Littelfuse

Littelfuse L25S400 400A 250V aR High-Speed Fuse

Name: Littelfuse L25S400 400A 250V aR High-Speed Fuse
Brand: Littelfuse
SKU: L25S400

Part Number: L25S400

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Rated 400A, L25S400 supports current-limiting protection for converters, UPS systems, drives and power supplies.

Rated Current400A

Rated Voltage250V AC / 200–250V DC

Breaking Capacity200kA AC / 20kA DC

PackageNorth American Bolted Style

Tags

250V 400A aR High-Speed Fuse L25S Series L25S400 Littelfuse

Littelfuse L25S400 is rated 400A and belongs to the 250V L25S traditional high-speed family. It combines very-fast-acting Class aR behavior with 200kA AC interrupting capability for sensitive semiconductor and power-conversion equipment. Refer to Littelfuse documentation for exact coordination and installation limits. For cross-reference work, compare its voltage rating before the mounting format, and verify the current rating against the Littelfuse technical sheet.

Technical Specifications

Part Number: L25S400
Manufacturer Part Number: L25S400
Series: L25S Series
Fuse Type: Traditional High-Speed Semiconductor Fuse
Current Rating: 400A
Voltage Rating: 250V AC / 200–250V DC
AC / DC: AC/DC
Breaking Capacity: 200kA AC / 20kA DC
Operating Temperature: -55°C to +125°C
Package / Dimensions: North American Bolted Style
Mounting: Bolt-Down
Application: Power Electronics · Power supplies · UPS · Variable Speed Drives
Standard: IEC 60269-4
Terminal Type: Bolted Tags
Fuse Speed: Very Fast Acting
Utilization Class: aR
Approvals: CSA · RoHS · UL Recognized
Certifications: UL Recognized · CSA Recognized · RoHS
Body: Melamine
Caps: Silver-plated copper alloy