REF542

Overview

REF542 is an ABB bay control and protection unit that combines the functions of a protection relay and a control device, widely used in switchgear for power distribution.

Identification

• Product No.: REF542

• Type: Bay Control and Protection Unit

• Manufacturer: ABB

Functionality

• Combined role: Protection relay + control device

• Application: Power distribution switchgear worldwide

• Concept: Designed for continuous evolution to protect customer investment

Operational Concept

• Basis: REF542plus operational concept derived from REF542

• Advancement: Consistent further development for easier transition

• Benefit: Facilitates changeover for operating and maintenance personnel

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