Description
The ABB RED521 (Part Number: 1MRK002003-BA) is a specialized microprocessor-based line differential protection relay designed for high-integrity power transmission and distribution network security. Engineered to provide selective and high-speed fault clearance, this intelligent electronic device (IED) protects overhead lines and cable feeders against complex multi-phase and earth faults.
Integrating advanced digital communication capabilities and precise internal synchronization, the RED521 series ensures robust performance across extensive power grids. It serves as an essential protection and control module for maintaining electrical system stability, safeguarding heavy-duty utility assets, and minimizing widespread outage durations in demanding industrial and substation environments.
Product Parameters & Datasheet
- 🔹 Brand: ABB
- 🔹 Model: RED521 (1MRK002003-BA)
- 🔹 Series: RED500 Protection and Control Series
- 🔹 Product Name: Line Differential Protection Relay
- 🔹 Country of Origin: Sweden / Finland
- 🔹 Product Condition: Industrial Power Automation Component (New / Certified Refurbished)
- 🔹 Dimensions: Standard Substation Flush-Mount Modular Form Factor
- 🔹 Weight: Approx. 3.2 kg
- 🔹 Origin Region: European Manufacturing Standard
- 🔹 Power Rating: Auxiliary Control Voltage 48-250 VDC / 110-240 VAC
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One year warranty, special discount after sale
The company focuses on DCS, PLC, robot, large servo four systems
The main products are all kinds of module/card, controller, touch screen, servo drive
The company's advantages: the supply of imported original products, professional production of accessories
Fast delivery time, complete supply, The seller has more than $1526000 worth of industrial control products inventory
We Can transport to the world！！！
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[service contact information]
Purchase and consultation hotline: +8613365909307 (Whatsapp/ Wechat)
E-mail: dcsplcsales@gmail.com
Contact Person: Simon
① 24-hour email reply (12 hours);
② For shipment to countries outside Asia, please contact the seller.
Main brands include: ABB, Bailey, GE, FOXBORO, Invensys TRICONEX, Bentley BENTLY, A-B Rockwell, EMERSON EMERSON, B&R, MOTOROLA, FUANC, REXROTH, KUKA, HONEYWELL, NI, DEIF, Yokogawa, WOODWARD WOODWARD, Ryan, SCHNEIDER SCHNEIDER, Yaskawa, MOOG, EPRO, PROSOFT and other major brands
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E-mail:dcsplcsales@gmail.com
Wechat:+86 13365909307
Phone:+86 13365909307