3RV1121-1BA10
Siemens 3RV1121-1BA10
MPN3RV1121-1BA10
Circuit breaker size S0 for motor protection CLASS 10 with overload relay function A-release 1.4...2 A Short-circuit release 26 A Screw terminal Standard switching capacity!!! Phased-out product!!! Successor is SIRIUS 3RV2 Preferred successor type is >>3RV2111-1BA10<<
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jun 2026
Specifications
Identification
| Parameter | Value |
|---|---|
| Series | SIRIUS |
| Product designation | circuit breaker |
Electrical
| Parameter | Value |
|---|---|
| Rated impulse withstand voltage (Uimp) | 6 000 V |
| Number of poles | 3 |
| Power loss (AC, hot) | 7.25 W |
| Power loss, per pole (AC, hot) | 2.4 W |
Protection & Tripping
| Parameter | Value |
|---|---|
| Overload release setting range | 1.4 ... 2 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) | 8 kA |
| Phase-failure detection | Yes |
| Ground-fault detection | No |
| Auxiliary switch extendable | Yes |
Endurance & Switching
| Parameter | Value |
|---|---|
| Auxiliary CO (changeover) contacts | 0 |
Connections
| Parameter | Value |
|---|---|
| Main-circuit terminal type | screw-type terminals |
| Main-circuit connector arrangement | front side |
| Conductor cross-section, finely stranded with ferrule | 2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²) |
| Conductor range, AWG (main contacts) | 2x (14 ... 10) |
Mechanical
| 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 |
Environmental
| Parameter | Value |
|---|---|
| Max. installation altitude | 2 000 m |
Specifications
| Parameter | Value |
|---|---|
| Design Of The Product | For motor protection with relay overload functionality |
MPN
3RV1121-1BA10