SCHURTER 0031.1809 Fuse Holder Equivalent & Substitute Parts

Part Overview

The SCHURTER 0031.1809 is a panel-mount cartridge fuse holder designed for 5mm x 20mm fuses at 250V, single-circuit configuration with solder lug termination. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations. The part features copper alloy contacts with tin finish and maintains ROHS3 compliance.

Substiute Parts

0031.1809

SCHURTER Inc.In Stock: 9980031.1809 Datasheet

Current PartRFQ

85000001009

Littelfuse Inc.In Stock: 186785000001009 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCHURTER 0031.1809 is determined by strict alignment with the following parameters:

• Fuse size accommodation: 5mm x 20mm cartridge format
• Voltage rating: 250V minimum
• Circuit configuration: Single circuit
• Mounting interface: Panel mount with solder lug termination
• Contact material and finish: Copper alloy with tin plating
• Regulatory compliance: ROHS3 compliance required

The Littelfuse 85000001009 qualifies as a direct substitute based on matching all critical mechanical and electrical parameters. The addition of a 10A current rating specification in the Littelfuse part does not disqualify substitution, as current rating represents an operational characteristic that does not conflict with the holder's mechanical compatibility or voltage rating.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 85000001009 is the qualified substitute for the obsolete SCHURTER 0031.1809. Selection is based on:

• Complete mechanical compatibility: identical fuse size and panel-mount interface
• Electrical equivalence: matching 250V voltage rating and single-circuit configuration
• Termination compatibility: both parts utilize solder lug termination
• Regulatory alignment: both maintain ROHS3 compliance and REACH unaffected status
• Active product status: the Littelfuse part is currently in active production with established supply chain availability

The transition from SCHURTER to Littelfuse involves no functional compromise in the fuse holder application.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 85000001009 directly replace the SCHURTER 0031.1809 in existing designs?

A: Yes. Both parts accommodate 5mm x 20mm cartridge fuses, operate at 250V, feature single-circuit configuration, and utilize identical solder lug termination. Panel-mount dimensions and contact materials are equivalent.

Q: What is the significance of the 10A current rating on the Littelfuse part?

A: The current rating specifies the maximum current the fuse holder is designed to safely interrupt. This parameter does not affect mechanical or electrical compatibility with the fuse holder interface itself. The 10A rating is an operational specification of the Littelfuse holder.

Q: Are there packaging differences between these parts?

A: The SCHURTER part is listed with packaging designation "-" (undefined), while the Littelfuse part is supplied in bulk packaging. Packaging format does not affect functional equivalence.

Q: Why is the SCHURTER part classified as obsolete?

A: Obsolescence indicates the part is no longer in active production. The Littelfuse 85000001009 provides functional continuity for applications requiring 5mm x 20mm cartridge fuse holders at 250V.

Q: Are both parts compliant with current regulatory requirements?

A: Yes. Both the SCHURTER 0031.1809 and Littelfuse 85000001009 maintain ROHS3 compliance and are unaffected by REACH regulations.