Siemens 3RV20211EA10 Motor Protective Circuit Breaker
Technical Specifications
| Parameter | Value |
|---|---|
| Mfr | Siemens |
| Series | MSP S0 |
| Current Rating | 4A |
| Voltage Rating (AC) | — |
| Number of Poles | 3 |
| Breaker Type | Thermal |
| Actuator Type | Rotary |
| Mounting Type | DIN Rail |
| Illumination | None |
| Approval Agency | ATEX, CCC, CSA, EAC, IECEx, UL |
| Product Status | Active |
| Package | Bulk |
The 3RV20211EA10 is a three-pole thermal motor protective circuit breaker in the Siemens MSP S0 series. It carries ATEX, CCC, CSA, EAC, IECEx, and UL certifications for industrial branch protection applications. The rotary actuator provides local manual control with bulk packaging suitable for panel builder stocking configurations.
Application Context
The MSP S0 series is a standard DIN-rail-mounted thermal overload protection family used in motor branch circuits and industrial control panels across process and manufacturing installations. The 4A frame covers motors in the fractional-to-mid horsepower range. Bulk packaging reflects a component orientation toward original panel build rather than service replacement channels.
Catalog Comparison — In-Catalog Variations
The table below presents the seed part alongside the highest-similarity in-catalog rows sharing identical spec keys. Similarity is a catalog screening metric only; it does not convey interchangeability or equivalence approval.
| Parameter | 3RV20211EA10 | 3RV20211EA15 | 3RV20211EA20 | 3RV20211EA25 |
|---|---|---|---|---|
| Current Rating | 4A | 4A | 4A | 4A |
| Poles | 3 | 3 | 3 | 3 |
| Breaker Type | Thermal | Thermal Magnetic | Thermal Magnetic | Thermal Magnetic |
| Actuator | Rotary | Rotary | Rotary | Rotary |
| Mounting | DIN Rail | DIN Rail | DIN Rail | DIN Rail |
| Illumination | None | None | None | None |
| Approval | ATEX, CCC, CSA, EAC, IECEx, UL | ATEX, CCC, CE, CSA, EAC, IECEx, UL, VDE | ATEX, CCC, CE, CSA, EAC, IECEx, UL, VDE | ATEX, CCC, CE, CSA, EAC, IECEx, UL, VDE |
| Package | Bulk | Box | Box | Box |
| Similarity | — | 1.0 | 1.0 | 1.0 |
Why These Are Catalog-Closest
3RV20211EA15 — shares the full terminal-style designation (SCREW) and adds an auxiliary contact block providing one normally open and one normally closed contact. This expands auxiliary signaling capability while preserving the same 4A thermal frame. CE and VDE appear in its approval list; the seed record lists only ATEX, CCC, CSA, EAC, IECEx, and UL.
3RV20211EA20 — shares the same 4A frame but substitutes a spring-loaded terminal style. Thermal magnetic protection appears in its specs where the seed lists thermal only. Package shifts to box rather than bulk.
3RV20211EA25 — combines the spring terminal style with the auxiliary contact block, giving both terminal ergonomics and signaling flexibility in a single catalog option.
Rating-Neighbor Parts (Same Series, Adjacent Frames)
Parts 3RV20211HA10, 3RV20211AA10, 3RV20211KA10, 3RV20211CA10, and 3RV20211FA10 share the MSP S0 series structure, rotary actuator, DIN rail mounting, three-pole layout, and non-illuminated design. The current ratings span the series range from 1.6A to 12.5A, covering progressively larger motor frames. All carry bulk packaging and share identical breaker type, actuator type, and mounting type.
Engineering Verification Checklist
- Confirm branch circuit short-circuit coordination with upstream protective device
- Verify thermal trip calibration matches motor full-load current
- Check terminal style matches field wiring practice (screw vs spring)
- Confirm auxiliary contact configuration meets control circuit signaling requirements
- Validate certification coverage for the installation environment (ATEX, IECEx for hazardous areas)
- Verify DIN rail clearance for adjacent devices and cable routing
- Confirm coordination with downstream contactor or motor starter
FAQ
What terminal style does the 3RV20211EA10 use? It uses a screw-type terminal connection per the SCREW designation in the title.
Does the 3RV20211EA10 include auxiliary contacts? The base part does not include an auxiliary contact block. The catalog variation 3RV20211EA15 adds a 1NO/1NC auxiliary contact assembly.
How does the current rating of 3RV20211EA10 compare to other MSP S0 frames in this comparison set? The 4A rating sits mid-range within the presented catalog rows. The lowest current rating in the shown set is 1.6A (3RV20211AA10) and the highest is 12.5A (3RV20211KA10), covering the full MSP S0 thermal frame spectrum.