REF620E_F NBFNAAAANDC1BNN1XF | Feeder Protection Relay

Product Model REF620E_F (Order Code: NBFNAAAANDC1BNN1XF)
Manufacturer ABB
Product Type Feeder Protection Relay
Rated Voltage 24-48 V DC / 48-125 V DC
Protection Functions Overcurrent, Earth Fault, Thermal Overload, Breaker Failure
Measurement Accuracy ±0.5% for current/voltage
Communication Protocols IEC 61850, IEC 60870-5-103, Modbus RTU/TCP
Digital Inputs/Outputs 12 DI / 8 DO (Configurable)
Fault Recording 128 Disturbance Records (COMTRADE)
Operating Temperature -40°C to +70°C
Mounting DIN-rail or panel mount
Display Graphic LCD with multilingual interface
Certification IEC 60255, UL, CE, KEMA
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Description

ABB REF620 Feeder Protection Relay REF620E_F NBFNAAAANDC1BNN1XF

Product Model REF620E_F (Order Code: NBFNAAAANDC1BNN1XF)
Manufacturer ABB
Product Type Feeder Protection Relay
Rated Voltage 24-48 V DC / 48-125 V DC
Protection Functions Overcurrent, Earth Fault, Thermal Overload, Breaker Failure
Measurement Accuracy ±0.5% for current/voltage
Communication Protocols IEC 61850, IEC 60870-5-103, Modbus RTU/TCP
Digital Inputs/Outputs 12 DI / 8 DO (Configurable)
Fault Recording 128 Disturbance Records (COMTRADE)
Operating Temperature -40°C to +70°C
Mounting DIN-rail or panel mount
Display Graphic LCD with multilingual interface
Certification IEC 60255, UL, CE, KEMA

Main Features and Advantages

Advanced Feeder Protection: The ABB REF620E_F delivers comprehensive protection with adaptive overcurrent characteristics, directional earth fault detection, and thermal overload protection. Its high-speed algorithms provide fault detection within 1.5 cycles, minimizing equipment damage during electrical faults.

Intelligent Load Management: With ±0.5% measurement accuracy, this relay monitors energy consumption, power quality parameters, and load profiles. The thermal overload protection continuously calculates motor/cable heating based on actual current and ambient temperature, preventing insulation damage.

REF620

Seamless System Integration: Native support for IEC 61850 enables direct compatibility with modern substation automation systems. The REF620E_F also communicates via legacy protocols (DNP3, Modbus), facilitating integration without infrastructure upgrades.

Robust Industrial Design: Engineered for harsh environments, this relay operates reliably across extreme temperatures (-40°C to +70°C) and features enhanced EMI immunity. The compact design saves panel space while maintaining full functionality.

Application Areas

Essential for industrial feeder protection in manufacturing plants, water treatment facilities, and distribution networks. Ideal for motor protection circuits, bus tie applications, and renewable energy integration where reliable fault detection and isolation are critical.

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HONG KONG SAUL ELECTRICAL LIMITED. – Protection Specialists

Since 2011, we’ve provided premium protection solutions with expert technical support. Contact our protection engineers via WhatsApp for configuration templates and system integration guidance.

Every REF620E_F NBFNAAAANDC1BNN1XF includes:

  1. 1-year comprehensive warranty with firmware updates
  2. Application-specific configuration files
  3. Startup assistance documentation

Custom protection solutions available:
Email: sales@saulcontrol.com
Phone: +86 18150899970
Technical Support: +86 180 5988 4797 via WhatsApp

Please contact Sunny sales@xiongbagk.cn for the best price.

➱ sales manager: Sunny
➱ email mailto: sales@xiongbagk.cn
➱ Skype/WeChat: 18059884797
➱ phone/Whatsapp: + 86 18059884797
➱ QQ: 3095989363
➱ Website:www.sauldcs.com

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