Siemens SIRIUS 3RV1011-0KA15-0BA0, motor-protective circuit breaker, 1.25 A continuous rated current, Class 10, 100 kA breaking capacity at 400 V AC, screw terminals, snap-on 35 mm DIN rail.
| Parameter | Value |
|---|---|
| Series | SIRIUS |
| Product designation | circuit breaker |
| Parameter | Value |
|---|---|
| Rated voltage | 20 ... 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 | 0.9 ... 1.25 A |
| Instantaneous short-circuit trip current | 16 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) | 2 kA |
| Short-circuit trip type | magnetic |
| Overload release type | thermal |
| 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) |
| Parameter | Value |
|---|---|
| Height | 90 mm |
| Width | 45 mm |
| Depth | 81 mm |
| Mounting method | screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022 |
| Mounting position | any |
| Parameter | Value |
|---|---|
| Operating temperature | -50 ... +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 1.25 A and a Trip Class 10, meaning it trips within 10 seconds at 7.2× the set current — standard protection for standard-start induction motors driving pumps, fans, or conveyors. The overload release is thermal (bimetal), the short-circuit trip is magnetic.
Rated breaking capacity is 100 kA at 240 V, 400 V, and 500 V AC, dropping to 2 kA at 690 V AC. IP20 on the front; no washdown rating, so keep it inside the enclosure.
100 kA at 400 V AC. The same 100 kA rating holds at 240 V and 500 V; at 690 V it drops to 2 kA.
Yes, phase failure detection is built into the overload release. A lost phase on the supply side will cause the breaker to trip, protecting the motor from single-phasing.
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm response.
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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