Fanox PF-R – Pump Protection Relay | 3-Phase Cos φ | No Level Sensors
SKU
FANOX-PFR
Fanox PF-R protects 3-phase submersible and surface pumps 1–630A via cos φ monitoring. Detects dry running without level sensors. Thermal image, visual trip indication.
DIN Rail
Panel Mount
CE Certified
Fanox PF-R – Pump Protection Relay (3-Phase Cos φ)
The Fanox PF-R is the world-leading pump protection relay for 3-phase motors. It detects dry running, cavitation, and flow loss conditions by monitoring the power factor (cos φ) of all three phases — eliminating the need for float switches or level sensors. This makes it uniquely reliable in submersible pump applications where sensor placement is difficult or unreliable.
- 3-phase dry-running detection via cos φ measurement — no level sensors needed
- Designed for 3-phase motors 1–630 A and over
- Continuous thermal-image memory for heating and cooling cycle control
- Immediate phase-loss detection even at reduced load
- Visual LED indication of tripping cause
- Adjustable reset time for cos φ threshold
- Manual, remote, and automatic reset options
The PF-R is the core protection device in Fanox CBT and CBS pump panels and is trusted by leading water utilities, oil & gas operators, and agricultural irrigation systems worldwide.
| Specification | Value |
|---|---|
| Product Series | Pump Protection |
| Protection Functions | Overload Protection, Phase Loss Protection, Phase Imbalance, Phase Sequence, Dry Running Detection |
| Application / Industry | Irrigation Systems, Oil & Gas, Water Treatment, Pumps & Water Systems |
| Mounting Style | DIN Rail, Panel Mount |
| Certifications | CE Certified |