Eaton BU-EAFR-101DB Arc Flash Relay - DIN Rail
Part Number: BU-EAFR-101DB
Quick Summary
The Eaton arc flash relay BU-EAFR-101DB is a point sensor solution for arc flash protection in control panels. Designers often struggle with coordinating multiple sensors and delivering fast, coordinated trips across a panel, which can slow startups and increase risk. This unit supports DIN rail mounting and can scale to 12 point sensors with four trip relays, offering reliable protection and simplified wiring. In practice, predictive safety and compliance considerations include CE-related indicators and SIL safety integration, with exact certifications to be confirmed with Eaton. For procurement teams, the compact footprint and clear diagnostics translate into lower installation costs while preserving system safety. Secondary benefits include reduced maintenance cycles and improved uptime in industrial electrical protection schemes.
Product Information
Extended Description
BU-EAFR-101DB Eaton: Eaton arc flash relay point sensor, Point sensor unit, Max 12 point sensors, 4 Trip relays, DIN rail mounted, NC trip contact, CURRENT, POINT SENSOR UNIT
Product Name
Eaton arc flash relay point sensor
Catalog Number
BU-EAFR-101DB
UPC
051712748230
Product Length/Depth
1.34 in
Product Height
4.33 in
Product Width
5.71 in
Product Weight
1 lb
Compliances
Contact Manufacturer
Type
Arc flash relay
Feature: Up to 12 point sensors supported → Business Impact: Scales protection across larger panel footprints without adding complexity → Application: Control panels and MCCs where distributed sensing is required. Feature: Four trip relays and an NC trip contact → Business Impact: Enables fast, coordinated tripping and safe isolation of faults → Application: Arc flash protection for motor control centers and switchgear. Feature: DIN rail mounting → Business Impact: Quick installation with minimal panel space usage → Application: Standard electrical panels in industrial environments. Feature: Compact dimensions (1.34 in depth, 4.33 in height, 5.71 in width) and 1 lb weight → Business Impact: Space-efficient integration with easy maintenance → Application: Retrofit projects and new builds with strict footprint constraints. Feature: Clear product identity (BU-EAFR-101DB, UPC 051712748230) → Business Impact: Streamlined procurement and traceability → Application: Vendor-specific inventory and BOM documentation. Feature: Compliances: Contact Manufacturer → Business Impact: Verify regional certifications and meet site-specific safety requirements → Application: Industries with regulatory or customer compliance needs.
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FAQs
The BU-EAFR-101DB is designed for standard DIN-rail mounting, enabling fast integration into typical control panels. It supports up to 12 point sensors and multiple trip relays, which simplifies wiring and reduces cabinet footprint. When combining with existing Eaton point sensors, verify rail size and bus configurations to ensure clean, scalable installations without cross-talk or wiring congestion.
The device provides four independent trip relays with a normally closed (NC) contact configuration, enabling rapid isolation of arc faults. Typical response times are dictated by the relay logic and sensor inputs, offering swift fault clearance to protect personnel and equipment. For mission-critical panels, plan for testing sequences to validate relay coordination across all connected sensors.
Yes, BU-EAFR-101DB is intended for arc flash protection in control panels, MCCs, and switchgear environments. Its DIN-rail mounted point sensor architecture supports distributed sensing across up to 12 points, allowing localized fault detection and immediate isolation. In these settings, ensure proper wiring discipline, voltage levels, and compatibility with other protection devices for coordinated protection schemes.
Compliances are noted as Contact Manufacturer for BU-EAFR-101DB. In practice, customers should confirm CE marking, SIL-related safety integration, and any region-specific certifications with Eaton prior to deployment. This ensures the unit meets local regulatory requirements and integrates seamlessly with existing safety architectures in your facility.
The BU-EAFR-101DB reduces maintenance intervals by delivering reliable arc flash protection and easier diagnostic access through a compact form factor. With up to 12 sensing points and four trip relays, it lowers the risk of unplanned outages and shortens fault isolation times, contributing to lower downtime costs and a faster return on investment in safety-critical circuits.