Motors are the backbone for industry powering countless operations from compressors, HVAC systems, cranes and pump houses. But with power comes vulnerability. Motors are susceptible to faults such as phase failures, overloading, short circuits and more. That’s where Minilec’s F3 MPR1 Motor Protection Relay comes in designed specifically to deliver intelligent, robust and real time protection for critical motor applications.
Built for Practical Challenges
Whether you’re running heavy-duty motors in screw compressors, AHU fan systems, crane operations or HT pumps, F3 MPR1 provides a comprehensive protective shield that maximizes uptime and minimizes costly breakdowns.
With over a decade of field-tested experience behind this product family, the F3 MPR1 is engineered not just for protection but for performance and reliability in some of the most demanding electrical environments.
Key Features that Matter in Real-World Applications
1. Multi-Fault Protection in One Device
Instead of relying on multiple discrete devices, F3 MPR1 integrates protection against:
- Phase failure and sequence issues
- Current unbalance
- Overload & short circuit
- Winding over temperature
- Locked rotor and earth fault
2. Microcontroller Based Accuracy
Powered by a microcontroller, F3 MPR1 intelligently monitors motor behavior. This digital approach delivers precision sensing and disturbance free operation, especially critical in high noise industrial environments.
3. Auto/Manual Resetting & Configurable Delays
With on delay and start up delay settings, the F3 MPR1 offers flexibility during power ups and variable load starts. The auto/manual reset options allow maintenance teams to adapt the relay behavior based on field conditions.
4. Adjustable Trip Settings
Technicians can easily configure trip points for undercurrent, overcurrent, overload, earth fault and locked rotor conditions giving tailored protection based on the motor type and duty cycle.
Built for Integration in Modern Control Panels
The F3 MPR1 is ideal for use in:
- Pump House Automation
- HVAC Panels
- Compressor Control Panels
- Heavy Duty Crane and Hoist Systems
- Industrial HT Motor Banks
Panel builders and plant managers value F3 MPR1 not just for its features, but for its ease of integration:
- RS485 serial communication port (MODBUS ready for SCADA/BMS systems)
- Backlit 16×2 LCD display for live diagnostics
- External CT inputs (CT5/CT20/CT50) for scalability
Made for Indian Industries
Proudly Made in India, F3 MPR1 is engineered with an understanding of Indian industrial power conditions, environmental stress factors and operator usage behavior. It’s a dependable choice for OEMs, contractors, and maintenance teams looking for proven reliability and modern features.
Why Choose F3 MPR1 for Your Motor Protection Needs?
- Reduces downtime and maintenance cost
- Prevents catastrophic motor failures
- Enhances operator safety
- Fits easily into existing panel layouts
- Provides real-time fault diagnostics and logs
Minilec F3 MPR1 isn’t just another motor protection relay, it’s a complete motor protection ecosystem built for the real challenges of industrial automation. From compressors, HVAC systems to cranes and pump houses, it keeps your operations running smoother, longer and smarter.
