Siemens 3RV20111AA20 Motor Protection Circuit Breaker
Catalog Comparison
The 3RV20111AA20 belongs to the Siemens SIRIUS 3RV2 S00 series three-pole thermal-magnetic breaker family. Below is a side-by-side parameter screening of the seed against the most closely related catalog entries in this size/amp class.
| Parameter | 3RV20111AA20 (seed) | 3RV20111AA200BA0 | 3RV20111AA25 | 3RV20111AA40 |
|---|---|---|---|---|
| Current Rating (Amps) | 1.6A | 1.6A | 1.6A | 1.6A |
| Breaker Type | Thermal | Thermal Magnetic | Thermal Magnetic | Thermal Magnetic |
| Number of Poles | 3 | 3 | 3 | 3 |
| Actuator Type | Rotary | Rotary | Rotary | Rotary |
| Mounting Type | DIN Rail | DIN Rail | DIN Rail | DIN Rail |
| Illumination | None | None | None | None |
| Approval Agency | ATEX, CCC, CSA, EAC, IECEx, UL | CE, EAC, VDE | ATEX, CCC, CE, CSA, EAC, IECEx, UL, VDE | ATEX, CCC, CE, CSA, EAC, IECEx, UL, VDE |
| Package | Bulk | Box | Box | Box |
| Encapsulation | Bulk | Box | Box | Box |
| Similarity | — | 1.0 | 1.0 | 1.0 |
Why these parts are catalog-similar
- 3RV20111AA200BA0 shares the spring-type load-side terminal arrangement and the 1.6A thermal-trip calibration. The approval scope differs (CE/VDE versus ATEX/CCC/CSA/IECEx/UL); this variant is packaged individually in a box rather than bulk.
- 3RV20111AA25 matches the seed on spring terminals and adds a built-in auxiliary contact block (1NO + 1NC). The approval list extends to include CE and VDE in addition to the seed's agencies; package style changes to box.
- 3RV20111AA40 shares the same spring terminal connection and 1.6A rating as the seed; its auxiliary contact configuration is not present in the current record, and it carries the broader CE/VDE additions alongside the seed's ATEX/CCC/CSA/IECEx/UL set.
Any of these parts requires the designer's own verification against the specific installation requirements and applicable standards.
Overview
Siemens 3RV20111AA20 is a three-pole, 1.6A thermal circuit breaker from the SIRIUS 3RV2 S00 series, designed for motor branch and general load protection in industrial control panels. The spring-type load-side terminations provide a tool-free wiring option that resists loosening under vibration, making it suitable for machine-tool panels and process equipment. The breaker carries ATEX, CCC, CSA, EAC, IECEx, and UL certifications, covering hazardous-area use and export-market acceptance for the covered protection functions. Mounting is via standard 35 mm DIN rail. The unit is packaged in bulk with no built-in auxiliary contacts.
Key Parameters
| Parameter | Value |
|---|---|
| Current Rating | 1.6A |
| Breaker Type | Thermal |
| Number of Poles | 3 |
| Actuator Type | Rotary |
| Mounting | DIN Rail (35 mm) |
| Illumination | None |
| Package | Bulk |
| Product Status | Active |
| Approval Agency | ATEX, CCC, CSA, EAC, IECEx, UL |
Integration Notes
The S00 size class corresponds to a compact frame suited for control cabinet layouts with moderate branch density. Spring-type load-side connections eliminate the need for screw-driven termination torque management in production wiring, though line-side terminations retain a standard bolted connection. The rotary actuator provides local manual reset and trip indication.
For motor protection applications, coordination with upstream short-circuit protection (fuse or upstream breaker) is a standard design consideration in any branch scheme. The current record does not include voltage ratings or published short-circuit withstand values; these parameters should be confirmed against the specific control voltage and prospective fault level of the target installation before final selection.
Selection Considerations
- Auxiliary contacts: The seed omits a built-in auxiliary contact block. If status signaling or remote trip indication is required, the designer must add a separate auxiliary module or select a variant that incorporates one (e.g., the auxiliary-equipped variants listed in the comparison table).
- Terminal type: Spring-type load connections suit vibration-prone environments and rapid panel wirings; confirm that field-side conductors are compatible with the spring clamp range.
- Certification overlap: The seed covers ATEX/IECEx for hazardous areas and major export-market listings (CCC, CSA, UL). Where CE or VDE conformance is mandated locally, a variant with those agencies may be needed.
- Package style: Bulk packaging supports high-volume assembly workflows where loose-unit kitting is managed at the panel builder level.
Similar Catalog Parts
| MPN | Description | Similarity |
|---|---|---|
| 3RV20111AA10 | MSP S00 1.1–1.6A SCREW | 1.0 |
| 3RV20111AA15 | MSP S00 1.1–1.6A AUX 1NO 1NC SCR | 1.0 |
| 3RV20111CA20 | MSP S00 1.8–2.5A SPRING | 0.92 |
| 3RV20111EA20 | MSP S00 2.8–4A SPRING | 0.92 |
| 3RV20111JA20 | MSP S00 7–10A SPRING | 0.92 |
- 3RV20111AA10 shares the bulk packaging, thermal protection, and identical approval set but uses screw-type load-side terminations instead of spring clamp.
- 3RV20111AA15 adds an integral auxiliary contact block (1NO + 1NC) while retaining bulk packaging and the same thermal/approval baseline; screw terminals are used.
- 3RV20111CA20 / 3RV20111EA20 / 3RV20111JA20 cover higher current settings (2.5A, 4A, and 10A respectively) within the same S00 spring-terminal form factor, enabling a common frame size across a motor branch range. The current record for the seed does not list a voltage rating; these higher-rated variants share the same approval scope and DIN rail mounting.
All listed parts are Active status.
FAQ
What is the current setting range of the 3RV20111AA20? The published current rating is 1.6A. The title indicates a setting range of 1.1–1.6A as part of the MSP (motor protection) designation, but the adjustment range endpoints are not explicitly supplied in the current record.
Does the 3RV20111AA20 include auxiliary contacts? No built-in auxiliary contact block is listed in the current record. The seed uses spring-type load terminals and bulk packaging.
What certifications does the 3RV20111AA20 carry? ATEX, CCC, CSA, EAC, IECEx, and UL. CE and VDE are not listed for this specific MPN.