Overview

The ABB REF630 1KHL160003R0001 is a high-performance feeder protection and control relay engineered for medium-voltage distribution networks. As part of the Relion® 630 series, it is optimized for radial, looped, and meshed power systems — including those incorporating distributed energy resources.

This relay unifies protection, control, measurement, and monitoring into a single intelligent unit, enabling grid operators to detect faults rapidly, optimize load management, and maintain power system stability. Its compact 4U, half-width 19" rack-mount design supports seamless installation in modern and retrofit switchgear environments.

With native support for IEC 61850, Modbus, DNP3, and SPA protocols, the REF630 fully aligns with digital substation standards, ensuring future-proof connectivity and easy system integration.

Modular hardware options and flexible configuration tools simplify engineering, commissioning, and firmware upgrades — making it adaptable to evolving operational requirements.

Technical Data

Typical Applications

The REF630 is widely deployed in medium-voltage distribution for:

• Utility substations

• Industrial electrical networks

• Renewable generation feeders (solar, wind)

• Urban distribution networks with complex meshed structures

• Smart grid infrastructures using IEC 61850

Its advanced logic functions and remote operation capabilities enhance grid automation, fault isolation, and restoration performance — supporting higher availability and operational safety.

Therefore, the REF630 is a core component in maintaining reliability, asset protection, and efficient energy delivery across modern electrical networks.

FAQ

Q: What types of networks can the REF630 protect?
A: Radial, looped, and meshed MV systems, including those with distributed generation.

Q: Does it support digital substation standards?
A: Yes — full IEC 61850 support enables digital substation integration.

Q: What protection functions are included?
A: Overcurrent, earth-fault, breaker failure, and auto-reclose, among others.

Q: How is it mounted?
A: 4U height, half-width 19" rack format for compact switchgear installation.

Q: What communication protocols are supported?
A: IEC 61850, Modbus, DNP3, and SPA for broad interoperability.