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Littelfuse

Littelfuse L75QS090 90A 750V DC High-Speed Fuse

Part Number: L75QS090

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Littelfuse L75QS090 delivers very-fast-acting 90A protection at 750V DC in a bolted round-body format.

Rated Current90A
Rated Voltage750V DC
Breaking Capacity50kA @ 750VDC
PackageTraditional Round Body

Littelfuse L75QS090 is a 90A 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 625 A²s pre-arcing I²t and 2498 A²s total clearing I²t. Refer to Littelfuse documentation for exact coordination and installation limits. For cross-reference work, compare its interrupting rating before the terminal style, and verify the mounting format against the Littelfuse technical sheet.

Technical Specifications

Part Number
L75QS090
Manufacturer Part Number
L75QS090
Series
L75QS Series
Fuse Type
High-Speed Round-Body DC Semiconductor Fuse
Current Rating
90A
Voltage Rating
750V DC
AC / DC
DC
Breaking Capacity
50kA @ 750VDC
I²t
2498 A²s total @ 750VDC
Pre-arcing I²t
625 A²s
Total I²t
2498
Operating Temperature
-55°C to +125°C
Package / Dimensions
Traditional Round Body
Mounting
Bolt-Down
Application
DC distribution · EV · Power Electronics · UPS
Standard
UL Recognition
Terminal Type
Bolted Tags
Fuse Speed
Very Fast Acting
Approvals
RoHS · UL Recognized
Certifications
UL Recognized · cURus · RoHS · REACH
Body
Melamine
Caps
Copper alloy
Total clearing I²t
2498 A²s @ 750VDC

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