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ABB 1MRK002311-AAR02 optical long-range line data communication module (LR LDCM), single-mode 1550 nm, for ABB protection and control systems.
ABB 1MRK002311-AAR06 communication module for ABB Relion series protection and control systems. Ethernet-based, supports IEC 61850.
ABB RED670 (Ver. 1.2) line differential protection relay, part number 1MRK002810-AB.
ABB RET650 series transformer protection relay (1MRK008516-BA) for protection, monitoring and control of two- and three-winding transformers, autotransformers and shunt reactors. Differential, impedance, overcurrent, voltage, frequency and ground-fault protection; IEC 61850, Modbus.