Phase failure relay, E1PF400VSY01

​The E1PF400VSY01 is a compact three-phase monitoring relay designed to ensure the stability and safety of electrical systems. Operating at a supply voltage of 400V AC, it monitors phase sequence, detects phase failures, and offers adjustable asymmetry monitoring between 5% and 25%, allowing for tailored protection against voltage imbalances. The optional neutral wire connection enhances its versatility, accommodating various system configurations. With a fixed tripping delay of approximately 100 milliseconds, the E1PF400VSY01 provides prompt response to electrical faults. Its slim 17.5mm DIN-rail mountable design facilitates easy installation in space-constrained control panels. Equipped with clear LED indicators, it offers real-time status updates for supply voltage and relay output. The relay includes a single changeover contact rated at 250V AC and 5A, ensuring reliable switching capabilities. Engineered for precision and durability, the E1PF400VSY01 is an ideal solution for safeguarding industrial electrical networks against phase-related issues. - Monitoring relays series ENYA - Phase sequence, phase failure monitoring - Asymmetry monitoring - Neutral conductor connection optional - Measuring voltage = supply voltage - Supply voltage 3x 400/230V AC - 1 changeover contact - width 17,5mm - Installation type