Siemens SIRIUS motor protection circuit breaker 3RV2021-4EA15-0BA0, CLASS 10, 7.5 kW at 230 V, 10 kA breaking capacity at 400 V AC, screw and snap-on mounting for 35 mm DIN rail.
| Parameter | Value |
|---|---|
| Series | SIRIUS |
| Product designation | Circuit breaker |
| Frame size | S0 |
| Parameter | Value |
|---|---|
| Rated operational current (Ie) | 32 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) | 13.25 W |
| Power loss, per pole (AC, hot) | 4.4 W |
| Parameter | Value |
|---|---|
| Overload release setting range | 27 ... 32 A |
| Instantaneous short-circuit trip current | 400 A |
| Trip class | CLASS 10 |
| Breaking capacity at 240 V (AC) | 25 kA |
| Breaking capacity at 400 V (AC) | 25 kA |
| Breaking capacity at 500 V (AC) | 10 kA |
| Breaking capacity at 690 V (AC) | 4 kA |
| Breaking capacity at 240 V | 10 kA |
| Breaking capacity at 690 V | 2 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.) | 500 |
| Endurance, auxiliary contacts (typ.) | 500 |
| 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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Conductor cross-section, finely stranded with ferrule | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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 | -50 ... +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 |
It is rated for 7.5 kW at 230 V and delivers a breaking capacity of 10 kA at 400 V AC, meaning it can safely interrupt fault currents up to that level on a 400 V line without cascading upstream.
The 45 mm width (3 module spaces) fits standard enclosure rail layouts. Terminal connections are screw-type for the main circuit, accepting 2× (0.5 to 1.5 mm²) or 2× (0.75 to 2.5 mm²) solid or stranded wire.
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
The 3RV2021-4NA25 is a peer in the same SIRIUS family. The key difference is the 3RV2021-4EA15-0BA0 uses screw-type terminals for the main circuit, while the 3RV2021-4NA25 uses spring-loaded terminals. Both share the same 45 mm width and CLASS 10 trip characteristic, so a panel designed for one can accept the other without rewiring the bus bars, but terminal preparation differs.
The depth is 97 mm, with a width of 45 mm and height of 97 mm.
Yes — both share the same 45 mm width and mount on 35 mm DIN rail, so the footprint is identical. The only difference is the terminal type: screw-type on this unit versus spring-loaded on the 3RV2021-4NA25. The panel cut-out and bus bar positions are the same.
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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