Eaton 3998 Fuse Block - Equivalent & Substitute Parts

Part Overview

The Eaton 3998 is a fuse circuit block component manufactured by Eaton - Bussmann Electrical Division. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing maintenance and repair applications. The 3998 serves as a chassis-mounted fuse holder for cartridge-type fuses in 600V electrical circuits. Due to its discontinued status, direct substitutes from active product lines are required for system continuity.

Substiute Parts

3998

Eaton - Bussmann Electrical DivisionIn Stock: 8773998 Datasheet

Current PartRFQ

BK/S-8002-1X-R

Eaton - Electronics DivisionIn Stock: 3729BK/S-8002-1X-R Datasheet

DirectRFQ

03540001ZXGY

Littelfuse Inc.In Stock: 97603540001ZXGY Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Eaton 3998 is determined by strict alignment of the following electrical and mechanical parameters:

• Voltage Rating: 600V
• Current Rating: 30 A
• Fuse Type: Cartridge
• Fuse Size: 0.25" Dia x 1.26" L (6.35mm x 32mm) — compatible with 3AG, 1/4" x 1-1/4" (SFE-20) fuses
• Number of Circuits: 1
• Mounting Type: Chassis Mount
• Termination Style: Solder Lug
• Fuseholder Type: Block

Two substitute parts meet these criteria and are available from active product lines: the Eaton BK/S-8002-1X-R and the Littelfuse 03540001ZXGY. Both maintain identical electrical specifications and mechanical form factors, ensuring direct functional equivalence in 600V, 30A single-circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are classified as active products with current manufacturing support, eliminating supply chain risk associated with the obsolete Eaton 3998. Both alternatives maintain full ROHS3 compliance and EAR99 export classification, ensuring regulatory alignment with the original component.

The Eaton BK/S-8002-1X-R, part of the S-8000 series, is manufactured by Eaton - Electronics Division and offers continuity within the Eaton product ecosystem. The Littelfuse 03540001ZXGY, from the OMNI-BLOK® 354 series, provides an alternative from a dedicated fuse and fuseholder specialist manufacturer. Both parts are suitable for direct substitution in 600V, 30A single-circuit chassis-mount applications requiring solder lug termination.

Frequently Asked Questions (FAQ)

Q: Can the Eaton BK/S-8002-1X-R and Littelfuse 03540001ZXGY be used interchangeably with the Eaton 3998?

A: Yes. Both substitute parts maintain identical electrical ratings (600V, 30A), fuse cartridge specifications (0.25" Dia x 1.26" L), mounting configuration (chassis mount), and termination style (solder lug). They are functionally equivalent for single-circuit fuse block applications.

Q: What is the primary reason for substituting the Eaton 3998?

A: The Eaton 3998 is classified as obsolete. Substitute parts from active product lines ensure ongoing availability and manufacturing support for maintenance and repair applications.

Q: Are there differences in contact material between the substitute parts?

A: Yes. The Eaton BK/S-8002-1X-R uses Spring Bronze with Tin-Lead finish, while the Littelfuse 03540001ZXGY uses Phosphorus Bronze with Tin finish. Both materials are suitable for 600V, 30A cartridge fuse applications and do not affect electrical compatibility.

Q: Do both substitute parts support the same fuse types?

A: Yes. Both are compatible with 3AG, 1/4" x 1-1/4" (SFE-20) cartridge fuses, matching the original Eaton 3998 specification.

Q: What is the inventory status of the substitute parts?

A: The Eaton BK/S-8002-1X-R has 3,657 pieces in stock. The Littelfuse 03540001ZXGY has 909 pieces in stock. Both are available as new original components.