Siemens SIRIUS 3RV1021-0CA15-ZW98 motor protection circuit breaker, 0.25 A rated continuous current, Class 10 trip, 100 kA breaking capacity at 400 V AC, screw terminals, IP20 front, DIN rail mount.
| Parameter | Value |
|---|---|
| Series | SIRIUS |
| Product designation | circuit breaker |
| Parameter | Value |
|---|---|
| Rated voltage | 690 V |
| Rated voltage, AC-3 (max.) | 690 V |
| Rated impulse withstand voltage (Uimp) | 6 000 V |
| Number of poles | 3 |
| Power loss (AC, hot) | 5.5 W |
| Power loss, per pole (AC, hot) | 1.8 W |
| Parameter | Value |
|---|---|
| Overload release setting range | 0.18 ... 0.25 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) | 100 kA |
| Phase-failure detection | Yes |
| Ground-fault detection | No |
| Auxiliary switch extendable | Yes |
| Parameter | Value |
|---|---|
| Auxiliary CO (changeover) contacts | 0 |
| Parameter | Value |
|---|---|
| Main-circuit terminal type | screw-type terminals |
| Main-circuit connector arrangement | front side |
| Conductor cross-section, finely stranded with ferrule | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Conductor range, AWG (main contacts) | 2x (14 ... 10) |
| Parameter | Value |
|---|---|
| Height | 97 mm |
| Width | 45 mm |
| Depth | 96 mm |
| Mounting method | screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022 |
| Mounting position | any |
| Parameter | Value |
|---|---|
| Operating temperature | -20 ... +60 °C |
| Storage temperature | -50 ... +80 °C |
| Transport temperature | -50 ... +80 °C |
| Max. installation altitude | 2 000 m |
| Parameter | Value |
|---|---|
| Design Of The Product | for motor protection |
It carries a continuous rated current of 0.25 A and a Trip Class 10 characteristic.
The 45 mm width means it takes a single modular slot on the rail — that's another SKU that fits a standard panel footprint. IP20 on the front keeps fingers out; fine for an enclosed panel, not for a washdown zone. Screw-type terminals on both main and auxiliary circuits; solid wire range is 2×(0.5…1.5 mm²) and 2×(0.75…2.5 mm²), stranded goes up to 2×(2.5…6 mm²). Any mounting position works.
Yes, phase failure detection is built in. It will trip the breaker if one phase is lost, protecting the motor from single-phasing.
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