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CDA503 CDA Protection Control Unit


This product is mainly used on the breaker of Ring Main Unit in order to control the switch open and close. And according to the status of index light, the fault can be found in short time, which can improve the efficiency. This control display can realize the overcurrent, quick break, delay quick break, reclosing and zero sequence over current protection function. More than 255 faults and records can be saved.



Control Option

Local, Lockout, Remote 

Earthing Protection 

When earthing on, switch is banned to open or close

Low Pressure Protection

Alarm Lights

According to the number of sparking, the type of faults can be identified. 

Self-Check Function

This device can check itself and working environment, and if there is a fault, alarm.