MD-800A series microcomputer protection, measurement and control device is specially designed for box variable, ring network cabinet, small switchgear and other system applications and development, can be integrated in the circuit breaker or load switch + fuse cabinet use. With a variety of dynamic
With a variety of operating characteristics curve of the phase current protection, zero sequence overcurrent protection and external contact direct trip function, can be applied to bus, line, distribution transformers, motors, capacitors and other protection occasions.