Home/allen-bradley/Product/Bulletin 857 Motor/Feeder Protection Relay, 40...265Vac/dc Supply Voltage, COM Port 1 has TTL/RS-232 (VCM TTL) COM Port 2 has Built in RJ45 10-Mbps Ethernet Interface
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Bulletin 857 Motor/Feeder Protection Relay, 40...265Vac/dc Supply Voltage, COM Port 1 has TTL/RS-232 (VCM TTL) COM Port 2 has Built in RJ45 10-Mbps Ethernet Interface

Reference : 857-3C6AAL