Eaton BU-EAFR-110PB Arc Flash Relay Point Sensor - 3PH
Part Number: BU-EAFR-110PB
Quick Summary
Eaton arc flash relay point sensor BU-EAFR-110PB provides rapid fault detection and trip control in three-phase power systems for industrial machinery and processes. This solution helps reduce arc energy exposure and improve operator safety by delivering fast, reliable sensing and actuation. While detailed certifications should be confirmed with the manufacturer, many Eaton devices in this category support industry standards such as CE and SIL-grade safety practices, with IP-rated housing options available through Eaton's broader protection portfolio. By integrating with existing protection schemes, this unit simplifies compliance while delivering measurable business value through reduced downtime and safer maintenance windows. The BU-EAFR-110PB also supports scalable protection strategies for modern plants, aligning arc fault protection with lifecycle costs and reliability targets.
Product Information
Extended Description
BU-EAFR-110PB Eaton: Eaton arc flash relay point sensor, point sensor unit, 3PH and ground current detection, Max 12 point sensors, 2 high speed outputs, 4 Trip relays, NC trip contact, FIBER LOOP SENSOR UNIT, NC TRIP RELAY
Product Name
Eaton arc flash relay point sensor
Catalog Number
BU-EAFR-110PB
UPC
051712748254
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 → Business Impact → Application: 3PH and ground current detection enables fast arc fault identification, reducing fault clearance time and minimizing secondary damage in switchgear and MCCs. This delivers tangible safety improvements and uptime gains for critical lines. Application: motor control centers, switchgear assemblies, and panel boards where space is at a premium and quick fault isolation is essential. Feature → Business Impact → Application: Max 12 point sensors support scalable protection schemes, allowing phased expansion without replacing existing hardware. This lowers total cost of ownership and simplifies diagonal protection configurations. Application: large panel installations and multi-bus environments with evolving protection requirements. Feature → Business Impact → Application: 2 high-speed outputs and 4 trip relays provide flexible interlock and signaling options, enabling precise trip logic and clear separation between protection layers. Application: integrated protection networks with NC trip contacts and fiber loop sensor unit for reliable data integrity. Feature → Business Impact → Application: NC trip contact and fiber loop sensor unit improve fault localization accuracy and reduce nuisance trips, especially in noisy electrical environments. Application: dense industrial facilities, robotic lines, and high-harmonic systems. Feature → Business Impact → Application: Compact form factor and DIN-rail friendly packaging streamline installation, reducing commissioning time and improving serviceability in retrofit projects. Application: modernization programs and new builds alike. Feature → Business Impact → Application: Compliances and manufacturer guidance ensure alignment with safety expectations; while specifics must be confirmed, Eaton’s portfolio supports rigorous protection philosophies. Application: plant-wide safety upgrades and retrofits to existing arc protection schemes.
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FAQs
The BU-EAFR-110PB is designed to integrate with three-phase protection architectures. Connect it to the protected feeders using the NC trip contact and the fiber loop sensor unit for enhanced fault data. It supports up to 12 point sensors, enabling scalable protection without replacing core hardware. Always verify wiring diagrams and ensure compatibility with your current arc protection relay logic and control circuits.
The device combines 3PH and ground current detection with high-speed outputs and multiple trip relays, delivering fast fault isolation for switchgear and MCCs. Its fiber loop sensor unit enhances data integrity in electrically noisy environments, while the NC trip contact allows flexible interlocks. This makes it particularly effective in critical manufacturing lines and power-intensive equipment.
The BU-EAFR-110PB supports up to 12 point sensors, enabling you to scale protection across larger assemblies or future expansions without hardware replacement. This supports modular protection schemes for growing facilities and helps maintain consistent arc-flash protection coverage as system complexity increases.
Compliances listed for this unit indicate 'Contact Manufacturer' for specifics. While many Eaton protection products align with CE and SIL safety practices, always confirm current certifications with Eaton or your authorized distributor to ensure they meet your facility's regulatory and safety requirements.
By enabling rapid arc fault detection and reducing nuisance trips, the BU-EAFR-110PB lowers unplanned downtime and improves operator safety. The combination of scalable protection, reliable data from the fiber loop sensor, and flexible trip logic translates to shorter maintenance windows, lower repair costs, and longer equipment life in high-demand production environments.