Relays and Controls Technical Center

Welcome to the Relays and Controls Technical Center!

The Technical Center allows you to download the most up-to-date resources on our Protection Relays and Control Products. New information is constantly added, so be sure to check back often for new files and downloads.


Network Support

Network communications
support files for Littelfuse
Startco relays.
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Relay Accessories

Browse Protection Relay


Download PC software
to connect and interact
with Startco relays over
local and network

Online Demos & Tools

Learn more about using
and progr
amming Littelfuse
Startco relays with online
user interface demos.
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View our Protection Relay
product videos.

Technical Notes

Browse available Technical Notes
for Littelfuse Relay Products.