ABB REX010 HESG324426R0001 – Auxiliary Protection & Control Module

Overview

The ABB REX010 (HESG324426R0001) is a compact auxiliary protection and control unit designed for integration in medium- and high-voltage switchgear, protection relays, and substation automation systems. It provides essential support functions such as signaling, logic handling, auxiliary protection tasks, and communication interfacing. With robust build quality and ABB-grade reliability, the REX010 is widely used in power distribution networks, industrial electrical systems, and utility substations.

Features

Reliable auxiliary protection for enhancing the capabilities of main protection relays.

Compact, modular design suitable for modern digital substations and switchgear panels.

High immunity to electrical noise, ensuring accurate operation under heavy EMC conditions.

Flexible logic configuration for tailored signalling, tripping, and interlocking schemes.

Long operational life, using industrial-grade components to support 24/7 operation.

Easy integration with other ABB protection platforms and automation systems.

Technical Specifications (non-table format for this model)

Model: REX010

Order Code: HESG324426R0001

Device Type: Auxiliary protection & control module

Input Types: Binary inputs for status and control signals

Output Types: Trip, alarm, and signaling outputs

Control Logic: Configurable internal logic matrix

Power Supply: Compatible with standard substation auxiliary voltages (e.g., 24–220 V DC depending on version)

Operating Temperature: –25°C to +55°C

Mounting Format: Panel-mounted module or relay-rack integration

Housing: Industrial-grade relay enclosure with high EMC shielding

Standards Compliance: IEC protection and control standards / ABB Relion® design principles

Structure & Components

The REX010 is designed with practicality and reliability in mind:

Processing core dedicated to auxiliary protection tasks and fast binary logic execution.

High-isolation input/output stage ensuring stable operation under transient events.

Integrated communication terminals enabling connection to external systems and devices.

Front interface indicators giving quick visual feedback for status, trip, and alarm signals.

Reinforced enclosure that protects internal electronics from dust, moisture, and vibration.

Application Fields

The ABB REX010 HESG324426R0001 is commonly used in:

Medium/high-voltage switchgear auxiliary control

Feeder, transformer, and busbar protection schemes

Substation automation and interlocking logic

Power plant electrical systems

Industrial distribution networks

Backup trip/alarm signaling for main protection IEDs

Thanks to its flexibility, it serves both as a standalone auxiliary device and as a supporting module within larger protection architectures.

Installation Guidelines

Install in a dry, vibration-free control panel or relay rack.

Ensure correct wiring of binary inputs and outputs following ABB layout diagrams.

Maintain adequate ventilation space around the unit.

Verify auxiliary supply voltage before energizing the device.

When integrating with a main IED, confirm signal compatibility and logic mapping.

Maintenance & Service Tips

Inspect wiring terminals periodically to ensure secure connections.

Keep the module clean; remove dust using non-conductive dry air.

Check event/alarm indicators during routine system checks.

Perform testing with ABB configuration tools if applicable for the version.

Replace only with ABB-certified parts to maintain protection reliability.

Additional Notes

The REX010 HESG324426R0001 enhances the flexibility and protection depth of ABB systems. Its stable performance and strong design make it a dependable element in substations and industrial electrical infrastructure.