Brand: ABB
Category: Other
Document Type: Manual
Language: EN
Manual for 620 series
Uploaded: April 20, 2026, 7:43 p.m.
Manual Publish Date: 2019-06-19
Warranty Information
Please inquire about the terms of warranty from your nearest ABB representative.
The REF620 is a numerical protection and control relay for high-end protection and supervision applications. It offers comprehensive protection functions, including overcurrent, earth-fault, and voltage protection. The device features a local HMI with a display and keypad for configuration and monitoring, as well as communication capabilities for integration into substation automation systems. It supports various communication protocols and standards like IEC 61850. The manual details the functionality, settings, signals, and technical data for each protection and control function.