ABB REF601 REF601BE446BD1NH

1. Product Overview

The ABB REF601 is a feeder protection and control device within the Relion® 605 series. It is specifically designed for utility substations and industrial power systems in primary and secondary distribution networks. The REF601BE446BD1NH is a specific model configuration of this series, classified as a line protection relay with a 5A CT current transformer input mode.

Integrating optimized protection, monitoring and control functions in a single unit, the device delivers superior performance and usability compared to peer products, backed by ABB’s profound expertise in power protection and digital technologies.

2. Technical Parameters

Parameter Item	Specification
Power Supply Voltage	24-265 V AC/DC (Universal Power Supply)
Rated Voltage	220V/380V
Rated Current	1A or 5A CT Input
Rated Frequency	50Hz/60Hz
Operating Temperature	-25°C to +70°C
Ingress Protection Rating	IP20
Isolation Voltage	2 kV RMS
Common Mode Rejection	50 dB
Device Dimensions	130mm (W) × 160mm (H) × 120mm (D)
Weight	Approx. 0.3kg
Communication Interfaces	Modbus RTU, IEC 60870-5-101/103, IEC 61850, DNP3.0, RS485
Input/Output Configuration	E/S Port: 4BI + 6BO (Binary Input/Output); Current Measurement: 3I (Three-phase Current) and I2 (Phase Current); Ground Current: Internal or External measurement via CBCT (Core Balanced Current Transformer)

3. Product Features

3.1 Comprehensive Protection Functions

• Three-stage overcurrent protection (51P, 50P)
• Ground fault protection (51N, 50N)
• Circuit breaker failure protection (50BF, 50NBF)
• Auto-reclosing function (68)
• Unbalanced load protection (46, 46PD)
• Thermal overload protection (49F)
• Overvoltage, undervoltage and out-of-step protection

3.2 Convenient Operation

• Local Human-Machine Interface (LHMI): Equipped with LCD display, LED status indicators (Ready, Start, Trip, etc.) and navigation keys
• User-friendly interface simplifies equipment operation and configuration
• Direct circuit breaker closing/opening control via HMI panel buttons
• Pre-configured functions support fast commissioning and debugging

3.3 Intelligent Monitoring

• Event logging: Stores 100 time-stamped events
• Fault recording: Saves fault data of the latest 5 trip events
• Trip circuit supervision: Ensures the availability of trip circuits
• Self-diagnosis system: Monitors hardware status and software operation in real time
• Role-based access control prevents unauthorized access

3.4 Flexible Configuration

• Programmable functions allow users to customize protection parameters and logical programs
• Compatible with traditional CTs and Rogowski coil sensors
• Compact structure design, suitable for equipment expansion, small switch cabinets and space-limited installation scenarios

4. Structure and Composition

Main Components

4.1 Local Human-Machine Interface (LHMI)

• LCD liquid crystal display
• LED status indicator lights
• ESC key and multi-directional navigation keys

4.2 Input/Output Terminals

• Detachable wiring terminals with CT short-circuit protection for enhanced operational safety
• Supports connection of traditional current transformers
• Compatible with Rogowski coil current sensors

4.3 Power Supply Module

• Universal power supply design
• Supports both AC and DC power input

4.4 Communication Module

• Equipped with RS485 communication port
• Supports multiple industrial communication protocols

4.5 Protection Unit

• Microprocessor control unit
• Digital signal processing module

4.6 Installation Structure

• Crimp-type installation design
• Four mounting holes at the bottom
• Compatible with DIN rail installation

------------------------------------------

Many products have not been listed yet. Please contact us for more products

📧 sales5@xrjdcs.com |  📞 +86 18250705533（WhatsApp）丨Sales Manager： Jinny  

Main brand

ABB 丨 GE 丨Allen Bradley  丨  Honeywell 丨   Emerson  丨  Bently Nevada   丨 Westinghouse  

Triconex  丨Foxboro 丨   ICS Triplex  丨  Hima  丨  Schneider 丨  Yokogawa  丨 Woodward  & more

Company philosophy:
The company always adheres to the business philosophy of “integrity, efficiency, and win-win”, and serves every new and old customer with the attitude of “integrity service, customer first”. With strong competitive products, large inventory, excellent quality, fast delivery time, and pre-sales consultation and service, we continue to provide products for our customers.

Professional operation of major automation modules, cards CPU、PLC、DCS， The distributed products are widely used in CNC mechanical metallurgy, petrochemicals, chemical engineering, paper printing, textile printing and dyeing, machinery, electronic manufacturing, automobile manufacturing, plastic machinery, electricity, water conservancy, water treatment/environmental protection, municipal engineering, boiler heating, energy, power transmission and distribution, etc.