Eaton BU-EAFR-110FB Arc Flash Relay Point Sensor - Fiber Loop
Part Number: BU-EAFR-110FB
Quick Summary
Arc Flash Relay Point Sensor detects fault currents and triggers protective actions in electrical switchgear, enabling rapid isolation of faults. Engineers often wrestle with nuisance trips and slow fault isolation that drive maintenance costs. Compliance details are provided by the manufacturer; this category typically targets CE marking and IP-rated enclosures, with SIL pathways available where required. By combining fiber loop sensing with fast-acting protection logic, the BU-EAFR-110FB improves personnel safety and asset protection while reducing downtime and coordination effort with existing relays. Applications span motor control centers, data centers, and hard-wired process lines, where compact form factor and multi-sensor capability support scalable protection architectures.
Product Information
Extended Description
BU-EAFR-110FB Eaton: Eaton arc flash relay point sensor, fiber loop sensor unit, 3PH and ground current detection, Max 3 fiber loop sensors, 2 high speed outputs, 4 Trip relays, NC trip contact, CURRENT,FIBER LOOP SENSOR UNIT
Product Name
Eaton arc flash relay point sensor
Catalog Number
BU-EAFR-110FB
UPC
051712748193
Product Length/Depth
6.46 in
Product Height
6.18 in
Product Width
3.23 in
Product Weight
2 lb
Compliances
Contact Manufacturer
Type
Arc flash relay
Feature fiber loop sensor unit supports 3PH and ground current detection. This enables precise fault sensing across feeders and reduces false trips, delivering measurable uptime improvements for critical equipment. Application: large switchgear and motor control centers benefit from faster fault isolation and safer operation. Business impact: enhanced protection with fewer nuisance trips and improved maintenance planning. Feature up to three fiber loop sensors in a single unit. This scalability allows monitoring of multiple feeder lines without added cabinets or external racks, reducing installation time and panel space. Application: plant-wide distribution networks and retrofit projects. Business impact: consolidated sensing reduces wiring complexity and total installed cost. Feature two high-speed outputs and four trip relays with an NC trip contact. This combination provides flexible control, fast disconnection, and seamless integration with existing protection schemes. Application: coordinated protection across MCCs and process lines. Business impact: stronger safety margins and easier scheme upgrades. Feature compact dimensions and a 2 lb weight. Installation is simpler in tight panels and retrofits, easing serviceability and reducing labor costs. Application: panel upgrades and new installations in space-constrained environments. Business impact: faster commissioning and lower lifecycle costs. Compliance note: confirm regional standards with the manufacturer to align with CE, SIL, or IP requirements as needed.
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FAQs
The BU-EAFR-110FB is designed for straightforward retrofits in standard switchgear and MCCs. Use the fiber loop sensors to monitor multiple feeders and connect the NC trip contact and high-speed outputs to your protection hierarchy. Verify panel space and ensure wiring complies with your local electrical codes; confirm that trip relays are coordinated with existing protective relays to avoid nuisance trips.
Key specs include 3PH and ground current detection, support for up to three fiber loop sensors, two high-speed outputs, four trip relays, and an NC trip contact. It is designed for fast fault detection and reliable disconnection, with a compact footprint suitable for crowded panels.
Yes. The device provides rapid fault sensing and flexible trip signaling ideal for MCC protection schemes. Its fiber loop flexibility allows multi-location sensing within MCC-based architectures, improving protection coordination and reducing downtime in motor-driven processes.
Compliance details for this model are provided by the manufacturer. Typical deployments in this class look for CE marking and IP-rated enclosures, with SIL pathways available per system requirements. Always confirm certifications with Eaton for your regional and safety requirements.
The combination of fiber loop sensing and fast protection reduces nuisance trips and accelerates fault isolation, lowering maintenance costs and downtime. Its compact form factor eases retrofit projects, shortening installation time and delivering a favorable return on investment through improved uptime and safer operations.