REA101
PublishedArc Fault Protection Relay
ABBElectrical & LightingRelayIndustrial supply
ABB REA101 arc fault protection relay for medium- and low-voltage switchgear. Detects arc faults via fiber-optic sensors with trip signals within 2.5 ms. RS-485 Modbus RTU; -25C to +70C.
Wholesale supplyREA101
No public pricingPriced per agreement on volume and market. Send your quantities — Kaysan replies with availability and wholesale terms.
Product identity6 fields
Item nameArc Fault Protection Relay
Item number / codeREA101
BrandABB
Product lineIndustrial supply
CategoryElectrical & Lighting
Product typeRelay
Technical data14 rows
ModelREA101
Rated voltage110/120/220/240 V AC or 110/125/220/250 V DC Control Current
Voltage240 V
Built-In Fault IndicatorsEnables fast fault localization and guided maintenance
CertificationsCE, UL, cUL, IEC 61508 SIL2
Communication InterfaceRS-485 (Modbus RTU), hardwired contact outputs for multiple trip signals
Control CurrentAdjustable from 1.5 mA to 20 mA
Detection MethodFiber-optic sensor-based arc-flash detection (AFD), optionally linked with overcurrent signals
High-Speed Arc DetectionDetects arc faults within 2.5 ms using fiber-optic sensors
Hot-Swappable DesignSupports maintenance without system shutdown
Industrial ReliabilityDesigned for harsh environments and critical safety applications
InstallationDIN rail or panel mounting
Multi-Protocol CommunicationRS-485 interface with Modbus RTU for integration with DCS/SCADA systems
Operating Temperature−25°C to +70°C
Reference numbers1 public
ABBREA101