BK/HTB-64I Cartridge Fuse Holder Equivalent & Substitute Parts

Part Overview

The BK/HTB-64I is a cartridge fuse holder manufactured by Eaton - Electronics Division, designed for 20 A, 250V panel mount applications with single circuit configuration. This component accommodates 0.25" diameter by 1.26" length (6.35mm x 32mm) cartridge fuses with quick connect 0.187" (4.7mm) termination.

The BK/HTB-64I is classified as obsolete product status. Identification of equivalent and substitute cartridge fuse holders is necessary to maintain circuit protection functionality in legacy systems and to ensure continued availability for replacement and repair applications.

Substiute Parts

BK/HTB-64I

Eaton - Electronics DivisionIn Stock: 712BK/HTB-64I Datasheet

Current PartRFQ

BK/HTB-64I-R

Eaton - Electronics DivisionIn Stock: 675BK/HTB-64I-R Datasheet

DirectRFQ

03453RF1H

Littelfuse Inc.In Stock: 86903453RF1H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute cartridge fuse holders for the BK/HTB-64I are determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Current Rating: 20 A
• Voltage Rating: 250V
• Fuse Size: 0.25" Dia x 1.26" L (6.35mm x 32mm)
• Fuse Type: Cartridge
• Number of Circuits: 1
• Mounting Type: Panel Mount
• Termination Style: Quick Connect - 0.187" (4.7mm)
• Compatible Fuse Standard: 3AG, 1/4" x 1-1/4" (SFE-20)

All identified substitute parts meet these electrical and mechanical requirements without deviation. Substitutes are grouped into two categories: direct manufacturer equivalents from Eaton - Electronics Division and cross-manufacturer alternatives from qualified suppliers.

Parameter Comparison

Engineering Selection Recommendations

BK/HTB-64I-R (Eaton - Electronics Division)

The BK/HTB-64I-R is the direct manufacturer equivalent from Eaton - Electronics Division. This part maintains identical electrical and mechanical specifications to the obsolete BK/HTB-64I while offering active product status. The BK/HTB-64I-R is ROHS3 compliant and REACH unaffected, providing regulatory compliance advantages over the original part. This substitute is the preferred selection for applications requiring manufacturer continuity and warranty support.

03453RF1H (Littelfuse Inc.)

The 03453RF1H is a cross-manufacturer substitute from Littelfuse Inc. that meets all electrical and mechanical requirements. This part is active product status and ROHS3 compliant with REACH unaffected designation. The 03453RF1H features copper alloy contacts with tin finish, providing specified contact material and finish properties. This substitute is suitable for applications where cross-manufacturer sourcing is acceptable and inventory availability is a priority.

Frequently Asked Questions (FAQ)

Q: What determines if a cartridge fuse holder can substitute for the BK/HTB-64I?

A: Substitution requires exact equivalence across eight critical parameters: 20 A current rating, 250V voltage rating, 0.25" diameter by 1.26" length fuse size, cartridge fuse type, single circuit configuration, panel mount mounting type, quick connect 0.187" (4.7mm) termination style, and compatibility with 3AG, 1/4" x 1-1/4" (SFE-20) fuse standards. All identified substitutes meet these requirements without exception.

Q: Why is the BK/HTB-64I-R preferred over the 03453RF1H?

A: The BK/HTB-64I-R is manufactured by Eaton - Electronics Division, the original manufacturer of the BK/HTB-64I. This maintains manufacturer continuity, warranty support, and supply chain consistency. Both parts are functionally equivalent; manufacturer preference depends on organizational procurement policies and supplier relationships.

Q: Are there mechanical compatibility concerns when substituting these parts?

A: No. All substitute parts share identical fuse size specifications (0.25" Dia x 1.26" L), mounting type (panel mount), and termination style (quick connect 0.187"). Physical installation and electrical connection are directly compatible without modification.

Q: What is the significance of RoHS compliance differences?

A: The original BK/HTB-64I is RoHS non-compliant. Both substitute parts (BK/HTB-64I-R and 03453RF1H) are ROHS3 compliant. For applications subject to RoHS regulatory requirements, substitution to either active part is necessary. For legacy systems without RoHS mandates, compliance status does not affect functional performance.

Q: Can the 03453RF1H be used in applications originally designed for the BK/HTB-64I?

A: Yes. The 03453RF1H meets all electrical and mechanical specifications. Cross-manufacturer substitution is electrically and mechanically valid. Organizational procurement policies and supplier qualification procedures determine acceptability in specific applications.

Q: What packaging options are available?

A: All three parts are supplied in bulk packaging. No alternative packaging configurations are specified in the provided data.