Siemens SIRIUS 3RV2021-1JA20 motor protection circuit breaker, Class 10 trip, 100 kA breaking capacity at 400 V AC, spring-loaded terminals, 45 mm width.
| Parameter | Value |
|---|---|
| Series | SIRIUS |
| Product designation | Circuit breaker |
| Frame size | S0 |
| Parameter | Value |
|---|---|
| Rated operational current (Ie) | 10 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) | 9.25 W |
| Power loss, per pole (AC, hot) | 3.1 W |
| Parameter | Value |
|---|---|
| Overload release setting range | 7 ... 10 A |
| Instantaneous short-circuit trip current | 130 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) | 42 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 | 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 | 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) |
| Conductor range, AWG (main contacts) | 2x (18 ... 8) |
| 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 motor protection |
Mounting position is any. Clearance requirements: 50 mm upwards, 50 mm downwards, 30 mm at the side, zero forwards or backwards. These spacings matter for heat dissipation and arc flash containment in a panel. Rated operational voltage spans 20 to 690 V. Maximum switching frequency under AC-3 duty is 15 operations per hour — sufficient for motor starting cycles on pumps, fans, and conveyors, but not for high-cycling applications like rapid reversing.
100 kA at 400 V AC. At 500 V AC it is 42 kA; at 690 V AC it is 4 kA. These ratings cover most industrial motor branch circuits.
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
Both are SIRIUS motor protection breakers with the same 45 mm width and DIN rail mounting, so the physical footprint is identical. The key difference is the 3RV2021-1JA20 carries a higher 100 kA breaking capacity at 400 V versus the 1FA15's lower rating — verify the SCCR requirement of your panel before swapping.
No related articles