Eaton BU-EAFR-101-B Arc Flash Relay Point Sensor - 18-72VDC
Part Number: BU-EAFR-101-B
Quick Summary
Eaton arc flash relay point sensor BU-EAFR-101-B delivers rapid arc flash detection for electrical protection in switchgear and control panels. This solution helps reduce nuisance trips and unplanned downtime by providing fast, reliable sensing integrated with Eaton protection systems. Compliances are to be confirmed with the manufacturer, and buyers should verify region-specific standards such as CE, UL, or IP ratings where applicable. By leveraging a compact, DC-powered sensor within Electrical Protection & Circuit Control ecosystems, the BU-EAFR-101-B supports scalable protection while simplifying procurement and field installation for engineering teams.
Product Information
Extended Description
BU-EAFR-101-B Eaton: Eaton arc flash relay point sensor, EAFR, 18-72VDC power
Product Name
Eaton arc flash relay point sensor
Catalog Number
BU-EAFR-101-B
UPC
051712748179
Product Length/Depth
6.89 in
Product Height
6.18 in
Product Width
1.85 in
Product Weight
1 lb
Compliances
Contact Manufacturer
Type
Arc flash relay
Feature → Business Impact → Application: Wide DC power input range of 18-72 VDC simplifies integration with existing control circuits and reduces the need for power conversion, delivering quicker commissioning and lower project risk in new or retrofit panels. This translates to reduced installation time and lower total cost of ownership for arc flash protection in industrial facilities. Application: control panels, motor control centers, and switchgear where DC sensing is preferred. Feature → Business Impact → Application: Compact form factor with a length of 6.89 in, height of 6.18 in, and width of 1.85 in plus a 1 lb weight enables dense panel layouts and easier installation in crowded electrical rooms, boosting maintenance efficiency and reducing space costs. Application: space-constrained electrical cabinets and retrofit projects. Feature → Business Impact → Application: Arc flash relay functionality that detects arcing faults and provides rapid signaling for protective actions, improving safety, trip coordination, and equipment longevity. Application: protective relays and interlock-enabled safety schemes in high-energy systems. Feature → Business Impact → Application: Clear product identity with catalog BU-EAFR-101-B and standard UPC for streamlined procurement, asset tracking, and warranty support, minimizing procurement cycles. Application: OEM and system integrator environments requiring traceable parts. Feature → Business Impact → Application: Defined product category and delivery program (Arc flash relay) ensures straightforward compatibility with Eaton protection ecosystems, enabling faster implementation and reduced engineering risk. Application: integration into existing Eaton architectures for consistent protection across facilities. Feature → Business Impact → Application: Compliance considerations requiring confirmation with the manufacturer to meet regional standards; proactive validation avoids compliance delays and rework. Application: global deployments requiring regional certification alignment.
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FAQs
Installation involves mounting the BU-EAFR-101-B within the electrical cabinet and wiring the device to your DC control circuit using the 18-72VDC power input. Ensure the relay is accessible for maintenance and that the wiring complies with local electrical codes. Refer to Eaton’s specification sheet for terminal assignments and mounting guidelines to minimize installation risk.
Key specs include a 18-72VDC power supply range, catalog number BU-EAFR-101-B, and a 6.89 in L × 6.18 in H × 1.85 in W footprint with ~1 lb weight. The device is categorized as an arc flash relay, suitable for protection and signaling in electrical protection circuits.
Yes, the BU-EAFR-101-B is designed as an arc flash relay within Eaton’s protection ecosystem. For best results, confirm specific interlock and signaling compatibility with your current Eaton devices and ensure the installation follows Eaton’s integration guidelines to maintain system coordination.
Certification details are listed as ‘Compliances: Contact Manufacturer’ for this model. Prior to procurement, verify with Eaton whether CE, UL, IP ratings, or regional certifications apply to your installation site to ensure full regulatory alignment and avoid compliance delays.
The BU-EAFR-101-B reduces downtime by enabling faster arc fault detection and isolation, which lowers maintenance costs and potential equipment damage. Its compact footprint and DC power compatibility streamline installation, reducing labor time and project risk, contributing to a faster payback on arc flash protection investments.