Comprehensive and Advanced Protection The KAEL FKR4N-DIN is one of the most comprehensive and advanced models in the phase protection relay series. It provides full-scale protection by monitoring not only phase errors but also over-voltage and under-voltage limits.

Comprehensive Voltage and Phase Monitoring: The FKR4N-DIN protects your motors against all grid-related irregularities. Thanks to its adjustable upper and lower voltage limits, it safely shuts down the system when the voltage rises too high or falls to dangerous levels. With adjustable asymmetry and delay settings, it puts system sensitivity completely under your control. It is a full-scale safety shield for professional panels.

Adjustable voltage protection relay, KAEL FKR4N-DIN specs, over/under voltage protection, delayed phase relay, neutral loss detection, 380V full protection.

Full Monitoring: Reduces panel costs by monitoring both voltage fluctuations and phase errors with a single device.