Product Details
Description
The ABB REJ603 REJ603BB401NN31E is a professional self‑powered feeder protection relay designed for distribution networks. It ensures dependable fault detection and secure operation without external power supply.
Specifications
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Manufacturer: ABB
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Model: REJ603
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Part Number: REJ603BB401NN31E
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Origin: Switzerland
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Function: Self-powered feeder protection relay
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Voltage Range: Suitable for medium-voltage distribution systems
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Power Supply: Self-powered from current transformers
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Communication: IEC 61850 compliant for substation automation
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Dimensions: 160 × 96 × 150 mm
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Weight: 0.9 kg
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Application: Distribution networks requiring reliable feeder protection
Features
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Self-powered operation: Eliminates need for external power supply
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Reliable fault detection: Provides dependable protection for feeders in distribution systems
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IEC 61850 support: Enables seamless communication in digital substations
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Compact design: Saves space in control panels while maintaining robust functionality
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Durable construction: Built for long-term use under demanding conditions
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Enhanced safety: Protects critical infrastructure and improves operational reliability
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Master Acceptance Testing: Understanding FAT and SAT in Industrial Control Systems
Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) serve as critical quality assurance gateways in complex industrial control systems. Both procedures verify that programmable logic controllers (PLCs), distributed control systems (DCS), and associated field devices meet strict functional specifications. However, executing these tests effectively requires clear delineation between off-site staging and final field commissioning.
Industrial Networking Essentials: Demystifying Hubs, Switches, and Routers in Control Systems
Industrial automation relies heavily on robust networking infrastructure to connect programmable logic controllers (PLCs), distributed control systems (DCS), and human-machine interfaces (HMIs). Modern factory automation environments generate vast amounts of real-time operational data across deterministic networks. Understanding the structural differences between hubs, switches, and routers ensures optimal traffic segmentation, minimizes latency, and maintains high network availability.
Safety Relays in Industrial Automation: Fundamentals, Design Standards, and Fail-Safe Architecture
Safety relays form the bedrock of functional safety in modern factory automation, preventing catastrophic equipment failure and protecting plant personnel. While standard electromechanical relays handle basic load switching, they lack the redundant diagnostics required for high-risk industrial environments. Modern industrial automation platforms—including programmable logic controllers (PLCs) and distributed control systems (DCS)—rely on specialized safety relays to monitor field devices and isolate hazards instantly.