Provides comprehensive protection with four independent setting groups, two-winding transformer phase differential protection (87T), non-directional phase and ground overcurrent protection, high/low impedance ground differential protection (REF-64R), and inverse/definite time overcurrent protection with IEC/IEEE curves.

Features advanced functions such as harmonic blocking, thermal overload protection (49), breaker failure detection (50BF), under/over-voltage protection (27/59), overexcitation protection (99), and SOTF capabilities via AProLogic.

Equipped with metering, disturbance recording (10 nos.), event recording (512 nos.), and fault recording (10 nos.) with non-volatile memory, and provides detailed data visualization on an HMI display.

Supports multiple communication protocols, including IEC61850, IEC60870-5-103, MODBUS TCP, and optional IEC104, with connectivity via single/dual Ethernet ports, RS485, and a front PC communication port for easy relay settings.

Ensures operational security with programmable I/Os, dual-color programmable LEDs, trip circuit supervision, self-supervision, a special CT terminal connector for auto-short functionality, and password-protected local operation with a backlit LCD and keypad.