection | 3RW5074-6TB05 | 3RW5074-2TB05 |
| 370 | 110 | 200 | 250 | 328 | Line 200–600 V, control 24 V AC/DC, Thermistor motor protection | 3RW5075-6TB05 | 3RW5075-2TB05 |
| 470 | 132 | 250 | 315 | 416 | Line 200–600 V, control 24 V AC/DC, Thermistor motor protection | 3RW5076-6TB05 | 3RW5076-2TB05 |
| 570 | 160 | 315 | 355 | 504 | Line 200–600 V, control 24 V AC/DC, Thermistor motor protection | 3RW5077-6TB05 | 3RW5077-2TB05 |
| 210 | 55 | 110 | 132 | 186 | Line 200–600 V, control 110–250 V AC, Thermistor motor protection | 3RW5072-6TB15 | 3RW5072-2TB15 |
| 250 | 75 | 132 | 160 | 220 | Line 200–600 V, control 110–250 V AC, Thermistor motor protection | 3RW5073-6TB15 | 3RW5073-2TB15 |
| 315 | 90 | 160 | 200 | 279 | Line 200–600 V, control 110–250 V AC, Thermistor motor protection | 3RW5074-6TB15 | 3RW5074-2TB15 |
| 370 | 110 | 200 | 250 | 328 | Line 200–600 V, control 110–250 V AC, Thermistor motor protection | 3RW5075-6TB15 | 3RW5075-2TB15 |
| 470 | 132 | 250 | 315 | 416 | Line 200–600 V, control 110–250 V AC, Thermistor motor protection | 3RW5076-6TB15 | 3RW5076-2TB15 |
| 570 | 160 | 315 | 355 | 504 | Line 200–600 V, control 110–250 V AC, Thermistor motor protection | 3RW5077-6TB15 | 3RW5077-2TB15 |
Motor ratings refer to standard 4-pole motors and normal starting conditions; for heavy starting select the next larger size. On larger sizes spring-loaded terminals apply to the control circuit only, main conductors are connected via busbars. Contact us for selection support.
Technical data and article numbers are based on Siemens catalog IC 10 · 2026 (chapter 6, soft starters) and are for information only. Image is representative.
For price, stock and lead time, use the Request a Quote button or call +90 533 945 27 94. Sending the article number is enough.
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