ECM812 low-voltage circuit protection devices ECM812 circuit protection devices adapted to the rated voltage of AC380V low-voltage power distribution feeder circuits, circuit load condition monitoring and protection. Protector offers a variety of electrical parameters measured, complete protection, switch status monitoring, fault records and other functions, and combined with PC monitoring system via bus communication function, and constructing an integrated automation control systems. Protection using modular design, the main body and CT module, display module remote installation, small size, compact structure, can be installed in a variety of drawer cabinets. Minimum complete system consists of the main module and special current transformers (CT module referred to), with selected as needed to increase the display module. Modular design, product structure includes a main body modules, CT modules, display module; standard four kinds of protection functions including overcurrent inverse time, definite time overcurrent, current instantaneous trip, ground fault protection; optional voltage protection, leakage protection, voltage protection including overvoltage, undervoltage protection; to achieve the three-phase current measurement circuit, ground current, three-phase line voltage, leakage current, and other electrical parameters; protector body provides 5-way switch input signal is used to open and close (breaker mode), the circuit breaker status signal input; provide three relay outputs, including closing the output opening output and fault signal output; the DCS provides one 4 ~ 20mA analog output, choose a variety of parameters, and the range is adjustable; 8 fault records, record information about when the fault occurred; maintenance easy management, through the display module or communication software can detect various electrical parameters, fault information and other parameters; easy to install, standard 35mm rail mounting, wiring is simple, using pluggable terminal; support MODBUS-RTU communication protocol or PROFIBUS communication protocols; wide power supply design, common AC or DC; relay driving ability, can support DC control loop (with Z function); compact, can be installed in 1 / 4 drawer cabinet;