Siemens 3RV20314WA10 Motor Starter Protector
Parameter Summary
| Specification | Value |
|---|---|
| Current Rating | 52 A |
| Poles | 3 |
| Breaker Type | Thermal |
| Mounting | DIN Rail |
| Actuator | Rotary |
| Approval | ATEX, CCC, CSA, EAC, UL |
| Illumination | None |
| Package | Bulk |
| Status | Active |
The 3RV20314WA10 is a three-pole, thermal-only motor starter protector (MSP) from Siemens' 3RV2 family rated at 52 A. It ships in bulk packaging with screw-type terminals and carries ATEX, CCC, CSA, EAC, and UL certifications. No auxiliary contacts or illuminated indicator are included.
Selection Trade-offs
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Current band — This part covers 42–52 A. The adjacent W-suffix variants in the same family step to 49–59 A (XA10) or 62–73 A (KA10), so confirm the protected motor full-load current falls within the 42–52 A window.
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Class 10 thermal vs. Class 20 thermal-magnetic — The W-suffix designates Class 10 (standard motor start). The WB10/WB15 variants carry Class 20 trip characteristics and add a magnetic element, suitable for motors with higher locked-rotor currents.
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Auxiliary contact configuration — The seed part has no auxiliary contacts. The WA15 variant adds one normally-open (1NO) aux contact for status indication or downstream coil control.
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Packaging preference — This part is bulk-packed. Box-packaged alternatives (WA15, WB10, WB15) may suit unit-based kitting; bulk suits panel-builder stock replenishment.
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Approval scope for hazardous locations — ATEX certification is listed for this part. Some alternates in the same family carry additional certifications (CE, IECEx, VDE) not present on this specific record; verify project-specific hazardous-area requirements against the approval agency list.
In-Catalog Comparison
| Part | Current Rating | Poles | Breaker Type | Package |
|---|---|---|---|---|
| 3RV20314WA10 (primary) | 52 A | 3 | Thermal | Bulk |
| 3RV20314WA15 | 52 A | 3 | Thermal Magnetic | Box |
| 3RV20314WB10 | 52 A | 3 | Thermal Magnetic | Box |
| 3RV20314WB15 | 52 A | 3 | Thermal Magnetic | Box |
Why the listed alternates are in the same catalog screening set
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3RV20314WA15 shares the 42–52 A thermal band and adds a magnetic element (Thermal Magnetic designation) with one normally-open aux contact and expanded approval coverage (CE, IECEx, VDE added). Package shifts from bulk to box.
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3RV20314WB10 maintains the 52 A current rating and three-pole, rotary-actuator structure but uses Class 20 thermal-magnetic protection, providing longer trip delays under sustained overload conditions. Package is box.
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3RV20314WB15 extends WB10 with one normally-open aux contact. Same Class 20 trip class, box packaging, and expanded approval set as WB10.
All listed alternates require the reader's own technical qualification before use. Similarity scores reflect catalog proximity only, not interchange approval.
Key Parameters
- MPN decode: 3RV20 — 3RV2 family (motor starter protector); 314 — frame size S2; W — current range 42–52 A; A — Class 10 trip; 10 — screw terminals, no aux.
- Actuator: Rotary (on-device manual reset/cycle)
- Mounting: 35 mm DIN Rail
- Illumination: Not present (no pilot-light element)
- Product Status: Active
Voltage and power dissipation figures are not present in the on-record data for this part; those parameters are not included in this summary.