Factory Automation

Protection Relays Product Features

We provide protection relays combining the abundant know-how cultivated and the latest technology in the distribution system of buildings and factories.

MELPRO-D Series

MELPRO-D series is suitable for feeder protection, motor protection and transformer protection applications.

MELPRO-A Series

MELPRO-A series is a protection relay for high-voltage power reception and distribution facilities.
The high reliability and upgrated functions support design, operation and maintenance of the systems.
The draw out type (RD type) model provides high maintainability.

MELPRO-S Series

MELPRO-S series is series is a numerical type protection relay with a microprocessor for protecting high/extra-high-voltage electric power system.
This series of protection relay will allow stable and effective control and monitoring odf electrical power system as well as provide high-reliable protection.