Thank you! Your submission has been received!

Oops! Something went wrong while submitting the form :(

Request Quote

LSP10 Series

Littelfuse LSP10 Surge Protection Modules provide transient overvoltage protection for outdoor and commercial LED lighting fixtures. Constructed with Littelfuse thermally protected Varistors, they provide robust surge current handling capability. A built-in thermal disconnect function provides additional protection from catastrophic failures and fire hazards, even under the extreme circumstances of Varistor end of life or sustained overvoltage conditions. The LSP10 is available with either parallel or series connections. With the parallel-connected version, an indicator wire can activate an LED to tell maintenance personnel when to replace the SPD in order to ensure the luminaire remains protected. The series-connected version cuts luminaire power off to provide a clearly visible indication the SPD should be replaced.


  • Maximum Lightning Surge Current: 20,000A
  • Thermally protected varistor technology
  • Series connected option for LSP10 module provides clear indication of SPD replacement by turning off luminaire
  • IP66 water-proof and dust-proof
  • Compact form factor (48x48x30mm) with mounting tabs
  • UL1449 Type 4 component assemblies recognition
  • Compliant with IEC 61643-11 Class II and EN61643-11 Type 2* (*Self-declared compliance)

  • Outdoor and commercial LED lighting
  • Roadway lighting
  • Traffic lighting
  • Digital signage
  • Service entrance lighting
  • Parking garage/lot lighting
  • Flood lighting
  • Tunnel lighting
  • Street lighting

Access specifications, certifications, check availability and order parts below

Catalog # Size VMAX AC (V) (ITM 1xAmps (A)
LSP10120P 48x48x30 120 20000
LSP10120S 48x48x30 120 20000
LSP10240LLP 48x48x30 240 20000
LSP10240LLS 48x48x30 240 20000
LSP10240P 48x48x30 240 20000
LSP10240S 48x48x30 240 20000
LSP10277P 48x48x30 277 20000
LSP10277S 48x48x30 277 20000
LSP10347P 48x48x30 347 20000
LSP10347S 48x48x30 347 20000
LSP10480LLP 48x48x30 480 20000
LSP10480LLS 48x48x30 480 20000
LSP10480P 48x48x30 480 20000
LSP10480S 48x48x30 480 20000
LSP Modules


Our staff possesses decades of in-depth application knowledge and we are eager to share it with you. All of our field engineers have control gear and fuse backgrounds, making us uniquely qualified to provide solutions to your protection problems. We offer selection software to accurately apply our products, fuse audits to help you streamline your operations, or in-house seminars to educate your personnel. Ask us! 


From the friendly voice that answers the phone, to the delivery that arrives before you expect it, we pride ourselves on delivering the absolute highest level of customer service. At Fusetek, customer service is not an empty promise but the way we do business, each and every day. Use us! 


Can’t find that unusual fuse? Not sure about a particular application? We can help. 

Our quick, knowledgeable replies get you the answers you need, when you need them.   Whether it’s technical assistance, help in finding that special fuse, or quick turnaround to get you out of a jam, we’re here for you. Call us!

Contact Us

Toll free for North America
Tel: 1-800-479-3875
Fax: 1-800-866-7690
International Tel: 1-613-384-4144 International Fax: 1-613-384-0167

Email: info@fusetek.comMailing Address: 599 Norris Crt.
Kingston, Ontario
Canada K7P 2R9