Littelfuse 03455LS4H Fuse Holder - Equivalent & Substitute Parts

Part Overview

The Littelfuse 03455LS4H is a cartridge fuse holder designed for 10 A, 250V applications with panel mount configuration. This component is classified as Active product status and is ROHS3 compliant. Alternative models may be required due to inventory constraints, specific termination requirements, or application-specific mounting preferences while maintaining electrical and mechanical compatibility.

Substiute Parts

03455LS4H

Littelfuse Inc.In Stock: 87103455LS4H Datasheet

Current PartRFQ

0031.1754

SCHURTER Inc.In Stock: 12210031.1754 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 03455LS4H is determined by the following critical parameters:

• Fuse Size: 5mm x 20mm cartridge format
• Voltage Rating: 250V minimum
• Mounting Type: Panel Mount configuration
• Number of Circuits: Single circuit
• Fuse Type: Cartridge holder
• Contact Material and Finish: Copper Alloy with Tin finish
• Regulatory Compliance: ROHS3 Compliant

The SCHURTER 0031.1754 qualifies as a substitute based on matching all critical electrical and mechanical parameters. Termination style differs (Solder Lug vs. Quick Connect), which represents a design variation rather than a compatibility limitation, as both termination methods are suitable for panel mount applications.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 03455LS4H and SCHURTER 0031.1754 maintain Active product status and satisfy ROHS3 and REACH compliance requirements. Selection between these components should be based on termination method compatibility with the target application circuit board or wiring harness. The Quick Connect termination of the 03455LS4H provides tool-free installation, while the Solder Lug termination of the 0031.1754 requires soldering operations. Both configurations are electrically and mechanically equivalent for 5mm x 20mm cartridge fuse applications at 250V, 10A ratings.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 0031.1754 directly replace the Littelfuse 03455LS4H in existing designs?

A: Yes, provided the circuit board or wiring harness accommodates solder lug termination. The electrical and mechanical specifications are equivalent for cartridge fuse holder applications.

Q: What is the primary difference between these two fuse holders?

A: The termination method differs. The Littelfuse uses Quick Connect terminals (0.187" spade connectors), while the SCHURTER uses Solder Lug terminals. Both are suitable for panel mount installations.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the 03455LS4H and 0031.1754 are ROHS3 compliant and REACH unaffected, meeting current electronic component regulations.

Q: What fuse types are compatible with these holders?

A: Both holders accept 5mm x 20mm cartridge fuses rated for 250V applications.

Q: Is there a current rating difference between these fuse holders?

A: The Littelfuse 03455LS4H is specified at 10 A. The SCHURTER 0031.1754 current rating is not provided in the available technical data.