Description

Technical Specifications

• Product Model: ABB REJ601 BD446NN1XG
• Brand: ABB
• Warranty: One Year Full Coverage Warranty
• Working Voltage: 24–265V AC/DC Universal Auxiliary Supply
• Working Temperature: -40°C to 70°C
• Storage Condition: -50°C to 85°C, Non-condensing Humidity
• Interface Type: Terminal blocks, front USB port, Modbus RTU, IEC 60870-5-103
• Anti-interference Level: Industrial EMC Anti-interference Standard

Product Overview

The ABB REJ601 BD446NN1XG feeder protection relay belongs to ABB Relion 605 series. It is a compact numerical overcurrent protection IED designed for medium voltage overhead lines and cable feeders in utility and industrial distribution networks. It supports solidly earthed, resistance-earthed and isolated power systems. It integrates three-stage overcurrent protection, two-stage earth fault protection, thermal overload, negative sequence and phase discontinuity protection, plus transformer inrush current restraint and auto-reclosing function. It works with conventional CTs or Rogowski coil sensors, equipped with local HMI, disturbance recording and event logging. Built for continuous stable operation inside MV switchgear cabinets, this unit addresses protection misoperation and monitoring loss caused by aged or faulty original relays. Manufactured to strict power industry standards and fully tested, it serves as a dependable replacement spare part for medium voltage distribution automation maintenance and fault repair.

Core Application Advantages

• Low Failure Rate Operation: Constructed with industrial-grade materials and circuitry, delivering strong stability and durability to cut recurring maintenance expenses.
• Fast Fault Recovery: Panel mounting design with withdrawable terminals enables quick installation and removal. Engineers can finish system repairs rapidly to minimize power outage losses.
• Wide System Compatibility: Fully compatible with original ABB Relion 605 series architecture. Supports Modbus and IEC 60870-5-103 for SCADA connection, no complex program adjustments needed after installation, bringing zero adaptation cost.

Typical Application Cases

• Industrial System Emergency Maintenance: Emergency replacement of faulty feeder protection relays in medium voltage distribution substations to restore overcurrent and earth fault protection rapidly.
• Long-term Spare Part Reserve: Kept as regular inventory for industrial plants and utility distribution stations, easing procurement bottlenecks and long lead times of original imported spare parts.
• Automation System Upgrade: Matches legacy switchgear during distribution network reconstruction and secondary substation renovation projects.