Siemens SIRIUS Motor Protection Circuit Breaker (3RV2031-4PA15)
The Siemens 3RV2031-4PA15 is a high-performance, current-limiting motor protection circuit breaker from the SIRIUS innovation range. Optimized for load feeders, this 3-pole breaker provides reliable short-circuit and overload protection for motors up to 36A. This specific model includes a pre-installed 1NO + 1NC transverse auxiliary switch, allowing for seamless integration into your control and signaling circuits.
Key Performance Features
Comprehensive Protection: Provides both magnetic (short-circuit) and thermal (overload) tripping to safeguard 3-phase motors.
Integrated Monitoring: Features a transverse auxiliary switch (1 normally open + 1 normally closed) for remote status signaling or interlocking.
SIRIUS Innovation Design: Compact Size S2 frame designed for high packing density in control cabinets and easy mounting on standard 35mm DIN rails.
Global Compliance: Engineered to meet international standards (IEC, UL, CSA), making it suitable for industrial applications worldwide.
Durable Construction: Built for high-switching frequency and extreme reliability in demanding industrial environments.
Technical Specifications
| Specification | Details |
| Model Number | 3RV2031-4PA15 / 3RV20314PA15 |
| Current Rating | 36 A |
| Voltage Rating | 690 VAC |
| Number of Poles | 3-Pole |
| Trip Class | CLASS 10 |
| Auxiliary Switch | 1NO + 1NC (Transverse) |
| Size | S2 |
| Trip Type | Magnetic and Thermal |
Installation & Maintenance Tip
Adjustment Note: Before commissioning, ensure the current setting dial on the front of the unit is adjusted to the Actual Full Load Amps (FLA) of the motor being protected. This ensures the thermal overload protection is precisely calibrated to your specific machine’s requirements.
