Littelfuse TLN400 400A 170V DC Fast-Acting Telecom Fuse
● Contact for AvailabilityA TLN telecom power fuse rated 400A at 170V DC, TLN400 offers 100kA fault-interruption capability.

A TLN telecom power fuse rated 400A at 170V DC, TLN400 offers 100kA fault-interruption capability.
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For telecom DC distribution, Littelfuse TLN400 carries a 400A continuous rating at 170V DC and a 100kA interrupting rating. The TLN design is fast-acting and current-limiting, with form factors aligned to common 250V Class R dimensions across the ampere range. Refer to Littelfuse documentation for exact coordination and installation limits. For cross-reference work, compare its voltage rating before the application category, and verify the approval status against the Littelfuse technical sheet.