Description
ABB REX521GHHPSH50G 291117
Reliable and proven ABB REX521 multi-function protection relay for medium voltage feeder applications, refurbished and tested for immediate deployment in substation and industrial power systems.
| Brand | ABB |
| Model | REX521GHHPSH50G 291117 |
| Voltage | 110-240V AC/DC auxiliary supply |
| Country of Origin | Sweden |
| Weight | 3.5 kg |
| Dimensions | 220 x 175 x 235 mm |
| Warranty | 12 months (used unit) |
| Certifications | CE, IEC 60255, IEEE C37.90 |
| SKU / MPN | REX521GHHPSH50G 291117 |
| What’s in the box | REX521 protection relay unit, mounting hardware, terminal blocks, user documentation CD |
| Relay Type | Numerical Feeder Protection Relay |
| Protection Functions | Overcurrent, Earth Fault, Distance, Thermal, Breaker Failure |
| Communication | IEC 61850, Modbus, DNP3, SPA, LON |
| Analog Inputs | 4 current + 4 voltage channels |
| Binary Inputs/Outputs | Configurable BI/BO with programmable logic |
| Display | Integrated HMI LCD with keypad |
Key benefits: Multi-function protection in one unit, IEC 61850 communication, proven field reliability, flexible configuration, cost-effective used alternative, easy integration into existing SCADA systems
Typical applications: Medium voltage feeder protection, transformer differential backup, motor protection, substation automation, industrial power distribution, generator protection auxiliary
Lifecycle: Mature legacy product, ABB supports with spares and firmware updates, widely deployed in installations since early 2000s
Our Advantages
Exact match for many brands
We make replacements easy with an exact match for almost any brand.
We use OEM catalogs to match your part number
Don't worry about ordering the wrong part by matching your part number with our OEM catalogs.
Competitively priced
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Orders usually ship the same day
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Individually inspected
Before any package is shipped we carefully inspect every product to ensure quality.
Guaranteed for one full year
All of our New Surplus and Reconditioned products come with a 1 year warranty.
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Susan Y. –
The variable frequency drive was calibrated easily. Works like a charm.