It is rated for operating voltages from 20 to 690 V AC and delivers a 100 kA short-circuit current rating (SCCR) at both 240 V and 400 V, dropping to 10 kA at 690 V — meaning it can safely clear faults up to those levels without upstream damage in most industrial panels.
Siemens 3RV2021-1CA15 SIRIUS Motor Protection Circuit Breake
MPN3RV2021-1CA15
Active
Siemens SIRIUS 3RV2021-1CA15 motor protection circuit breaker, Class 10, 20–690 V, 100 kA SCCR at 400 V, 45 mm wide, screw and snap-on DIN rail mount.
Source DocumentedChannel stated on listing & quote
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Series | SIRIUS |
| Product designation | Circuit breaker |
| Frame size | S0 |
| Parameter | Value |
|---|---|
| Rated operational current (Ie) | 2.5 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) | 7.25 W |
| Power loss, per pole (AC, hot) | 2.4 W |
| Parameter | Value |
|---|---|
| Overload release setting range | 1.8 ... 2.5 A |
| Instantaneous short-circuit trip current | 33 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) | 10 kA |
| Breaking capacity at 240 V | 100 kA |
| Breaking capacity at 690 V | 10 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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Conductor cross-section, finely stranded with ferrule | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Conductor range, AWG (main contacts) | 2x (16 ... 12), 2x (14 ... 8) |
| 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 |
Product details
Frequently asked questions
Where can I buy 3RV2021-1CA15 and how do I get a price?
This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.
Will 3RV2021-1CA15 drop into a panel that was specified around 3RV2021-1FA15 without rewiring?
Yes — the 45 mm width and 97 mm depth are identical to the 3RV2021-1FA15, and both use the same screw and snap-on DIN rail mount, so no rewiring or panel modification is needed.
What is 3RV2021-1CA15's listed depth?
97 mm.
What is 3RV2021-1CA15's listed width?
45 mm.
MPN
3RV2021-1CA15