Eaton EAFR-102B Arc Flash Relay - UL Recognized
Part Number: EAFR-102B
Quick Summary
The arc flash relay from Eaton, EAFR-102B, provides rapid protection for electrical panels against arc faults. Too many plants struggle with unpredictable arc events that jeopardize operator safety, damage equipment, and extend downtime. This device carries UL Recognized and cUL Recognized certifications, ensuring safety compliance and reliable performance. By combining fiber loop sensing with four trip relays and light sensing inputs, it delivers precise protection and fast isolation, reducing exposure and downtime. With panel mounting and a flexible power range, it integrates into existing infrastructure while elevating safety, reliability, and total cost of ownership for your low- and medium-voltage protection schemes.
Product Information
Extended Description
EAFR-102B Eaton: Eaton, arc flash relay, Arc Flash Relay, 80-265 Vac/dc, Arc Flash, 0, 4, 0, 120-240Vdc, 125-250Vac, 1 Normally Closed, 50/60 Hz, Panel, 3 Max fiber loop sensors, 4 trip relays, Fiber loop sensor unit, Light Sensing Inputs
Product Name
Eaton arc flash relay
Catalog Number
EAFR-102B
UPC
786680212666
Product Length/Depth
6.89 in
Product Height
6.18 in
Product Width
1.85 in
Product Weight
1 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Recognized cUL Recognized
Application
Arc flash
Special features
3 Max fiber loop sensors, 4 trip relays
Type
Fiber loop sensor unit
Product Category
Arc Flash Relay
Analog inputs
0
Analog outputs
0
Current sensing inputs
0
Digital inputs
0
Digital outputs
4
Sensing inputs
Light Sensing Inputs
Trip contact
1 Normally Closed
Zone selective interlocking
0
Power supply range
120-240Vdc, 125-250Vac
Frequency rating
50/60 Hz
Voltage rating
80-265 Vac/dc
Voltage sensing inputs
0
Mounting method
Panel
Voltage sensing inputs
0
Feature: Fiber loop sensor unit with up to three sensors and four trip relays. Business impact: Enables fast, selective arc-fault detection to minimize arc energy and protect personnel and equipment. Application: Ideal for panelboards and switchgear where rapid fault isolation is critical. Long-tail keyword integration: arc fault protection, fiber loop sensors, panel protection. Feature: Light sensing inputs in addition to fiber sensing. Business impact: Reduces nuisance trips from ambient light changes while preserving safety, improving uptime. Application: Industrial environments with variable lighting where stable sensing is essential. Feature: Power supply range of 120-240Vdc and 125-250Vac (80-265 Vac/dc). Business impact: Simplifies retrofits and new installations by matching common facility power rails, lowering wiring complexity. Application: New builds and upgrades in mixed-voltage facilities. Feature: 1 Normally Closed trip contact and 4 digital outputs. Business impact: Clear interlock signaling and scalable control for remote annunciation or interlocks, reducing wiring and integration time. Application: Control rooms and centralized protection architectures. Feature: Panel mounting with 50/60 Hz compatibility and UL/cUL recognition. Business impact: Streamlined compliance and faster commissioning, reducing project risk and warranty issues. Application: Industrial panel assemblies requiring rigorous safety standards. Feature: Special features including 3 max fiber loop sensors and 4 trip relays. Business impact: Enhanced fault coverage and reliability, improving safety margins and downtime metrics. Application: High-availability processes where arc flash mitigation is a regulatory and safety priority.
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FAQs
Installation requires panel mounting in electrical enclosures with standard 50/60 Hz power, supporting 120-240Vdc or 125-250Vac (80-265 Vac/dc). The unit uses a single Normally Closed trip contact and four digital outputs, with room for up to three fiber loop sensors. Plan for proper cable routing to minimize interference and allow sensor placement for reliable arc detection.
The device uses fiber loop sensors as its primary arc detection method, complemented by light sensing inputs. Up to three fiber loop sensors provide rapid, localized fault detection, while light sensing inputs add an extra layer of monitoring. This combination improves protection accuracy and reduces false trips in environments with variable lighting or clutter.
Yes. The EAFR-102B is designed for arc flash protection in panel-mounted environments and switchgear. Its four digital outputs and one NC trip contact enable clear signaling and interlock capabilities, while its fiber loop sensors provide fast isolation. It supports panel-based protection strategies common in manufacturing plants and aligns with industry safety practices.
The EAFR-102B carries UL Recognized and cUL Recognized certifications. These indicate conformity with essential electrical safety standards, facilitating regulatory compliance, safer integration with existing systems, and smoother procurement processes for projects governed by NEC/IEEE requirements in North American facilities.
ROI benefits come from reduced arc energy exposure, shorter downtime, and lower maintenance costs due to reliable arc fault isolation. The device’s fast trip times, compatible power range, and easy panel integration minimize installation time and retrofit risk, while its certifications support long-term compliance, contributing to safer operations and lower total cost of ownership.