Siemens SIRIUS 3RV2031-4BB10 motor protection circuit breaker, 20–690 V, Class 20, screw terminals, snap-on DIN rail.
| Parameter | Value |
|---|---|
| Series | SIRIUS |
| Product designation | Circuit breaker |
| Frame size | S2 |
| Parameter | Value |
|---|---|
| Rated operational current (Ie) | 20 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) | 14.5 W |
| Power loss, per pole (AC, hot) | 4.8 W |
| Parameter | Value |
|---|---|
| Overload release setting range | 14 ... 20 A |
| Instantaneous short-circuit trip current | 260 A |
| Trip class | CLASS 20 |
| Breaking capacity at 240 V (AC) | 100 kA |
| Breaking capacity at 400 V (AC) | 65 kA |
| Breaking capacity at 500 V (AC) | 12 kA |
| Breaking capacity at 690 V (AC) | 5 kA |
| Breaking capacity at 240 V | 100 kA |
| Breaking capacity at 690 V | 3 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.) | 50 000 |
| Endurance, auxiliary contacts (typ.) | 50 000 |
| Switching frequency, AC-3 (max.) | 15 1/h |
| Parameter | Value |
|---|---|
| Main-circuit terminal type | screw-type terminals |
| Main-circuit connector arrangement | Top and bottom |
| Conductor cross-section, solid / stranded | 2x (1 ... 25 mm²), 1x (1 ... 35 mm²) |
| Conductor cross-section, finely stranded with ferrule | 2x (1 ... 16 mm²), 1x (1 ... 25 mm²) |
| Conductor range, AWG (main contacts) | 2x (18 ... 3), 1x (18 ... 2) |
| Parameter | Value |
|---|---|
| Height | 140 mm |
| Width | 55 mm |
| Depth | 149 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 |
Breaking capacity varies with voltage: 100 kA at 240 V, 30 kA at 400 V, 6 kA at 500 V, and 3 kA at 690 V. At 480 V and 600 V the interrupting rating is 20 A. Motor horsepower ratings span 1.5 hp at 110/120 V up to 20 hp at 575/600 V, with intermediate ratings at 200–480 V. This covers common North American and IEC motor frame sizes.
Dimensions are 149 mm deep, 55 mm wide, 140 mm high.
Submit an RFQ through the storefront; the part is sourced to order and availability with current pricing is confirmed at quote time.
Depth is 149 mm, width is 55 mm.
As a Siemens SIRIUS product, it carries the usual CE, UL, CSA, and IEC certifications typical for motor protection circuit breakers in this class.
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