This product page details the Siemens 3RV2 motor protection circuit breaker, a precision-engineered device specifically designed for protecting small three-phase motors in industrial applications. Rated for 0.18kW motors with an adjustable current range of 0.55-0.8A and a wide voltage rating of 220-690VAC, this DIN-rail mounted MPCB provides comprehensive overload and short-circuit protection for reliable motor operation.
Overview of the Motor Protection Circuit Breaker
The Siemens 3RV2 motor protection circuit breaker serves as an essential component in motor control systems requiring precise protection. Because it integrates both thermal overload protection and magnetic short-circuit protection in a single compact unit, it offers a space-efficient and cost-effective solution for safeguarding small three-phase motors against electrical faults and operational overload conditions.
Key Features and Technical Specifications
This MPCB is engineered for precision protection of small motors. Therefore, here are its essential characteristics:
- Motor Power: Rated for 0.18kW (approximately 1/4 HP) motors
- Current Range: Adjustable 0.55-0.8A for precise motor matching
- Voltage Rating: 220-690VAC for versatile three-phase applications
- Mounting: Standard 35mm DIN rail mounting
- Protection Functions: Integrated overload and short-circuit protection
- Tripping Class: Class 10 for fast motor protection
- Design: Compact design for space-optimized panel layouts
- Standards: Compliant with IEC/EN 60947-2 and IEC/EN 60947-4-1
Typical Applications and Use Cases
The specific current rating of this motor protection circuit breaker makes it ideal for various small motor applications. For example, it is commonly used for:
- Small industrial pump and compressor motors
- Ventilation and exhaust fan motors
- Conveyor system small drive motors
- Packaging machinery auxiliary motors
- HVAC system small fan and pump motors
- Laboratory and analytical equipment motors
- Process control system small actuator motors
For complete motor control solutions, explore our range of compatible Siemens contactors and motor starters designed to create coordinated motor starter combinations.
Why Choose This Specific 3RV2 MPCB?
Selecting this Siemens 3RV2 motor protection circuit breaker provides crucial advantages for low-power motor circuits. Firstly, the precise adjustable current range (0.55-0.8A) allows for perfect matching to small motor nameplate specifications, providing optimal protection without nuisance tripping. Secondly, the wide 220-690VAC voltage rating offers exceptional application flexibility across different three-phase power systems without requiring device changes. Consequently, you achieve reliable motor protection that ensures operational continuity while preventing damage to sensitive small motors in critical applications.
Installation and Setting Guidelines
Correct installation and calibration of this motor protection circuit breaker are vital for optimal performance. Mount the device securely on a 35mm DIN rail and connect the power conductors according to the motor specifications. Carefully set the current adjustment dial to match the motor’s exact nameplate full-load current, ensuring the setting falls within the 0.55-0.8A range. Furthermore, always perform functional tests to verify that both overload and short-circuit protections operate correctly according to the manufacturer’s specifications before placing the system into service.
For detailed technical specifications and application guidelines, consult the comprehensive Siemens 3RV2 technical documentation.
Protect Your Small Motor Investments Today
In summary, the Siemens 3RV2 motor protection circuit breaker with its 0.55-0.8A adjustable range represents a precision solution for small motor protection requirements. Finally, by incorporating this specialized protective device into your motor control systems, you ensure equipment safety, reduce downtime, and extend motor lifespan in your industrial and commercial applications.
