Eaton BK/HTB-46-R Fuse Holder: Equivalent & Substitute Parts

Part Overview

The Eaton BK/HTB-46-R is a cartridge fuse holder rated for 20 A at 250V, designed for single-circuit panel mount applications. This component accommodates 3AG cartridge fuses with dimensions of 0.25" diameter by 1.26" length (6.35mm x 32mm). The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing maintenance and system support.

Substiute Parts

BK/HTB-46-R

Eaton - Electronics DivisionIn Stock: 1060BK/HTB-46-R Datasheet

Current PartRFQ

03420828H

Littelfuse Inc.In Stock: 406103420828H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Eaton BK/HTB-46-R is determined by strict equivalence across the following critical parameters:

• Current Rating: 20 A (exact match required)
• Voltage Rating: 250V (exact match required)
• Fuse Size: 0.25" Dia x 1.26" L / 6.35mm x 32mm (exact match required)
• Fuse Type: Cartridge (exact match required)
• Number of Circuits: 1 (exact match required)
• Mounting Configuration: Panel Mount (exact match required)
• Termination Interface: Quick Connect - 0.250" (6.3mm) (exact match required)

The Littelfuse 03420828H meets all substitution criteria, providing functional equivalence for applications currently utilizing the obsolete Eaton component.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 03420828H is the direct functional equivalent for the obsolete Eaton BK/HTB-46-R. Selection of the Littelfuse substitute is supported by the following factors:

• All electrical parameters (current, voltage, fuse type, and circuit count) are identical
• All mechanical parameters (fuse size, mounting configuration, and termination interface) are identical
• The substitute component is in active production status, ensuring long-term availability
• The Littelfuse part carries ROHS3 compliance certification, meeting current regulatory requirements
• Both components share identical ECCN and HTSUS classifications, confirming regulatory equivalence
• Inventory availability of the Littelfuse substitute (3958 pcs) supports immediate procurement

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 03420828H be used as a direct replacement for the Eaton BK/HTB-46-R?

A: Yes. The Littelfuse 03420828H is a direct functional equivalent. All electrical ratings (20 A, 250V), mechanical dimensions (0.25" x 1.26"), fuse type (cartridge), circuit configuration (1 circuit), mounting method (panel mount), and termination interface (Quick Connect 0.250") are identical.

Q: What is the significance of the product status difference between the two parts?

A: The Eaton BK/HTB-46-R is classified as obsolete, indicating it is no longer manufactured or supported by Eaton. The Littelfuse 03420828H is in active production status, ensuring continued availability, technical support, and compliance with current standards.

Q: Are there any compliance differences between these two fuse holders?

A: The Littelfuse 03420828H carries ROHS3 compliance certification. Both components share identical ECCN (EAR99) and HTSUS (8538.90.8180) classifications, confirming regulatory equivalence for export and tariff purposes.

Q: What fuse types are compatible with both holders?

A: Both the Eaton BK/HTB-46-R and Littelfuse 03420828H accommodate 3AG cartridge fuses with dimensions of 1/4" x 1-1/4" (SFE-20 standard).

Q: Are there any physical installation differences?

A: No. Both components are panel mount fuse holders with identical Quick Connect termination at 0.250" (6.3mm). Installation procedures and panel cutout requirements are identical.

Q: What is the contact material specification for the substitute part?

A: The Littelfuse 03420828H features brass contacts with nickel finish, providing corrosion resistance and reliable electrical connection.