ABB REF543KM129AAAB

ABB REF543KM129AAAB feeder protection relay

The ABB REF543 is a feeder protection relay from the REF 54x series, designed for medium-voltage distribution networks.

 

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·Tel: + 86-13806028623
·Whatsapp:+86-13806028623
·Email: x13806028623@gmail.com
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·Tel: + 86-13806028623

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Description

ABB REF543KM129AAAB

The ABB REF543 is a feeder protection relay from the REF 54x series, designed for medium-voltage distribution networks. Below are the key technical parameters for the REF543KM129AAAB variant:

General Specifications:

  • Model: REF543 (KM129AAAB denotes specific hardware/software configuration)
  • Application: Feeder protection, motor protection, and transformer protection
  • Housing: Standard 19-inch rack or panel mounting (IP40/IP52)

Electrical Parameters:

  • Rated Voltage (Auxiliary Supply):
    • DC: 24–250 V
    • AC: 48–250 V
  • Current Inputs:
    • Rated Current (Iₙ): 1 A or 5 A (configurable)
    • Thermal Withstand: 4× Iₙ continuously, 100× Iₙ for 1s
  • Frequency: 50/60 Hz

Protection Functions:

  • Overcurrent Protection (50/51, 50N/51N, 50G/51G)
  • Directional Overcurrent (67, 67N)
  • Earth Fault Protection (50EF/51EF, 67N)
  • Thermal Overload Protection (49)
  • Motor Protection (46, 49, 66) (if applicable)
  • Autoreclosing (79) (optional)

Communication & I/O:

  • Communication Protocols:
    • IEC 61850, Modbus RTU/TCP, DNP3, IEC 60870-5-103
  • Binary Inputs: Up to 14 (programmable)
  • Binary Outputs: Up to 10 (relay contacts)
  • Ethernet Ports: 2× (for IEC 61850 & SCADA)

Environmental & Mechanical:

  • Operating Temperature: -25°C to +60°C
  • Ingress Protection: IP40 (standard), IP52 (optional)
  • Mounting: 19-inch rack or panel

Main Brand:

ABB        Allen-Bradley       Alstom       Bently       Emerson        Foxboro

GE           Schneider              MOOG         HIMA          Woodward    Honeywell 

 

First hand source, affordable price. Spot inventory!

.Sales Director:Tara
·Tel: + 86-13806028623
·Whatsapp:+86-13806028623
·Email: x13806028623@gmail.com
·Ship to you via DHL/TNT/UPS/EMS/Fedex

3BHE014070R0101 PPC905AE101     3BHE006412R0101 UFC762AE101       3BE021083R101 XVC770BE101  
3BHE0070R0101 XVC768AE101       3BHE005555R0101 LDSYN-101        3BHB006621R0103 UAC375AE103 
3BHB007211R0101 XVC768AE101      3BHB007211R0117 XVC768AE117       3BHE006373R0101 XVC769AE101

High-Availability Parts Database (Top Demand Models)

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2. Programmable Logic Controller (PLC) Fast-Moving Parts

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├─ Allen-Bradley Top Models
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└─ IS220UCSAH1A (Turbine Control Dedicated ｜ With Dynamic Calibration Report)

3. Turbine Supervisory Instrumentation (TSI) Core Sensors

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├─ Bently Nevada 3500 System
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└─ MMS6312 (Vibration/Temperature Combo ｜ IP67 Rated)

About Us

Xingchuang Ronghe (Fuzhou) Electrical Equipment Co., Ltd. is a professional company specializing in international trade. We have rich industry experience and extensive customer resources, and can provide personalized trade solutions for customers.

Our advantages are mainly reflected in the following aspects:

  1. Product diversification: We represent a wide range of products that can meet the needs of different customers.
  2. Service specialization: We have a professional team that can provide customers with comprehensive services.
  3. Diversified channels: We have established long-term and stable cooperative relationships with multiple domestic and foreign enterprises, and can provide customers with various trade channels.
  4. Price advantage: By optimizing the supply chain and reducing costs, we are able to provide customers with competitive prices.

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