The ABB REJ601 is a numerical relay designed for feeder protection in industrial and utility power systems.

It helps protect electrical equipment on power grids from damage caused by excess current.

Here are some key things to know about the ABB REJ601:

• Function: Feeder protection relay
• Applications: Protects utility substations and industrial power systems in primary and secondary distribution networks
• Features: Offers a variety of protection functionalities including overcurrent and earth fault protection

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