1 5

REX521 | ABB Feeder Protection Relay

REX521 | ABB Feeder Protection Relay

  • Manufacturer: ABB

  • Product No.: REX521

  • Condition:1000 in stock

  • Product Type: Feeder Protection Relay

  • Product Origin: Switzerland

  • Payment: T/T, Western Union

  • Weight: 1000g

  • Shipping port: Xiamen

  • Warranty: 12 months

  • 24/7 Support
  • 30-Day Returns
  • Fast Shipping

Product Details



Parameter Details
Manufacturer ABB
Model/Part Number REX521
Description Feeder Protection Relay

Product Overview



Parameter Details
Part Number REX521
Product Name REX521 Feeder Protection Relay
Application Protection, control, measuring, and supervision in medium voltage distribution networks
Compatibility Integrates with ABB Relion series and substation automation systems
Function Provides comprehensive feeder protection including overcurrent, earth fault, and short-circuit detection

Functional Specifications



Parameter Details
Protection Functions Overcurrent (50/51), earth fault (50N/51N), short-circuit, thermal overload (49)
Measurement Capabilities Current, voltage, power, frequency; supports three-phase and residual current measurement
Binary Inputs/Outputs Up to 16 binary inputs, 10 output contacts (configurable)
Communication Interfaces Rear serial port (RS-485, SPA, Modbus RTU), front USB for configuration; optional Ethernet
Power Supply 24-265 V AC/DC or 48-265 V DC options
Operating Temperature Range -25°C to +55°C
Dimensions 177 mm x 177 mm x 144 mm (4U 19" rack mount)
Mounting 19" rack or panel mount
Protection Rating IP54 front panel
Standards Compliance IEC 60255, ANSI/IEEE C37.2, CE, UL, CSA
View full details

Product Description

Product Details



Parameter Details
Manufacturer ABB
Model/Part Number REX521
Description Feeder Protection Relay

Product Overview



Parameter Details
Part Number REX521
Product Name REX521 Feeder Protection Relay
Application Protection, control, measuring, and supervision in medium voltage distribution networks
Compatibility Integrates with ABB Relion series and substation automation systems
Function Provides comprehensive feeder protection including overcurrent, earth fault, and short-circuit detection

Functional Specifications



Parameter Details
Protection Functions Overcurrent (50/51), earth fault (50N/51N), short-circuit, thermal overload (49)
Measurement Capabilities Current, voltage, power, frequency; supports three-phase and residual current measurement
Binary Inputs/Outputs Up to 16 binary inputs, 10 output contacts (configurable)
Communication Interfaces Rear serial port (RS-485, SPA, Modbus RTU), front USB for configuration; optional Ethernet
Power Supply 24-265 V AC/DC or 48-265 V DC options
Operating Temperature Range -25°C to +55°C
Dimensions 177 mm x 177 mm x 144 mm (4U 19" rack mount)
Mounting 19" rack or panel mount
Protection Rating IP54 front panel
Standards Compliance IEC 60255, ANSI/IEEE C37.2, CE, UL, CSA

Tags:

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)