Littelfuse 800816 Fuse Holder Cartridge 250V 16A Panel Mount

Part Overview

The Littelfuse 800816 is a cartridge fuse holder rated for 16 A at 250V, designed for single-circuit panel mount applications. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The 800816 accommodates standard 3AG cartridge fuses with dimensions of 0.25" diameter by 1.26" length (6.35mm x 32mm).

Substiute Parts

800816

Littelfuse Inc.In Stock: 757800816 Datasheet

Current PartRFQ

03420038H

Littelfuse Inc.In Stock: 124803420038H Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 800816 are identified based on the following critical parameters that must remain constant for functional equivalence:

• Fuse size: 0.25" diameter x 1.26" length (6.35mm x 32mm) — accommodates 3AG cartridge fuses
• Voltage rating: 250V
• Number of circuits: 1
• Mounting type: Panel Mount
• Termination style: Quick Connect - 0.187" (4.7mm)

The current rating may vary within the same physical form factor and voltage class, provided the substitute part meets or exceeds the application requirements. The Littelfuse 03420038H qualifies as a substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 03420038H is an active product with ROHS3 compliance, addressing the obsolescence of the 800816. The 03420038H maintains identical mechanical and electrical compatibility through matching fuse size, voltage rating, circuit count, mounting configuration, and termination style. The increased current rating of 20 A in the substitute part provides additional capacity margin relative to the original 16 A specification. The contact material differs (brass versus copper alloy), though both materials are tin-finished and suitable for the Quick Connect termination interface. Selection of the 03420038H eliminates supply chain constraints associated with obsolete inventory while meeting all functional requirements for 250V cartridge fuse holder applications.

Frequently Asked Questions (FAQ)

Q: Can the 03420038H directly replace the 800816 in existing designs?

A: Yes. Both parts share identical fuse size (0.25" x 1.26"), voltage rating (250V), circuit count (1), mounting type (panel mount), and termination style (Quick Connect - 0.187"). Physical and electrical compatibility is maintained.

Q: Does the higher current rating of the 03420038H (20 A vs. 16 A) affect compatibility?

A: No. The fuse holder current rating indicates the maximum current the holder can safely conduct. A 20 A rated holder is suitable for circuits designed for 16 A operation, as the actual circuit protection is determined by the cartridge fuse installed in the holder, not the holder rating.

Q: What is the difference between the contact materials?

A: The 800816 uses copper alloy contacts while the 03420038H uses brass contacts. Both materials are tin-finished and compatible with the Quick Connect termination interface. Brass provides equivalent electrical performance for this application.

Q: Is the 03420038H available in the same packaging as the 800816?

A: The 03420038H is supplied in bulk packaging, whereas the 800816 packaging specification was not provided. Confirm packaging requirements with your procurement process.

Q: What is the significance of the RoHS compliance difference?

A: The 800816 is RoHS non-compliant while the 03420038H is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the 03420038H is the appropriate selection.