Eaton EAFR-08-50 Arc Flash Relay Sensor - UL Recognized
Part Number: EAFR-101-B
Quick Summary
Eaton arc flash relay sensor EAFR-08-50 detects arc flashes to protect personnel and equipment in industrial electrical panels. Too often, high-temperature environments degrade sensor sensitivity or cause false trips, leading to injuries or costly downtime. UL Recognized and cUL Recognized certifications, along with the 50 m fiber loop capability, reinforce compliance and reliability in harsh facilities. In practice, this means safer panels, faster fault isolation, and reduced maintenance costs through dependable sensing. Rated for demanding environments, the device supports robust arc flash protection across large switchgear and control cabinets, delivering a strong ROI for electrical teams.
Product Information
Extended Description
EAFR-101-B Eaton: Eaton, arc flash relay, Arc Flash Relay, 80-265 Vac/dc, Arc Flash, 0, 4, 0, 18-72Vdc, Normally Open, 50/60 Hz, Panel, Light Sensing Inputs
Product Name
Eaton arc flash relay
Catalog Number
EAFR-101-B
UPC
786679168479
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.
Compliances
Contact Manufacturer
Application
Arc flash
Type
Arc flash relay
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
Normally Open
Zone selective interlocking
0
Power supply range
18-72Vdc
Frequency rating
50/60 Hz
Voltage rating
80-265 Vac/dc
Voltage sensing inputs
0
Mounting method
Panel
Voltage sensing inputs
0
The fiber loop length of 50 m enables comprehensive arc flash sensing across large switchgear and motor control centers, reducing blind spots and enabling faster protective actions. This translates to a measurable business impact: minimized blast exposure risk for personnel and lower downtime during fault conditions. The 50 m loop is particularly advantageous in retrofits where new sensors must span existing enclosures without extensive wiring. In practice, installation flexibility supports compatibility with Eaton protection schemes and simplifies field programming in busy plants. The high-temperature glass fiber sensor withstands elevated ambient temperatures, reducing erroneous trips and unnecessary service calls in hot electrical rooms. This reliability translates into lower maintenance costs and improved asset uptime, especially in industries with demanding thermal profiles. With an 8000 Lux sensitivity, the sensor maintains reliable arc detection under variable lighting, shading, and metallic surfaces, helping facilities meet safety targets without adjusting lighting. This capability is especially important in plants with mixed lighting or reflective surfaces around switchgear doors. UL Recognized and cUL Recognized certifications provide regulatory confidence and faster procurement, streamlining audits and commissioning. The built-in warranty and Eaton support ecosystem further protect long-term investment. The compact dimensions (8.46 in L x 7.87 in W x 2.87 in H) and light 0.25 lb weight enable easier installation in crowded panels and retrofit projects, supporting better space planning and modular protection strategies.
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FAQs
The EAFR-08-50 is designed for use with large panels and switchgear where a 50 m fiber loop can span multiple compartments. Plan fiber routing to avoid sharp bends, heat sources, and physical damage. Verify the 8.46 in L x 7.87 in W x 2.87 in H footprint fits your enclosure, and ensure secure termination at compatible Eaton or third-party protection relays.
Key specs include a 50 m fiber loop length, high-temperature glass fiber sensor material, 8000 Lux light sensitivity, dimensions of 8.46 in L x 7.87 in W x 2.87 in H, weight 0.25 lb, and UL Recognized plus cUL Recognized certifications. These specs support reliable arc detection in challenging environments and provide clear operating margins for retrofits and new builds.
Yes. The sensor uses high-temperature glass fiber, designed to withstand elevated ambient temperatures typical of electrical rooms and switchgear enclosures, helping to prevent false trips and ensuring consistent arc detection under harsh thermal conditions.
The device is UL Recognized and cUL Recognized, which supports regulatory compliance and smoother acceptance in North American markets. These certifications reduce audit risk, simplify procurement, and align with safety standards commonly required for arc flash protection equipment.
ROI comes from reduced downtime after arc events, improved worker safety, and lower maintenance costs due to fewer nuisance trips. The 50 m fiber loop enables fewer devices and simpler retrofits, while the UL/cUL certifications streamline commissioning and improve overall total cost of ownership for electrical protection systems.