Siemens 3RV20314EB10 Motor Starter Protector
Panel Placement and Ratings
The 3RV20314EB10 is a Size S2 motor starter protector (MSP) sized for 22–32 A motor branch circuits. It mounts on a 35 mm DIN rail in standard industrial enclosures; the three-pole thermal design suits AC motor overload protection per IEC/UL requirements. Current rating is fixed at 32 A; no adjustable thermal setpoint appears in the record.
Comparison Against Similar Siemens MSP Units
The reader must verify all specifications directly against datasheets and applicable standards; similarity scores reflect catalog parametric overlap only and do not imply interchangeability.
| Spec | 3RV20314EB10 | 3RV20314EB15 | 3RV20314EA10 |
|---|---|---|---|
| Current Rating | 32 A | 32 A | 32 A |
| Breaker Type | Thermal | Thermal Magnetic | Thermal |
| Class | 20 | 20 | 10 |
| Poles | 3 | 3 | 3 |
| Actuator | Rotary | Rotary | Rotary |
| Mount | DIN Rail | DIN Rail | DIN Rail |
| Approval | CCC, CSA, EAC, UL | CCC, CE, CSA, EAC, UL, VDE | CCC, CSA, EAC, IECEx, UL |
| Similarity | — | 1.0 | 1.0 |
3RV20314EB15 carries identical current, pole count, and Class 20 rating; it adds a built-in 1NO auxiliary contact and broader CE/VDE marking. The trade-off is box packaging versus bulk.
3RV20314EA10 matches on current, poles, and DIN rail mounting but uses Class 10 tripping (standard motor warming curve) rather than Class 20 (higher inrush tolerance). It omits thermal-magnetic construction and carries fewer agency marks.
Engineering Verification Checklist
- Confirm load current does not exceed 32 A continuous
- Verify motor full-load current and locked-rotor current are compatible with Class 20 tripping curve
- Check that enclosure ambient temperature does not exceed rating for thermal element
- Confirm DIN rail dimension and clearance compatible with Size S2 frame
- Validate that upstream short-circuit protective device coordinates with 3RV2031 interrupting rating
- Verify auxiliary contact configuration (if required) is not needed; seed has none
- Confirm agency approvals (CCC, CSA, EAC, UL) cover the installation jurisdiction
- Review grounding and bonding termination torque requirements for screw-type line/load terminals