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Acrel ALP220-EF Low-voltage Earth Fault Relay grounding overcurrent protector Modbus-RTU with LCD

● Inverse-time Overcurrent & Earth-fault (51/51G) ● Three-stage Definite-time Overcurrent & Earth-fault (50/51 50N/51N) ● Current Unbalance Protection (46) ● Residual Current Monitoring (50G) ● Modbus-RTU communication ● LCD display

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