PGR-8800 Series - Arc-Flash Relay

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The PGR-8800 is a UL and cUL Listed Arc-Flash Relay that reliably detects developing Arc-Flash incidents without nuisance tripping by looking for a combination of excess light and current. Phase-current-transformer inputs are provided for current-constrained arc-flash protection and, when so equipped, a programmable definite-time overcurrent function can be enabled. An optical sensor on the PGR-8800 and adjustable trip level reduce the chance of nuisance tripping by setting a threshold for ambient light. Sensors, inputs, and connections are monitored to ensure fail-safe operation. A secondary solid-state trip circuit provides a redundant trip path. A USB port is used for configuration and access event logs and graphs.

The PGR-8800 can be used as part of an energy-reducing active arc-flash mitigation system to meet NEC 240.87 (B) (4). 

 Littelfuse PGR-8800 Arc-Flash Video Thumbnail  Click Here to View the Product Video

For more information about Littelfuse Arc-Flash Protection Relays, visit

Access specifications, certifications, check availability and order parts below

Catalog #Supply
ApprovalsIEEE Device NumbersRelay
PGR-8800-00120/24012-48/120/240Three Form C (N.O./N.C.); One Form A (N.O.)UL cULus CE C-tick50
Non Fail-safe
5.2H X 7.9W X 2.2D

pdf icon PGR-8800 Datasheet

pdf icon PGR-8800 Manual

The PGR-8800 Arc-Flash Relay is a high-speed, arc-detection device for electrical power distribution systems.

dwg PGR-8800 CAD Drawing

pdf icon Improve Safety and Reliability with Instant Arc-Flash Detection - Brochure

pdf icon PGR-8800 Arc-Flash Relay Application Guide

pdf icon PGR-8800 Arc-Flash Relay Application Guide - Mandarin

pdf icon Littelfuse Arc-Flash Relay Saves Plant from Catastrophic Damage - Case Study

pdf icon Littelfuse Arc-Flash Relay FAQ

Document PGR-8800 Arc-Flash Relay Guideform Specifications

PGR-8800 SKM Device Library Update

Update your SKM software to list the validated PGR-8800 when calculating your incident energy. Using this will save time by automatically determining your systems trip times, arc flash boundaries and required PPE. Please visit for instructions on how to install the SKM file.

PGR-8800 STP 3D Model

pdf icon Key Considerations for Selecting an Arc-Flash Relay

This white paper informs specifying engineers, original equipment manufacturers, designers, and end users about the most important features in arc-flash relay technology so that they can select the best relay for their application.

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Catalog # Certificates
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PGR-8800-00 ABS CertificationDNV logoculusul