Siemens 3RV20314XA10 Motor Starter Protector
The 3RV20314XA10 is a Siemens SIRIUS 3RV2 series Size S2 thermal motor starter protector with a Class 10 tripping characteristic covering the 49–59 A adjustment range.
Engineering verification checklist
- Confirm DIN rail mounting clearance per IEC 60715 width requirements for Size S2 devices
- Verify three-pole thermal breaking matches motor full-load current (59 A setpoint within 49–59 A dial range)
- Check that upstream short-circuit protection coordination (backup fuse or circuit breaker) suits the installation's prospective fault level
- Confirm applicable IEC 60947-2 / UL 508 clearance and creepage distances for the voltage rating in the target circuit
- Validate that the bulk (unpackaged) shipment form is compatible with incoming inspection and storage procedures
- Confirm CCC, CSA, EAC, IECEx, and UL listing scope covers the specific end-use jurisdiction and environment
- Review rotary actuator torque and cycling requirements against panel operator interface design
- Verify torque specifications for power terminal connections match cable gland/lug tooling available in the field
- Confirm Class 10 (10× In max trip within 10 s at ambient) is appropriate for the connected motor thermal withstand characteristics
Comparison with Siemens 3RV2 family alternates
All listed alternates share the same Siemens SIRIUS 3RV2 Size S2 platform, three-pole configuration, DIN rail mounting, rotary actuation, and bulk/box packaging options. Readers must evaluate each MPN against specific application requirements.
| Spec | 3RV20314XA10 (seed) | 3RV20314XA15 | 3RV20314XB10 | 3RV20314XB15 | 3RV20314KA10 | 3RV20314PA10 | 3RV20314EA10 | 3RV20314UA10 | 3RV20314WA10 |
|---|---|---|---|---|---|---|---|---|---|
| Current Rating (A) | 49–59 | 49–59 | 49–59 | 49–59 | 62–73 | 28–36 | 22–32 | 32–40 | 42–52 |
| Breaker Type | Thermal | Thermal Magnetic | Thermal Magnetic | Thermal Magnetic | Thermal | Thermal | Thermal | Thermal | Thermal |
| Trip Class | 10 | 10 | 20 | 20 | 10 | 10 | 10 | 10 | 10 |
| Package | Bulk | Box | Box | Box | Bulk | Bulk | Bulk | Bulk | Bulk |
| Similarity | — | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
- 3RV20314XA15 shares the 49–59 A range and Class 10 trip; adds ATEX, CE, and VDE approvals and includes a 1NO auxiliary contact, packaged as box rather than bulk.
- 3RV20314XB10 and 3RV20314XB15 adopt Class 20 (20× In trip within 20 s), suited to motors with higher locked-rotor thermal tolerance; they carry additional CE and VDE markings.
- 3RV20314KA10, 3RV20314PA10, 3RV20314EA10, 3RV20314UA10, and 3RV20314WA10 represent adjacent current bands (62–73 A down to 22–32 A) in the same Size S2 frame, useful for range stacking or future load changes.