Littelfuse

Littelfuse L75QS400 400A 750V DC High-Speed Fuse

Name: Littelfuse L75QS400 400A 750V DC High-Speed Fuse
Brand: Littelfuse
SKU: L75QS400

Part Number: L75QS400

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A 400A high-speed DC semiconductor fuse, L75QS400 combines 50kA interruption with low-I²t protection.

Rated Current400A

Rated Voltage750V DC

Breaking Capacity50kA @ 750VDC

PackageTraditional Round Body

Tags

400A 750V DC High-Speed DC Fuse L75QS Series L75QS400 Littelfuse

Littelfuse L75QS400 is a 400A L75QS high-speed fuse rated 750V DC for semiconductor and power-conversion applications. The current-limiting round-body design carries a 50kA DC interrupting rating, with 34225 A²s pre-arcing I²t and 102567 A²s total clearing I²t. Refer to Littelfuse documentation for exact coordination and installation limits. For cross-reference work, compare its interrupting rating before the package configuration, and verify the application category against the Littelfuse technical sheet.