ABB

ABB REF601 Relion 605 Series Feeder Protection and Control Relay

SKU REF601

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: ABB

  • Product No.: REF601

  • Country of origin:United States

  • Product Type: Protection Relays

  • Payment: T/T, Western Union

  • Weight: 1200g

  • Dimensions: 160 mm x 130 mm x 150 mm (H x W x D)

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

The ABB REF601 is a dedicated feeder protection and control relay belonging to the Relion 605 Series. Designed for primary and secondary distribution networks, the REF601 provides protection, monitoring, and control functionality for utility and industrial power system overhead lines, cable feeders, and distribution transformers. It features an integrated local human-machine interface (LHMI) with built-in control buttons for single circuit breaker operation, support for conventional CTs or Rogowski current sensors, and serial communication capabilities.

Features

  • Part of the ABB Relion 605 series product family for utility and industrial installations
  • Integrated LHMI with dedicated push buttons for local control of one circuit breaker
  • Supports both conventional current transformers (4 CT inputs) and Rogowski current sensor configurations (3 sensor inputs, 1 CT input)
  • Selectable protection characteristics including Definite Time (DT), standard IEC 61255-3 IDMT curves, ANSI C37.112 IDMT curves, and RI Inverse
  • Three-level, role-based user authentication system with separate operator, engineer, and administrator passwords
  • Integrated self-supervision for hardware/software and trip-circuit monitoring (TCM)
  • Detachable terminals with CT shorting for reduced MTTR
  • Press-fit mounting design for panel installations
  • Non-volatile memory storage for 100 time-stamped events (1 ms resolution) and analog fault records for the last 5 trip events

Applications

  • Utility and industrial power distribution networks
  • Main protection for overhead line feeders and cable feeders
  • Main protection for distribution transformers using inrush current stabilization
  • Direct mounting on ABB circuit breakers VD4 and HD4

Technical Specifications

Parameter Value
Manufacturer ABB
Model REF601
Product Series Relion 605 Series
Device Type Feeder Protection and Control Relay
Analog Inputs (CT Version) 4 CTs
Analog Inputs (Sensor Version) 3 sensor inputs, 1 CT input (1 A for zero sequence/residual current)
Binary Inputs 4
Binary Outputs 6
Sequence of Events Storage 100 events (1 ms resolution)
Fault Data Storage Analog fault records for the last 5 trip events
Serial Communication Protocols MODBUS RTU, IEC 60870-5-103
Serial Interface RS-485, 2-wire

Connections/Interfaces

Interface Type Function / Assignment
RS-485 (2-wire) Serial communication port supporting MODBUS RTU / IEC 60870-5-103 protocols
Analog Inputs 4 CT inputs or 3 sensor inputs + 1 conventional CT input (1 A)
Binary I/O Terminals 4 configurable binary inputs and 6 configurable binary outputs
Terminal Type Detachable terminals with CT shorting

Installation Guidelines

  • Features a press-fit mounting design suitable for direct panel mounting or installation on ABB VD4 and HD4 circuit breakers.
  • Utilize detachable terminals with built-in CT shorting during wiring setup and maintenance to safely isolate CT circuits.
  • Connect the 2-wire RS-485 serial interface using proper communication line termination for remote automation integration.

FAQ

What is the ABB REF601 used for?

The ABB REF601 is a dedicated feeder protection and control relay used for protecting and controlling utility and industrial power systems, overhead lines, cable feeders, and transformers.

Which product series does the REF601 relay belong to?

The REF601 belongs to ABB's Relion protection and control product family within its 605 series.

Which communication protocols does the REF601 support?

The relay supports MODBUS RTU and IEC 60870-5-103 communication protocols over a 2-wire RS-485 serial interface.

Can the REF601 control a circuit breaker directly?

Yes. The REF601 includes integrated circuit breaker control functionality via dedicated push buttons on its local HMI.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

ABB REF601 Relion 605 Series Feeder Protection and Control Relay

Quantity
Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
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Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
United States

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