ABB REM610C55HCNN02 – High-Performance Motor Protection Relay for Industrial Applications

If you’re managing medium-voltage motor protection in demanding environments—like a pulp and paper plant or a mining operation—this relay tends to stand out. The ABB REM610C55HCNN02 is part of ABB’s well-regarded Relion® 610 series, designed specifically for protecting three-phase motors from electrical faults and mechanical stress. From my experience, it’s the kind of device that quietly does its job for years, only drawing attention when it prevents an unplanned shutdown.

Key Features

• Comprehensive motor protection: Offers overcurrent, thermal overload, stall, unbalance, earth fault, and underpower protection—typical for critical motors where downtime costs thousands per hour.
• Integrated I/O and communication: Comes with built-in digital inputs/outputs and supports IEC 61850 GOOSE messaging, which simplifies integration into modern substations without requiring extra hardware.
• Front-facing HMI: The large LCD screen with navigation keys makes local monitoring and troubleshooting easier, especially during commissioning or maintenance rounds.
• Modular design: You might notice that field upgrades are simpler than older models—additional I/O or communication modules can be added later if needs evolve.
• Dual Ethernet ports: Supports ring topology via IEC 61850-9-2 Sampled Values and GOOSE, improving network resilience in industrial networks.

Technical Specifications

Application Fields

This unit is typically found protecting motors between 1 MW and 10 MW—think large pumps, compressors, or conveyor drives in industries like oil & gas, water treatment, and heavy manufacturing. One customer in a cement plant told us they replaced legacy relays with the REM610 across six kiln drives and saw a noticeable drop in nuisance trips after tuning the thermal model correctly. It also integrates cleanly into SCADA systems using IEC 61850, which matters if you’re upgrading legacy infrastructure.

Advantages & Value

In many cases, buyers don’t realize how much long-term value lies in consistent protection logic and firmware support. ABB keeps this platform updated, so you’re not stuck with obsolete code five years down the line. Compatibility with existing switchgear designs means less engineering time during retrofits. Plus, having dual Ethernet ports reduces dependency on external switches—cutting both cost and failure points.

Procurement teams tend to appreciate the global service network too. Even if your site is remote, spare parts and technical assistance are usually within reach.

Installation & Maintenance

Install in a clean, ventilated switchgear cabinet meeting IP54 standards. Avoid direct sunlight or heat sources—especially since internal components generate some warmth under continuous load. Make sure CT wiring is properly shielded and grounded to prevent noise interference, which could skew measurements.

For maintenance, schedule annual visual inspections and cleaning of ventilation slots. Firmware updates should be applied cautiously—test them offline first. Calibration checks every 2–3 years are recommended, though actual intervals depend on operational severity.

Quality & Certifications

Certified to major international standards: CE marked, UL listed (File No. E137617), compliant with IEC 60255 series for protection relays, and RoHS directive 2011/65/EU. ISO 9001 applies to ABB’s manufacturing process, ensuring traceability and consistency.

Our warranty covers 365 days from shipment date. Units must be installed per manual guidelines to remain valid. No cosmetic damage or unauthorized modifications.

Ordering & Delivery

Most units ship within one week if in stock. Maximum lead time won’t exceed four weeks—even for configured variants. We accept FedEx, UPS, or DHL for express delivery. Payment terms are 50% upfront, balance before dispatch. Full documentation package included with each order.