ABB 3BNP004429R1 CI547 Communication Module Board

ABB REJ603 | Numerical Relay for RMU & Secondary Distribution

ABB REJ603 | Numerical Relay for RMU & Secondary Distribution

Availability: 10 left in stock

Product Overview The ABB REJ603 (Part Number: 1VYV91248286) stands as a specialized numerical relay within the Relion® 605 series, engineered specifically for secondary...

SKU: REJ603

Manufacturer: ABB
Product No.: REJ603
Product Type: Feeder Protection Relays
Product Origin: USA
Payment:T/T, Western Union
Weight: 900g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The ABB REJ603 (Part Number: 1VYV91248286) stands as a specialized numerical relay within the Relion® 605 series, engineered specifically for secondary distribution switchgear and Ring Main Units (RMUs). This device utilizes a unique self-powered design, drawing operational energy directly from the feeder current transformers. By eliminating the dependency on external auxiliary power supplies, the REJ603 ensures reliable protection in remote or unmanned locations where battery maintenance is impractical. We offer this unit as 100% Brand New and Original for critical infrastructure deployment.

Technical Specifications

Feature	Details
Model	REJ603 (Relion® 605 Series)
Power Supply	Self-powered via Phase CTs (No external DC/AC needed)
Current Inputs	4 Channels (Selectable 1 A or 5 A)
Protection Stages	Low-set and High-set Overcurrent & Earth-fault
Output Contacts	Trip Contact & Alarm Contact
Fault Signaling	LED Indicators and Mechanical Trip Flag
Accuracy	Compliant with EN 60255-6 Standards
Operating Temp	–25°C to +55°C
Environmental	EMC Directive 2004/108/EC

Engineering Advantages

Zero-Maintenance Power Architecture: The REJ603 powers its internal electronics using the primary current through the CTs. This design removes the "single point of failure" associated with auxiliary battery banks and chargers, significantly reducing operational expenditure in rural or isolated grids.
Rapid Fault Signaling: Even in total darkness or power loss, the mechanical flag indicator provides a permanent visual record of a trip. This hardware-based signal assists field crews in identifying faulted sections immediately without needing to power up the relay's HMI.
Space-Efficient Integration: The compact housing fits perfectly into narrow RMU compartments. Its standardized mounting footprint allows for quick installation in both new panel builds and retrofitting projects where space is at a premium.
Deterministic Protection Performance: The unit employs two-stage non-directional overcurrent and earth-fault protection. These stages allow for precise grading with upstream and downstream devices, ensuring that only the faulted segment is isolated while maintaining power to the rest of the network.
Self-Supervision Intelligence: An internal watchdog continuously monitors the hardware and software integrity. If the relay detects an internal failure, it triggers an alarm, preventing "silent failures" that could leave a feeder unprotected.

FAQs

Does the ABB REJ603 require a minimum current to start up?

Yes. Since the unit is self-powered, it requires a minimum threshold current from the phase CTs to energize the electronics. However, the relay reaches operational readiness at very low load levels, ensuring protection is active long before a fault occurs.

Can I use the REJ603 with standard 1A or 5A Current Transformers?

The REJ603 supports both 1 A and 5 A secondary ratings. You must select the correct version or configure the inputs to match your specific CT ratios to ensure accurate measurement and trip timing.

How do I retrieve fault data if the feeder is de-energized?

The mechanical trip flag stays in the "tripped" position even after power is lost. For digital event logs, some versions support a temporary power interface or internal capacitor storage that allows engineers to extract data via the HMI or communication port after the event.

Is this unit compatible with IEC 61850?

The standard self-powered REJ603 focuses on autonomous protection. While higher-tier Relion models offer full IEC 61850 stacks, the REJ603 typically provides simplified signaling or optional HMI interfaces depending on the specific hardware variant (1VYV series).

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.