ABB REJ601 BD446NN1XG | Relion 605 Feeder Protection & Control IED-Guangzhou Qiming Automation Technology Co., Ltd.

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ABBREJ601 BD446NN1XG is a standalone feeder protection relay (no breaker control) in the Relion® 605 series, optimized for MV distribution networks. It provides reliable, cost‑effective protection for cables, overhead lines, and distribution transformers in utility and industrial systems.

The BD446NN1XG variant offers three‑stage overcurrent protection (50/51, DT/IDMT) and two‑stage earth fault protection (50N/51N), plus thermal overload, negative‑sequence, phase discontinuity, and transformer inrush stabilization. It supports both conventional 1A/5A CTs and Rogowski coil sensors.

Local operation is via a graphical LCD with configurable HMI, while a front USB port enables easy configuration and fault data upload (PCM600 tool). Communication includes Modbus RTU and IEC 60870‑5‑103, with robust self‑supervision and press‑fit mounting for simple installation in compact switchgear.

ABB REJ601 BD446NN1XG Relion® 605 Series Feeder Protection Relay

Technical Specifications：

Attribute	Details
Manufacturer	ABB
Model	REJ601 BD446NN1XG
Series	Relion® 605 Series
Product Type	Feeder Protection Relay (no breaker control)
Application	MV distribution feeders (6/10/20/35kV), cables, overhead lines, distribution transformers
Protection Functions	3‑stage overcurrent (50/51, DT/IDMT), 2‑stage earth fault (50N/51N), thermal overload, negative‑sequence unbalance, phase discontinuity, inrush stabilization, auto‑reclosing
Analog Inputs	4 channels (3 phase currents, 1 earth current); 1A/5A CT or Rogowski coil
Digital Inputs	8 configurable
Output Contacts	2 power (trip), 4 signal (alarm)
Power Supply	24–265V AC/DC (universal)
Communication	Modbus RTU, IEC 60870‑5‑103
HMI	Graphical LCD, configurable
Configuration	Front USB (PCM600), local HMI
Mounting	Panel mount, press‑fit design
Operating Temperature	−25°C to +70°C
Protection Class	IP40 (front)
Certifications	IEC 60255, CE, UL 508

ABB REJ601 BD446NN1XG Relion® 605 Series Feeder Protection Relay

Key Features & Advantages：

Core Feeder Protection: Three‑stage overcurrent + two‑stage earth fault as standard.
Cost‑Effective: Basic range, no unnecessary breaker control functions.
Flexible Sensing: Supports both conventional CTs and Rogowski coils.
Easy Commissioning: Preconfigured logic + front USB for fast setup.
Universal Power: 24–265V AC/DC, no need for custom power supplies.
Compact & Rugged: Fits in small switchgear; wide temperature range.
Reliable Communication: Modbus RTU and IEC 60870‑5‑103 for SCADA.

ABB REJ601 BD446NN1XG Relion® 605 Series Feeder Protection Relay

Application Fields：

Utility Distribution: MV feeders in 6–35kV substations.
Industrial Plants: Petrochemical, mining, metallurgy, pulp & paper.
Renewable Energy: Wind/solar farm collector feeders.
Infrastructure: Airports, railways, data center MV distribution.

FAQ：

Q1: What’s the difference between REJ601 and REF601?

A1: REJ601 = feeder protection without breaker control; REF601 = feeder protection with breaker control.

Q2: Does REJ601 BD446NN1XG support IEC 61850?

A2: No. Standard protocols are Modbus RTU and IEC 60870‑5‑103; IEC 61850 is available on higher‑end models.

Q3: Can it be used for transformer protection?

A3: Yes, with inrush current stabilization to avoid nuisance tripping during energization.

Q4: What CT ratios are supported?

A4: 1A or 5A CT secondary, selectable onsite via HMI or software.

Q5: Is this model still in production?

A5: Yes (Version 2.5 released 2024); it’s a current, active model in the Relion® 605 series.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

2. What payment methods and currencies do you accept?

To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.

How many parts do you currently have in stock?

We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.