Littelfuse LSP05GI LED Lighting Surge Protection Module

Littelfuse LSP05GI LED Lighting Surge Protection Modules offer 10kA max discharge current and are ideal for use in outdoor and commercial LED lighting fixtures for transient overvoltage protection. These devices utilize Littelfuse’s thermally protected varistor technology along with a built-in thermal disconnect function to provide additional protection. This prevents catastrophic failure and fire hazard even under extreme circumstances of varistor end-of-life or sustained overvoltage conditions. The LSP05GI features a built-in LED indicator that notifies users when replacement is needed.


  • 10kA Maximum Discharge Current (Imax), 8/20μs
  • IEC 61643-11/EN 61643-11 Approved
  • UL 1449 Approved
  • Build-in LED Indication saves maintenance time by identifying replacement need
  • Thermally Protected
  • Suitable for use in a luminaire with Class I or Class II insulation
  • Meets ANSI C82.77-5-2015: Location C Medium
  • Meets ANSI C136.2-2015: Enhanced Level
  • Meets IEEE C62.41.2: Location Category C Low
  • Meets US Dept. of Energy MSSSLC Model Spec.
  • High line-to-earth/ground resistance
  • IP66 rated, dust-tight, and water-resistant
  • Parallel or Series connected options


  • Outdoor and commercial LED lighting
  • Roadway lighting
  • Traffic lighting
  • Digital signage
  • Wash wall lighting
  • Parking garage lighting
  • Floodlighting
  • Tunnel lighting
  • Street lighting


Mechanical Drawing - Littelfuse LSP05GI LED Lighting Surge Protection Module

Schematic and Numbering System

Schematic - Littelfuse LSP05GI LED Lighting Surge Protection Module
Published: 2016-08-18 | Updated: 2022-03-11