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ABB REF541 multifunctional feeder protection relay for medium-voltage distribution systems, integrating protection, control, measurement and automation. Supports SPA, LON, IEC 60870-5-103, IEC 61850, Profibus DPV1, Modbus, DNP 3.0.
Recognized manufacturer reference available for industrial supply enquiry.
ABB REF542plus bay control and protection unit for medium-voltage switchgear. Rated current 0.2/1/5 A; rated voltage 100-125 V; protection and control class 3.
ABB REF542plus compact digital bay control unit for medium-voltage switchgear automation, integrating measurement, monitoring, protection, control and self-diagnostics. Rated 24 kV / 1250 A; 50/60 Hz; ~1.15 kg.