LY-RCD200 series residual current monitoring device is installed in the 0.4kV low-voltage distribution system to detect the residual current, temperature and other electrical parameters related to electrical fire hazards in TN-C-S, TN-S and local TT systems. When the parameters of the monitoring device in the protected line exceed the alarm set value, alarm and control signals can be generated to eliminate the electrical fire hazards caused by residual current. The product uses RS485 bus for communication, and can be combined with other alarms, monitoring units or monitoring hosts to form a fire monitoring system.

The residual current/temperature detector has the characteristics of sensor fault diagnosis, high alarm degree, strong reliability (can effectively prevent false alarm and missing alarm), miniaturization, multi-function, convenient installation, etc.

It is applicable to large shopping malls, high-end living quarters, production bases, office buildings, shopping malls, hotels, densely populated public places, etc.