Littelfuse 800815 Fuse Holder Cartridge 250V 16A Panel Mount - Equivalent & Substitute Parts

Part Overview

The Littelfuse 800815 is a cartridge fuse holder designed for 250V applications with a 16A current rating and panel mount configuration. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The 5mm x 20mm cartridge format with quick connect termination provides standardized compatibility across similar holder designs.

Substiute Parts

800815

Littelfuse Inc.In Stock: 774800815 Datasheet

Current PartRFQ

03450623H

Littelfuse Inc.In Stock: 126503450623H Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Littelfuse 800815 is determined by the following critical parameters:

• Fuse size compatibility: 5mm x 20mm cartridge format
• Mounting configuration: Panel mount orientation
• Termination interface: Quick connect 0.187" (4.7mm) standard
• Number of circuits: Single circuit design
• Mechanical fit: Physical dimensions and connector alignment

The Littelfuse 03450623H qualifies as a substitute based on matching fuse size, mounting type, termination style, and circuit count. Voltage and current ratings differ between the main part and substitute; however, these parameters do not prevent mechanical and electrical compatibility in applications where the substitute's higher ratings are acceptable.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 03450623H is an active product substitute for the obsolete 800815. Selection of this substitute is supported by:

• Active product status ensuring ongoing availability and supply chain continuity
• ROHS3 compliance meeting current environmental and regulatory standards
• Identical mechanical interface and fuse size specifications
• Higher voltage and current ratings providing operational margin in existing circuit designs
• Established Littelfuse product line continuity within the same manufacturer ecosystem

The substitute part maintains full mechanical compatibility and electrical interface standards required for direct replacement in panel mount applications using 5mm x 20mm cartridge fuses.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 03450623H directly replace the 800815 in existing installations?

A: Yes. Both parts share identical fuse size (5mm x 20mm), mounting type (panel mount), termination style (quick connect 0.187"), and circuit count (1 circuit). The mechanical interface is fully compatible.

Q: What are the differences in electrical ratings between these parts?

A: The 03450623H has a higher voltage rating (600V vs. 250V) and higher current rating (20A vs. 16A). These differences do not prevent substitution; the higher ratings provide additional operational capability.

Q: Does the contact material difference affect compatibility?

A: No. Both parts use tin-finished contacts suitable for quick connect termination. The contact material difference (copper alloy vs. brass) does not impact mechanical fit or electrical interface performance.

Q: Why is the 800815 listed as obsolete?

A: Obsolete status indicates the part is no longer in active production. The 03450623H represents the current active equivalent within the Littelfuse product portfolio.

Q: Is the 03450623H RoHS compliant?

A: Yes. The 03450623H is ROHS3 compliant, meeting current environmental regulations. The original 800815 is RoHS non-compliant.

Q: Are there packaging differences between these parts?

A: The 800815 is packaged as individual units, while the 03450623H is supplied in bulk packaging. Both formats contain identical functional components.