ABB
ABB REA 101 Fault Protection Relay
In stock, ready to ship
Manufacturer: ABB
Product No.: REA 101
Product Type: Fault Protection Relay
Product Origin: USA
Payment: T/T
Weight: 760g
Shipping port: Xiamen
Warranty: 12 months
Yes, we provide a 30-day money-back guarantee for all purchases.
Yes, all items come with a 12-month warranty from the date of shipment.
The ABB REA101 is a high-speed, flexible fault protection relay designed for medium- and low-voltage switchgear. It detects arc faults using fiber-optic sensors and issues trip signals in less than 2.5 milliseconds. This rapid response minimizes equipment damage and protects personnel, ensuring safety and reliability in industrial electrical systems.
Key Features
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Detects arc faults within 2.5 ms using fiber-optic sensors
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Supports dual-channel redundancy to eliminate single points of failure
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Communicates via RS-485 with Modbus RTU for DCS/SCADA integration
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Expandable with REA103, REA105, and REA107 extension modules
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Built-in fault indicators aid quick fault localization and maintenance
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Hot-swappable design allows maintenance without downtime
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IP30 rated for cabinet installation in harsh environments
Technical Specifications
| Specification | Detail |
|---|---|
| Manufacturer | ABB |
| Model Number | REA101 |
| Product Type | Fault Protection Relay |
| Rated Voltage | 110/120/220/240 V AC or 110/125/220/250 V DC |
| Control Current Range | Adjustable 1.5 mA to 20 mA |
| Operation Time | ≤ 2.5 ms (arc detection to trip signal) |
| Detection Method | Fiber-optic sensor-based arc-flash detection |
| Communication Interface | RS-485 (Modbus RTU), hardwired contact outputs |
| Operating Temperature | −25°C to +70°C |
| Protection Rating | IP30 (cabinet installation) |
| Certifications | CE, UL, cUL, IEC 61508 SIL2 |
| Mounting Options | DIN rail or panel mounting |
| Compatibility | Works with REA103, REA105, REA107 extension modules |