Overview

The ABB REF542PLUS 2RCA029395 is a compact, multifunctional feeder terminal designed for medium-voltage switchgear applications. It integrates protection, control, measurement, and communication in a single unit, reducing panel complexity and improving operational efficiency. The device supports IEC 61850, Modbus TCP, and Profibus DP protocols, making it compatible with modern SCADA and substation automation systems.

Its modular architecture allows flexible I/O configurations and hot-swappable modules, enabling quick adaptation to different feeder types. Moreover, the terminal features a graphical LCD interface for intuitive local control and diagnostics. With IP54 front protection and robust internal shielding, it performs reliably in harsh industrial environments. Therefore, it’s ideal for both new installations and retrofit upgrades in utility and industrial networks.

In addition, REF542PLUS supports advanced protection functions such as overcurrent, earth fault, and motor protection, ensuring fast fault detection and system stability.

Technical Data

Typical Applications

• Feeder Protection in Medium-Voltage Switchgear: Ideal for substations and industrial distribution systems.

• Motor Protection: Suitable for chemical plants, water treatment facilities, and manufacturing lines.

• Smart Grid Integration: Enables seamless communication with SCADA systems using IEC 61850 protocol.

• Substation Automation: Supports remote control, event logging, and fault diagnostics for enhanced grid management.

• Retrofit Upgrades for Legacy Switchgear: Adds digital functionality to outdated switchgear.

For instance, in a packaging facility, REF542PLUS monitors multiple feeders and motor loads, detects faults instantly, and communicates with the central control system to ensure uninterrupted operation.

FAQ

Q: What voltage range does REF542PLUS support?
A: It operates on 110–230 V AC/DC.

Q: Can it be used for motor protection?
A: Yes, it includes motor protection functions alongside feeder protection.

Q: Does it support IEC 61850?
A: Absolutely. It also supports Modbus TCP and Profibus DP.

Q: Is it suitable for retrofit installations?
A: Yes, its modular design and compact size make it ideal for upgrades.

Q: What kind of display does it have?
A: It features a graphical LCD with backlight for local monitoring and control.