Depth is 96 mm, width 45 mm, height 97 mm — fits a standard 45 mm-wide module slot. Screw terminals on both main and auxiliary circuits accept solid conductors from 0.5 mm² up to 2.5 mm² (two per clamp) and stranded up to 6 mm². Mounting position is any, so orientation in a crowded enclosure isn't a constraint.
Siemens 3RV1021-0CA15-ZW97 SIRIUS Motor Protection Breaker,
MPN3RV1021-0CA15-ZW97
Siemens SIRIUS 3RV1021-0CA15-ZW97 motor protection circuit breaker, 0.25 A continuous current, Class 10 trip, 100 kA breaking capacity at 400 V AC, screw terminals, snap-on 35 mm DIN rail.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| 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) | 5.5 W |
| Power loss, per pole (AC, hot) | 1.8 W |
| Parameter | Value |
|---|---|
| Overload release setting range | 0.18 ... 0.25 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) | 100 kA |
| Phase-failure detection | Yes |
| Ground-fault detection | No |
| Auxiliary switch extendable | Yes |
| Parameter | Value |
|---|---|
| Auxiliary CO (changeover) contacts | 0 |
| 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) |
| Conductor range, AWG (main contacts) | 2x (14 ... 10) |
| 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 |
| Parameter | Value |
|---|---|
| Operating temperature | -20 ... +60 °C |
| Storage temperature | -50 ... +80 °C |
| Transport temperature | -50 ... +80 °C |
| Max. installation altitude | 2 000 m |
| Parameter | Value |
|---|---|
| Design Of The Product | for motor protection |
Product details
Frequently asked questions
Where can I buy 3RV1021-0CA15-ZW97 and how do I get a price?
We source this part to order against an RFQ — availability and current pricing are confirmed at quote time. Submit an RFQ through our site for a firm price and lead time.
What is the breaking capacity of 3RV1021-0CA15-ZW97?
The breaking capacity is 100 kA at 240 V, 400 V, 500 V, and 690 V AC, so it handles high fault currents across common industrial supply voltages.
Does 3RV1021-0CA15-ZW97 detect phase failure?
Yes, phase failure detection is built in — the breaker will trip if one phase drops out, protecting the motor from single-phasing.
What compliance documentation does Siemens provide for 3RV1021-0CA15-ZW97?
The part complies with RoHS (effective 01.05.2012). For UL, IEC, and REACH documentation, contact us with your RFQ and we can provide the relevant certificates.
MPN
3RV1021-0CA15-ZW97