Siemens SIRIUS 3RV2321 size S0 protection device for starter combinations (with contactor and separate overload relay), for starter combinations (short-circuit protection only). Available for rated currents 1.6–40 A for short-circuit protection in starter combinations.
Technical data
| Series | 3RV2321 |
|---|---|
| Size | S0 |
| Application | Starter combinations (with contactor and separate overload relay) |
| Trip class | – |
| Auxiliary switch | none |
| Rated current range | 1.6–40 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) | Thermal release (A) | Instantaneous release (A) | Icu 400 V (kA) | Version | Screw | Spring-loaded |
|---|---|---|---|---|---|---|---|
| 1.6 | 0.55 | Without | 21 | 100 | – | 3RV2321-1AC10 | 3RV2321-1AC20 |
| 2 | 0.75 | Without | 26 | 100 | – | 3RV2321-1BC10 | 3RV2321-1BC20 |
| 2.5 | 0.75 | Without | 33 | 100 | – | 3RV2321-1CC10 | 3RV2321-1CC20 |
| 3.2 | 1.1 | Without | 42 | 100 | – | 3RV2321-1DC10 | 3RV2321-1DC20 |
| 4 | 1.5 | Without | 52 | 100 | – | 3RV2321-1EC10 | 3RV2321-1EC20 |
| 5 | 1.5 | Without | 65 | 100 | – | 3RV2321-1FC10 | 3RV2321-1FC20 |
| 6.3 | 2.2 | Without | 82 | 100 | – | 3RV2321-1GC10 | 3RV2321-1GC20 |
| 8 | 3 | Without | 104 | 100 | – | 3RV2321-1HC10 | 3RV2321-1HC20 |
| 10 | 4 | Without | 130 | 100 | – | 3RV2321-1JC10 | 3RV2321-1JC20 |
| 12.5 | 5.5 | Without | 163 | 100 | – | 3RV2321-1KC10 | 3RV2321-1KC20 |
| 16 | 7.5 | Without | 208 | 55 | – | 3RV2321-4AC10 | 3RV2321-4AC20 |
| 20 | 7.5 | Without | 260 | 55 | – | 3RV2321-4BC10 | 3RV2321-4BC20 |
| 22 | 11 | Without | 286 | 55 | – | 3RV2321-4CC10 | 3RV2321-4CC20 |
| 25 | 11 | Without | 325 | 55 | – | 3RV2321-4DC10 | 3RV2321-4DC20 |
| 28 | 15 | Without | 364 | 55 | – | 3RV2321-4NC10 | 3RV2321-4NC20 |
| 32 | 15 | Without | 400 | 55 | – | 3RV2321-4EC10 | 3RV2321-4EC20 |
| 36 | 18.5 | Without | 432 | 20 | – | 3RV2321-4PC10 | – |
| 40 | 18.5 | Without | 480 | 20 | – | 3RV2321-4FC10 | – |
| 16 | 7.5 | Without | 208 | 55 | special conditions down to −50 °C | – | 3RV2321-4AC20-0BA0 |
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.
Tags: 3RV2321, siemens motor starter protector, 3RV2, circuit breaker, motor protection, 3RV2321-1AC10, 3RV2321-1AC20, 3RV2321-1BC10, 3RV2321-1BC20, 3RV2321-1CC10, 3RV2321-1CC20, 3RV2321-1DC10, 3RV2321-1DC20, 3RV2321-1EC10, 3RV2321-1EC20, 3RV2321-1FC10, 3RV2321-1FC20, 3RV2321-1GC10, 3RV2321-1GC20, 3RV2321-1HC10, 3RV2321-1HC20, 3RV2321-1JC10, 3RV2321-1JC20, 3RV2321-1KC10, 3RV2321-1KC20, 3RV2321-4AC10, 3RV2321-4AC20, 3RV2321-4BC10, 3RV2321-4BC20, 3RV2321-4CC10, 3RV2321-4CC20, 3RV2321-4DC10, 3RV2321-4DC20, 3RV2321-4NC10, 3RV2321-4NC20, 3RV2321-4EC10, 3RV2321-4EC20, 3RV2321-4PC10, 3RV2321-4FC10, 3RV2321-4AC20-0BA0