1.GXB1 RS485 MCB can be used in 50Hz AC circuit with rated voltage 220V/3800v and rated current 80A for connecting breaking,timing,delay and distributing capacities and carrying rated curren. 2.GXB1 RS485 Modbus open communication protocol, and is a signal control circuit breaker. 3.Main line control, and it can be operated by computer and mobile phone, but also has manual operation function. 4.GXB1 RS485 inner has high performance chip, and can ensure reliable and stable operation. 5.Professional EMC comprehensive test to ensure the safety of the communication program , Modbus-RTU RS485. 6.Shock tolerance voltage 4000V, ensure that even in case of over-voltage, it still can effectively improve the service life of the equipment.