ABB REL551 1MRK002480-AE Protection Relay Module

Engineered for mission-critical power systems, the ABB REL551 1MRK002480-AE protection relay delivers precision monitoring and fault detection in industrial electrical networks. This module forms the backbone of protection strategies for transformers, motors, and distribution lines where downtime risks are unacceptable.

Technical Specifications

What sets this relay apart is its dual-core processor architecture enabling simultaneous protection and communication tasks. Field tests in chemical processing plants showed 99.98% accuracy in detecting phase imbalances during voltage sags – a critical factor preventing motor burnouts.

Industrial Applications

Commonly deployed in:

• Substation automation systems
• Oil & gas pipeline monitoring
• Steel mill power distribution
• Renewable energy grid connections

We regularly support customers with related components including ABB’s AC10272001R0101 control modules and 5SHY6545L0001 thyristor units. A recent client in Saudi Arabia implemented this relay alongside our DSQC series robot spares for integrated plant protection.

Our Service Commitment

All our protection relays come with a 12-month performance guarantee – one of the longest in the industry. With 16 regional warehouses and real-time inventory tracking, we typically deliver within 72 hours of order confirmation. For urgent requirements, contact our technical support team via:

• WhatsApp: +86 190-6659-1275
• Email: abbocs36@gmail.com

“We’ve been using these relays in our offshore platforms since 2018. The only maintenance needed was periodic firmware updates – exactly what you want in harsh environments.” – Maintenance Manager, Norwegian Energy Co.