Siemens SIRIUS motor protection circuit breaker, 3RV1021-1KA15-ZX95, 12.5 A continuous, CLASS 10 trip, 100 kA breaking at 400 V AC, screw terminals, snap-on 35 mm DIN rail.
| 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) | 9.25 W |
| Power loss, per pole (AC, hot) | 3.1 W |
| Parameter | Value |
|---|---|
| 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 |
| Phase-failure detection | Yes |
| Ground-fault detection | No |
| Parameter | Value |
|---|---|
| Endurance, main contacts (typ.) | 100 000 |
| Switching frequency, AC-3 (max.) | 15 1/h |
| 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 | 97 mm |
| Width | 45 mm |
| Depth | 96 mm |
| Mounting position | any |
| Parameter | Value |
|---|---|
| Operating temperature | -20 ... +60 °C |
| Storage temperature | -50 ... +80 °C |
| Transport temperature | -50 ... +80 °C |
| Parameter | Value |
|---|---|
| Design Of The Product | for motor protection |
The Siemens SIRIUS 3RV1021-1KA15-ZX95 is a motor protection circuit breaker rated for 12.5 A continuous current and 5.5 kW motor load at 400 V.
Width is 45 mm, height 97 mm, depth 96 mm. Screw terminals on the main circuit; solid wire accepts 2× (0.5…1.5 mm²) and 2× (0.75…2.5 mm²), stranded takes 2× (1…2.5 mm²) and 2× (2.5…6 mm²). Mounting position any, so vertical or horizontal rail works.
This part is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time.
The depth is 96 mm. That dimension governs enclosure clearance behind the DIN rail.
Solid wire: 2× (0.5…1.5 mm²) and 2× (0.75…2.5 mm²). Stranded: 2× (1…2.5 mm²) and 2× (2.5…6 mm²). Terminals are screw-type.
As a SIRIUS motor protection circuit breaker, this part typically carries CE, UL, CSA, and CCC approvals per Siemens standard practice. RoHS and REACH declarations are available from Siemens documentation. Specific cert numbers should be confirmed against the nameplate at receipt.
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.
No related articles