Siemens SIRIUS 3RV2021-1EA20-0DA0, S0 frame circuit breaker for system protection, 100 kA interrupting capacity at 400 V AC, Trip Class 10, screw and snap-on 35 mm DIN rail mount.
| Parameter | Value |
|---|---|
| Series | SIRIUS |
| Product designation | Circuit breaker |
| Frame size | S0 |
| Parameter | Value |
|---|---|
| Rated operational current (Ie) | 4 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 | 2.8 ... 4 A |
| Instantaneous short-circuit trip current | 52 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) | 6 kA |
| Breaking capacity at 240 V | 100 kA |
| Breaking capacity at 690 V | 4 kA |
| Short-circuit trip type | magnetic |
| Overload release type | thermal |
| Short-circuit protection | Yes |
| Phase-failure detection | No |
| 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 | spring-loaded terminals |
| Main-circuit connector arrangement | Top and bottom |
| Conductor cross-section, solid / stranded | 2x (1 ... 10 mm²) |
| Conductor cross-section, finely stranded with ferrule | 2x (1 ... 6 mm²) |
| Parameter | Value |
|---|---|
| Height | 119 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 system protection |
It carries a 100 kA short-circuit breaking capacity at 240 V, 400 V, and 500 V AC, dropping to 4 kA at 690 V AC. The 45 mm width and 97 mm depth fit the S0 footprint, and it snaps onto 35 mm DIN rail per DIN EN 60715, so it drops into any standard panel without extra bracketry.
Clearance: 50 mm above and below, 30 mm to the side, zero forward or backward.
This part is sourced to order against an RFQ through independent distribution. Submit a request for quote (RFQ) and we will confirm availability and current pricing at quote time.
The depth is 97 mm, with a width of 45 mm and height of 119 mm. It occupies the S0 frame footprint.
Both are S0-frame SIRIUS breakers on the same 45 mm width and 35 mm DIN-rail mount, so the mechanical fit is identical. The difference is in the interrupting rating and trip characteristics — verify the 3RV2021-1GA25's SCCR and trip class against your fault study before swapping.
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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