Siemens SIRIUS motor protection circuit breaker, 3RV2021-1DA10-ZW97, Class 10, 100 kA SCCR at 400 V, screw and snap-on DIN rail mounting, phase failure detection.
| Parameter | Value |
|---|---|
| Series | SIRIUS |
| Product designation | Circuit breaker |
| Frame size | S0 |
| Parameter | Value |
|---|---|
| Rated operational current (Ie) | 3.2 A |
| Rated voltage | 20 ... 690 V |
| Rated voltage, AC-3 (max.) | 690 V |
| Rated frequency | 50 ... 60 Hz |
| Rated insulation voltage (Ui), pollution degree 3 | 690 V |
| Rated impulse withstand voltage (Uimp) | 6 kV |
| Number of poles | 3 |
| Power loss (AC, hot) | 7.25 W |
| Power loss, per pole (AC, hot) | 2.4 W |
| Parameter | Value |
|---|---|
| Overload release setting range | 2.2 ... 3.2 A |
| Instantaneous short-circuit trip current | 42 A |
| Trip class | CLASS 10 |
| Breaking capacity at 240 V (AC) | 100 kA |
| Breaking capacity at 400 V (AC) | 100 kA |
| Breaking capacity at 500 V (AC) | 100 kA |
| Breaking capacity at 690 V (AC) | 10 kA |
| Breaking capacity at 240 V | 100 kA |
| Breaking capacity at 690 V | 10 kA |
| Short-circuit trip type | magnetic |
| Overload release type | thermal |
| Short-circuit protection | Yes |
| Phase-failure detection | Yes |
| Ground-fault detection | No |
| Auxiliary switch extendable | Yes |
| Parameter | Value |
|---|---|
| Endurance, main contacts (typ.) | 100 000 |
| Endurance, auxiliary contacts (typ.) | 100 000 |
| Switching frequency, AC-3 (max.) | 15 1/h |
| Auxiliary CO (changeover) contacts | 0 |
| Parameter | Value |
|---|---|
| Main-circuit terminal type | screw-type terminals |
| Main-circuit connector arrangement | Top and bottom |
| Conductor cross-section, solid / stranded | 2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²) |
| Conductor cross-section, finely stranded with ferrule | 2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 mm² |
| Parameter | Value |
|---|---|
| Height | 97 mm |
| Width | 45 mm |
| Depth | 97 mm |
| Mounting method | screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715 |
| Mounting position | any |
| Parameter | Value |
|---|---|
| Operating temperature | -20 ... +60 °C |
| Storage temperature | -50 ... +80 °C |
| Transport temperature | -50 ... +80 °C |
| Relative humidity (operation) | 10 ... 95 % |
| Max. installation altitude | 2 000 m |
| Parameter | Value |
|---|---|
| Design Of The Product | For motor protection |
The Siemens SIRIUS 3RV2021-1DA10-ZW97 is a motor protection circuit breaker designed for Class 10 trip characteristics, meaning it will trip within 10 seconds at 7.2× the thermal setting — the standard for protecting standard induction motors during locked-rotor starts.
Main circuit terminals accept 2× (1–2.5 mm²) or 2× (2.5–10 mm²) solid or stranded copper, terminated with M4 screws.
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
It carries 100 kA at 240 V AC and 400 V AC, and 10 kA at 690 V AC.
Yes, phase failure detection is built in. Ground fault detection is not included.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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