Anly APR-4S 3 Phase Sequence Protection Relay 380-480VACThe Anly APR 4S is a three phase sequence protection relay designed for industrial applications requiring voltage monitoring and phase sequence detection. Operating across 380 480VAC, this relay safeguards motors and equipment from phase loss, phase reversal, and voltage imbalance conditions that can cause damage or malfunction. Key features include reliable phase sequence monitoring, adjustable sensitivity settings, and compact DIN rail mounting for