Description
The Littelfuse 202-RP is a precision-engineered 3-phase reverse phase monitoring relay built to safeguard motors and industrial equipment operating on 190–480VAC systems. Powered by microcontroller-based sensing technology, this relay continuously monitors phase rotation and delivers an instant trip response the moment a reverse-phase condition is detected — preventing costly motor damage, unplanned downtime, and premature equipment failure.
Once correct phase conditions are restored, the 202-RP automatically resets, eliminating the need for manual intervention and keeping operations running efficiently. Its auto-ranging voltage capability simplifies installation across a wide range of system voltages, while built-in LED diagnostic indicators allow technicians to quickly identify and resolve faults without extensive troubleshooting.
The compact, panel-mount form factor makes it an ideal fit for control panels and automation enclosures in space-constrained environments. Whether protecting HVAC systems, compressors, conveyors, elevators, or other motor-driven equipment, the 202-RP delivers dependable phase protection you can count on.
Key Features
- 3-phase reverse phase monitoring relay for continuous protection
- Wide operating voltage range: 190–480VAC with auto-ranging capability
- Instant trip response upon detection of reverse phase conditions
- Microcontroller-based sensing for precise, reliable accuracy
- Automatic reset once normal phase conditions are restored
- LED diagnostic indicators for fast, easy fault identification
- Compact form factor designed for panel and enclosure mounting
- Suitable for motors, HVAC systems, compressors, conveyors, elevators, and more
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