Siemens SIRIUS 3RV2021 size S0 protection device for motor protection, class 10, without auxiliary switches. Available for rated currents 0.16–40 A with adjustable thermal overload release and fixed instantaneous (short-circuit) release.
Technical data
| Series | 3RV2021 |
|---|---|
| Size | S0 |
| Application | Motor protection |
| Trip class | 10 |
| Auxiliary switch | none |
| Rated current range | 0.16–40 A |
| Mounting | Screw or snap-on mounting on TH35 DIN rail |
| Connection | Screw or spring-loaded 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 | Spring-loaded |
|---|---|---|---|---|---|---|---|
| 0.16 | 0.04 | 0.11–0.16 | 2.1 | 100 | – | 3RV2021-0AA10 | – |
| 0.2 | 0.06 | 0.14–0.2 | 2.6 | 100 | – | 3RV2021-0BA10 | – |
| 0.25 | 0.06 | 0.18–0.25 | 3.3 | 100 | – | 3RV2021-0CA10 | – |
| 0.32 | 0.09 | 0.22–0.32 | 4.2 | 100 | – | 3RV2021-0DA10 | – |
| 0.4 | 0.09 | 0.28–0.4 | 5.2 | 100 | – | 3RV2021-0EA10 | – |
| 0.5 | 0.12 | 0.35–0.5 | 6.5 | 100 | – | 3RV2021-0FA10 | – |
| 0.63 | 0.18 | 0.45–0.63 | 8.2 | 100 | – | 3RV2021-0GA10 | 3RV2021-0GA20 |
| 0.8 | 0.18 | 0.55–0.8 | 10 | 100 | – | 3RV2021-0HA10 | 3RV2021-0HA20 |
| 1 | 0.25 | 0.7–1 | 13 | 100 | – | 3RV2021-0JA10 | 3RV2021-0JA20 |
| 1.25 | 0.37 | 0.9–1.25 | 16 | 100 | – | 3RV2021-0KA10 | 3RV2021-0KA20 |
| 1.6 | 0.55 | 1.1–1.6 | 21 | 100 | – | 3RV2021-1AA10 | 3RV2021-1AA20 |
| 2 | 0.75 | 1.4–2 | 26 | 100 | – | 3RV2021-1BA10 | 3RV2021-1BA20 |
| 2.5 | 0.75 | 1.8–2.5 | 33 | 100 | – | 3RV2021-1CA10 | 3RV2021-1CA20 |
| 3.2 | 1.1 | 2.2–3.2 | 42 | 100 | – | 3RV2021-1DA10 | 3RV2021-1DA20 |
| 4 | 1.5 | 2.8–4 | 52 | 100 | – | 3RV2021-1EA10 | 3RV2021-1EA20 |
| 5 | 1.5 | 3.5–5 | 65 | 100 | – | 3RV2021-1FA10 | 3RV2021-1FA20 |
| 6.3 | 2.2 | 4.5–6.3 | 82 | 100 | – | 3RV2021-1GA10 | 3RV2021-1GA20 |
| 8 | 3 | 5.5–8 | 104 | 100 | – | 3RV2021-1HA10 | 3RV2021-1HA20 |
| 10 | 4 | 7–10 | 130 | 100 | – | 3RV2021-1JA10 | 3RV2021-1JA20 |
| 12.5 | 5.5 | 9–12.5 | 163 | 100 | – | 3RV2021-1KA10 | 3RV2021-1KA20 |
| 16 | 7.5 | 10–16 | 208 | 55 | – | 3RV2021-4AA10 | 3RV2021-4AA20 |
| 20 | 7.5 | 13–20 | 260 | 55 | – | 3RV2021-4BA10 | 3RV2021-4BA20 |
| 22 | 11 | 16–22 | 286 | 55 | – | 3RV2021-4CA10 | 3RV2021-4CA20 |
| 25 | 11 | 18–25 | 325 | 55 | – | 3RV2021-4DA10 | 3RV2021-4DA20 |
| 28 | 15 | 23–28 | 364 | 55 | – | 3RV2021-4NA10 | 3RV2021-4NA20 |
| 32 | 15 | 27–32 | 400 | 55 | – | 3RV2021-4EA10 | 3RV2021-4EA20 |
| 36 | 18.5 | 30–36 | 432 | 20 | – | 3RV2021-4PA10 | – |
| 40 | 18.5 | 34–40 | 480 | 20 | – | 3RV2021-4FA10 | – |
| 1 | 0.25 | 0.7–1 | 13 | 100 | special conditions down to −50 °C | – | 3RV2021-0JA20-0BA0 |
| 1.6 | 0.55 | 1.1–1.6 | 21 | 100 | special conditions down to −50 °C | – | 3RV2021-1AA20-0BA0 |
| 2 | 0.75 | 1.4–2 | 26 | 100 | special conditions down to −50 °C | – | 3RV2021-1BA20-0BA0 |
| 2.5 | 0.75 | 1.8–2.5 | 33 | 100 | special conditions down to −50 °C | – | 3RV2021-1CA20-0BA0 |
| 4 | 1.5 | 2.8–4 | 52 | 100 | special conditions down to −50 °C | – | 3RV2021-1EA20-0BA0 |
| 6.3 | 2.2 | 4.5–6.3 | 82 | 100 | special conditions down to −50 °C | – | 3RV2021-1GA20-0BA0 |
| 8 | 3 | 5.5–8 | 104 | 100 | special conditions down to −50 °C | – | 3RV2021-1HA20-0BA0 |
| 10 | 4 | 7–10 | 130 | 100 | special conditions down to −50 °C | – | 3RV2021-1JA20-0BA0 |
| 12.5 | 5.5 | 9–12.5 | 163 | 100 | special conditions down to −50 °C | – | 3RV2021-1KA20-0BA0 |
| 16 | 7.5 | 10–16 | 208 | 55 | special conditions down to −50 °C | – | 3RV2021-4AA20-0BA0 |
| 20 | 7.5 | 13–20 | 260 | 55 | special conditions down to −50 °C | 3RV2021-4BA10-0BA0 | – |
| 22 | 11 | 16–22 | 286 | 55 | special conditions down to −50 °C | 3RV2021-4CA10-0BA0 | – |
| 25 | 11 | 18–25 | 325 | 55 | special conditions down to −50 °C | 3RV2021-4DA10-0BA0 | 3RV2021-4DA20-0BA0 |
| 28 | 15 | 23–28 | 364 | 55 | special conditions down to −50 °C | – | 3RV2021-4NA20-0BA0 |
| 32 | 15 | 27–32 | 400 | 55 | special conditions down to −50 °C | 3RV2021-4EA10-0BA0 | 3RV2021-4EA20-0BA0 |
| 40 | 18.5 | 34–40 | 480 | 20 | special conditions down to −50 °C | 3RV2021-4FA10-0BA0 | – |
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.
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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