ABB RER620 Recloser Control and Protection Relay

Product Overview

The ABB RER620 is a recloser control and protection relay for medium-voltage distribution networks.
As part of ABB’s Relion® product line, it integrates protection, control, measurement, communication, and automatic reclosing functions to enhance distribution network reliability and automation.

Main Functions and Applications

• Advanced Protection : Overcurrent, ground fault, negative sequence overcurrent, voltage, and frequency protection against diverse grid faults

• Recloser Control : Executes pre-set reclosing sequences to quickly restore power after temporary faults (e.g., lightning strikes, tree contacts)

• Remote Control & Communication : Supports protocols such as DNP3 and IEC 61850, enabling integration with SCADA for remote monitoring and control

• Measurement & Monitoring : Real-time measurement of voltage, current, power, and frequency; event, fault, and waveform recording for fault analysis

• Programmable Logic : Built-in logic for flexible configuration based on application requirements

Specifications and Model Data

• Product Type : Recloser Control and Protection Relay

Communication Interfaces

• Typically 2–3 ports:

• One or more Ethernet ports (RJ45/LC)

• Configurable RS232/RS485 port

I/O Modules

• Analog Input : Up to 3 CT (current transformer) + 6 VT (voltage transformer) inputs

• Digital I/O : Up to 20 binary inputs (BI) and 14 binary outputs (BO) configurable

Power Supply

• DC supply : 24 V, 48 V, 110 V, 220 V

• AC supply : 100–240 VAC

Mechanical & Environmental

• Mechanical durability : Up to 10,000 operations

• Operating temperature : -60 °C to +65 °C

• Protection rating : Typically IPX5, NEMA 3R (dust and water resistant, outdoor ready)