Littelfuse

Littelfuse L25S040 40A 250V aR High-Speed Fuse

Name: Littelfuse L25S040 40A 250V aR High-Speed Fuse
Brand: Littelfuse
SKU: L25S040

Part Number: L25S040

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L25S040 is a 40A L25S high-speed fuse for 250V AC semiconductor and power-conversion protection.

Rated Current40A

Rated Voltage250V AC / 200–250V DC

Breaking Capacity200kA AC / 20kA DC

PackageNorth American Bolted Style

Tags

250V 40A aR High-Speed Fuse L25S Series L25S040 Littelfuse

Littelfuse L25S040 is rated 40A 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. Use the official datasheet to confirm coordination details before installation. For cross-reference work, compare its current rating before the series designation, and verify the package configuration against the Littelfuse technical sheet.

Technical Specifications

Part Number: L25S040
Manufacturer Part Number: L25S040
Series: L25S Series
Fuse Type: Traditional High-Speed Semiconductor Fuse
Current Rating: 40A
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