ABB RELION REJ603
A self-powered protection relay for the protection of utility substations and industrial power distribution systems in secondary distribution.
ABB RELION REJ603
ABB Relion REJ603 leverages the same configuration software as all ABB Relion protection and control products. ABB’s protection relays are available for original equipment manufacturers (OEM), panel builders and Engineering, Procurement and Construction (EPCs) partners to incorporate in their own installations or for use in new, retrofit or upgrade projects.
PRODUCT SCOPE
REF601
- Feeder protection
- Current protection
- Bay control
- Transformer protection
- Line distance protection
- Line differential protection
- Motor protection
- Generator protection
- Busbar protection
- Capacitor bank protection
- Voltage protection
- Load-shedding
- Grid automation
- Petersen coil control
- Auto-synchronization
- Interconnection protection
- Arc flash protection
REJ603
- Feeder protection
- Current protection
- Bay control
- Transformer protection
- Line distance protection
- Line differential protection
- Motor protection
- Generator protection
- Busbar protection
- Capacitor bank protection
- Voltage protection
- Load-shedding
- Grid automation
- Petersen coil control
- Auto-synchronization
- Interconnection protection
- Arc flash protection
REX615
- Feeder protection
- Current protection
- Bay control
- Transformer protection
- Line distance protection
- Line differential protection
- Motor protection
- Generator protection
- Busbar protection
- Capacitor bank protection
- Voltage protection
- Load-shedding
- Grid automation
- Petersen coil control
- Auto-synchronization
- Interconnection protection
- Arc flash protection
CUSTOMER BENEFITS
Compact Design & Installation
<ul> <li>Simple and efficient with compact footprint </li> <li>Fixed hardware </li> <li>Easy wiring </li> </ul>Configuration & Commissioning
<ul> <li>Easy setup </li> <li>Speedy commissioning through selective test function for protection functions and binary output contacts including test trip to circuit breaker </li> </ul>Protection & Monitoring
<ul> <li>Essential protection </li> <li>Key functions covered </li> </ul>EXPLORE DIGITAL TOOLS & PRODUCT CONFIGURATORS
Relays-Online
Relays-Online
The digital platform that offers quick access to ABB protection relay tools, product data, technical documentation, and configuration services, streamlining selection, ordering, and support for Medium Voltage solutions.
- Relays-Online
- Partner Hub
- Virtual Training Center
- Tools filter
The ABB web portal that connects end users, customers, and partners to product information, configuration tools, training, and expert support, all in one place to simplify collaboration and accelerate projects. It provides a complete end-to-end self-service journey, from design to order placement.
EXPLORE OUR TOOLS
| Assignment | Application | Description |
|---|---|---|
| Product information | 3D eCatalogue | A visual tool that allows you to explore ABB medium-voltage switchgear in immersive 3D, configure solutions visually, and make informed decisions with instant access to technical details and application insights. |
| Product information | Learning | A digital platform that provides training materials, tutorials, and courses to help you build expertise in ABB products and solutions. Accessible resources support continuous learning, professional development, staying current with the latest innovations, and advancing your professional skills. |
| Configure a product | MV switchgear configurator | The product tool that enables you to create your single-line diagram (SLD), define switchgear configuration details, and instantly access comprehensive technical documentation, making project design and completion faster and more reliable. |
| Configure a product | MV devices configurator | The user-friendly online tool for selecting and configuring ABB Medium Voltage devices (circuit breakers, contactors, ...) with ease and accuracy, helping you customize solutions to fit your specific technical needs. |
| Configure a product | Relays Online | The digital platform that offers quick access to ABB protection relay tools, product data, technical documentation, and configuration services, streamlining selection, ordering, and support for Medium Voltage solutions. |
| Design network/BIM | DOCweb | The ABB online tool for designing electrical MV-LV networks faster and smarter, with real-time calculations, intelligent product selection, automated compliance checks, and instant generation of complete technical documentation, all in just a few clicks. |
| Design network/BIM | BIMagic | The design tool that simplifies the creation and management of Building Information Modeling (BIM) objects for ABB medium-voltage switchgear, streamlining project planning, integration, and ensuring compliance with industry standards. |
FREQUENTLY ASKED QUESTIONS
The REJ603 is a self-powered feeder protection relay designed for secondary distribution networks. It is typically used in utility substations, industrial power systems, ring main units (RMUs), and secondary switchgear to ensure reliable protection of feeders and transformers.
The REJ603 draws its operating power directly from current transformers (CTs), eliminating the need for an external auxiliary power supply. This makes it ideal for remote or unmanned installations where auxiliary power may not be available.
The relay provides essential protection functions including multi-stage overcurrent protection, earth-fault protection, transformer inrush detection, and thermal overload protection for feeders, cables, and transformers.
The REJ603 comes with pre-configured functionality, allowing for fast and straightforward commissioning. Only application-specific parameters need to be set, making it simple to deploy in both new and retrofit projects.
Yes. Its self-powered design and robust construction make it well suited for demanding environments, including unmanned substations and remote locations. It also operates reliably across a wide temperature range and environmental conditions.
Yes. The relay includes features such as disturbance recording, event logging, and clear visual indications via LEDs and flags. These capabilities help operators quickly analyze faults and improve network reliability.
REF601 is a feeder protection and control relay with communication capabilities, designed for applications where auxiliary power is available, and system integration is required. REJ603 is a self-powered feeder protection relay designed for remote or unmanned installations where auxiliary power is not available.
REJ603 is designed as an essential feeder protection solution with simple configuration and fast commissioning. For applications requiring greater flexibility, communication, and automation capabilities, ABB offers more advanced protection relays, such as REX615 and REX640.