Siemens SIRIUS 3RV2042 size S3 protection device for motor protection, class 20, without auxiliary switches. Available for rated currents 40–100 A with adjustable thermal overload release and fixed instantaneous (short-circuit) release.
Technical data
| Series | 3RV2042 |
|---|---|
| Size | S3 |
| Application | Motor protection |
| Trip class | 20 |
| Auxiliary switch | none |
| Rated current range | 40–100 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 |
|---|---|---|---|---|---|---|
| 40 | 18.5 | 28–40 | 520 | 100 | increased switching capacity | 3RV2042-4FB10 |
| 50 | 22 | 36–50 | 650 | 100 | increased switching capacity | 3RV2042-4HB10 |
| 63 | 30 | 45–63 | 819 | 100 | increased switching capacity | 3RV2042-4JB10 |
| 75 | 37 | 57–75 | 975 | 100 | increased switching capacity | 3RV2042-4KB10 |
| 84 | 45 | 65–84 | 1170 | 100 | increased switching capacity | 3RV2042-4RB10 |
| 93 | 45 | 75–93 | 1300 | 100 | increased switching capacity | 3RV2042-4YB10 |
| 100 | 45, 55 | 80–100 | 1300 | 100 | increased switching capacity | 3RV2042-4MB10 |
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: 3RV2042, siemens motor starter protector, 3RV2, circuit breaker, motor protection, 3RV2042-4FB10, 3RV2042-4HB10, 3RV2042-4JB10, 3RV2042-4KB10, 3RV2042-4RB10, 3RV2042-4YB10, 3RV2042-4MB10