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ABB REF542PLUS Product Details

Dec 27, 2025 ABB

REF542PLUS is launched by ABB Group.It integrates measurement,monitoring,protection,control and self-diagnosis functions,providing users with a comprehensive power system protection and management solution.It uses advanced digital technology and communication protocols to monitor the status of the power system in real time and respond quickly to abnormal situations.

ABB REF542PLUS

Main Features

Comprehensive protection

REF542PLUS can be used for the protection of medium-voltage and low-voltage distribution systems to ensure that the power system quickly cuts off the fault area in the event of a fault,thereby improving the reliability of the system.

In substations,it can protect transformers,switchgear and other key equipment to ensure the safe and stable operation of substations.

The product is also suitable for industrial power systems,including manufacturing,chemical plants and other industrial facilities,to protect equipment from power failures.

Flexibility and scalability

REF542PLUS can be easily integrated into any substation automation system of ABB or a third party through integrated communication protocols,with excellent flexibility and scalability.

It can also be seamlessly integrated into other distribution automation products of ABB.

High-precision measurement and monitoring

The product has high-precision measurement and monitoring functions,and can display the status and various parameters of the power system in real time,such as input and output status,current and voltage,etc.

Easy to configure and operate

The control display panel of REF542PLUS adopts a high-definition display screen,which can clearly display various information and facilitate users to view and operate.

Users can configure various parameters of the relay through the panel,such as input and output type,alarm settings,etc.,and display the status of the relay in real time.

Self-diagnosis function

The product has a self-diagnosis function,which can detect and report equipment failures in time,improve system reliability and maintenance efficiency.

Application fields

REF542PLUS is widely used in various industrial automation application scenarios that require digital output,including but not limited to

Medium voltage and low voltage power systems

Substations

Industrial power systems(manufacturing,chemical plants,etc.)

Wind farms(protecting wind turbines and related electrical equipment)

Solar farms(protecting power equipment of inverters and other solar cell systems)

Rail transit systems(protecting rail power systems and related equipment)

Urban infrastructure(hospitals,schools,commercial buildings,etc.)

ABB REF542PLUS

Product parameters

The main parameters of REF542PLUS include(but are not limited to)

Display type:IPS

Input voltage:24V(some data also indicate that its rated voltage is 690V,which may be related to different models or application scenarios)

Rated current:5A

Operating temperature:up to 60°C

Communication interface:HDMI interface(the specific communication interface may vary depending on the model or configuration)

Alarm type:light alarm

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