Siemens SIRIUS motor protection circuit breaker, 3RV2021-1KA10-ZW96, CLASS 10 trip, 100 kA breaking capacity at 400 V AC, screw terminals, DIN rail mount.
| Parameter | Value |
|---|---|
| Series | SIRIUS |
| Product designation | Circuit breaker |
| Frame size | S0 |
| Parameter | Value |
|---|---|
| Rated operational current (Ie) | 12.5 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 | 9 ... 12.5 A |
| Instantaneous short-circuit trip current | 163 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 | screw-type terminals |
| Main-circuit connector arrangement | Top and bottom |
| Conductor cross-section, solid / stranded | 2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²) |
| Conductor cross-section, finely stranded with ferrule | 2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 mm² |
| Parameter | Value |
|---|---|
| Height | 97 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 |
Clearance requirements: 50 mm above and below, 30 mm to the side, zero forward or backward. Any mounting position is permitted.
Main circuit terminals are M4 screw-type, accepting 2x (1 to 2.5 mm²) or 2x (2.5 to 10 mm²) solid or stranded copper. The dual-wire capacity is useful for daisy-chaining power through the breaker to a downstream contactor without an extra terminal block.
The 3RV2021-1KA10-ZW96 is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for availability and current pricing.
The 3RV2021-1KA10-ZW96 is rated for 100 kA breaking capacity at 400 V AC. This means it can safely interrupt a fault current up to 100,000 A at that voltage level without upstream protection needing to operate.
Yes, the 3RV2021-1KA10-ZW96 includes phase failure detection. It will trip if one phase is lost, preventing single-phasing damage to the motor.
The 3RV2021-1KA10-ZW96 is a CLASS 10 trip device. It will trip within 10 seconds at 7.2 times the rated current, which is the standard protection for standard induction motors during a locked-rotor condition.
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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