Siemens SIRIUS 3RV2031 size S2 protection device for motor protection, class 20, without auxiliary switches. Available for rated currents 14–65 A with adjustable thermal overload release and fixed instantaneous (short-circuit) release.
Technical data
| Series | 3RV2031 |
|---|---|
| Size | S2 |
| Application | Motor protection |
| Trip class | 20 |
| Auxiliary switch | none |
| Rated current range | 14–65 A |
| Mounting | Screw or snap-on mounting on TH35 DIN rail |
| Connection | Screw terminals |
| Standard | IEC 60947-2, IEC 60947-4-1 |
Article numbers
| In (A) | Motor rating (kW, 400 V) | Setting range (A) | Instantaneous release (A) | Icu 400 V (kA) | Version | Screw |
|---|---|---|---|---|---|---|
| 14 | 5.5 | 9.5–14 | 208 | 65 | – | 3RV2031-4SB10 |
| 17 | 7.5 | 12–17 | 260 | 65 | – | 3RV2031-4TB10 |
| 20 | 7.5 | 14–20 | 260 | 65 | – | 3RV2031-4BB10 |
| 25 | 11 | 18–25 | 325 | 65 | – | 3RV2031-4DB10 |
| 32 | 15 | 22–32 | 416 | 65 | – | 3RV2031-4EB10 |
| 36 | 18.5 | 28–36 | 520 | 65 | – | 3RV2031-4PB10 |
| 40 | 18.5 | 32–40 | 585 | 65 | – | 3RV2031-4UB10 |
| 45 | 22 | 35–45 | 650 | 65 | – | 3RV2031-4VB10 |
| 52 | 22 | 42–52 | 741 | 65 | – | 3RV2031-4WB10 |
| 59 | 30 | 49–59 | 845 | 65 | – | 3RV2031-4XB10 |
| 65 | 30 | 54–65 | 845 | 65 | – | 3RV2031-4JB10 |
| 32 | 15 | 22–32 | 416 | 65 | special conditions down to −50 °C | 3RV2031-4EB10-0BA0 |
| 36 | 18.5 | 28–36 | 520 | 65 | special conditions down to −50 °C | 3RV2031-4PB10-0BA0 |
| 40 | 18.5 | 32–40 | 585 | 65 | special conditions down to −50 °C | 3RV2031-4UB10-0BA0 |
Motor ratings are guide values for 4-pole standard motors at 50 Hz 400 V AC; the actual starting and rated data of the motor must be considered. Versions for special conditions down to −50 °C have limited mechanical endurance and no UL/CSA, ATEX or IECEx approval (catalog footnote). Auxiliary switches and other accessories are ordered separately.
Technical data and article numbers are based on Siemens catalog IC 10 · 2026 (chapter 7, protection equipment) and are for information only. Image is representative.
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Tags: 3RV2031, siemens motor starter protector, 3RV2, circuit breaker, motor protection, 3RV2031-4SB10, 3RV2031-4TB10, 3RV2031-4BB10, 3RV2031-4DB10, 3RV2031-4EB10, 3RV2031-4PB10, 3RV2031-4UB10, 3RV2031-4VB10, 3RV2031-4WB10, 3RV2031-4XB10, 3RV2031-4JB10, 3RV2031-4EB10-0BA0, 3RV2031-4PB10-0BA0, 3RV2031-4UB10-0BA0