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acrel Arc Flash Protection Relay ARB4 for High voltage switchgear

● Model: ARB4-A1 ARB4-A2 ARB4-A3 ● 4 AC current channels and 3 AC voltage channels; ● 8 active switch input channels; ● 5 independent passive switch output channels; ● 1 RS485 serial communication interfaces, supporting IEC60870-5-103 and Modbus protocols; ● Phase sequence self-diagnosis - Capable of phase sequence ●used in industries such as electricity, water conservancy, transportation, industry, minerals, new energy, ships, and construction buildings.

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