BK/HTB-54I Cartridge Fuse Holder Equivalent & Substitute Parts

Part Overview

The BK/HTB-54I is a cartridge fuse holder manufactured by Eaton - Electronics Division, designed for 20 A at 250V single-circuit panel mount applications. This component accommodates 3AG cartridge fuses with dimensions 0.25" diameter × 1.26" length (6.35mm × 32mm). The BK/HTB-54I is classified as obsolete product status, necessitating identification of active equivalent and substitute components to maintain design continuity and ensure procurement availability for new production and field replacement applications.

Substiute Parts

BK/HTB-54I

Eaton - Electronics DivisionIn Stock: 734BK/HTB-54I Datasheet

Current PartRFQ

BK/HTB-54I-R

Eaton - Electronics DivisionIn Stock: 1857BK/HTB-54I-R Datasheet

DirectRFQ

03453HS1H

Littelfuse Inc.In Stock: 121003453HS1H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/HTB-54I is determined by strict equivalence across the following parameters: current rating (20 A), voltage rating (250V), fuse size (0.25" Dia × 1.26" L), fuse type (cartridge), number of circuits (1), mounting type (panel mount), and termination style (Quick Connect - 0.187"). All identified substitute parts match these electrical and mechanical specifications without deviation.

Direct Equivalent (Same Manufacturer): BK/HTB-54I-R is manufactured by Eaton - Electronics Division and maintains identical electrical and mechanical parameters to the main part. The primary distinction is product status: BK/HTB-54I-R is active, whereas BK/HTB-54I is obsolete.

Cross-Manufacturer Substitute: 03453HS1H is manufactured by Littelfuse Inc. and satisfies all required electrical and mechanical parameters. This component is active product status and provides functional equivalence for applications requiring the specified 20 A, 250V cartridge fuse holder with panel mount configuration.

Parameter Comparison

Engineering Selection Recommendations

For New Production and Design Updates: BK/HTB-54I-R is the primary recommended substitute. As an active product from the original manufacturer (Eaton - Electronics Division), it provides direct design continuity with identical electrical and mechanical specifications. BK/HTB-54I-R achieves ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for new equipment designs.

For Cross-Manufacturer Flexibility: 03453HS1H (Littelfuse Inc.) serves as a qualified alternative when supply chain considerations or procurement strategy require cross-manufacturer sourcing. This component maintains full electrical and mechanical equivalence and achieves ROHS3 compliance and REACH unaffected status. The Littelfuse part is suitable for applications where manufacturer diversification is a design or procurement objective.

Compliance Considerations: The original BK/HTB-54I is RoHS non-compliant. Both substitute parts (BK/HTB-54I-R and 03453HS1H) are ROHS3 compliant, making them appropriate selections for applications subject to RoHS directives or customer compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can BK/HTB-54I-R be used as a direct replacement for BK/HTB-54I in existing equipment? A: Yes. BK/HTB-54I-R maintains identical electrical ratings (20 A, 250V), fuse size (0.25" Dia × 1.26" L), mounting type (panel mount), and termination style (Quick Connect - 0.187"). The components are mechanically and electrically interchangeable.

Q: What is the primary difference between BK/HTB-54I and BK/HTB-54I-R? A: Product status and regulatory compliance. BK/HTB-54I is obsolete and RoHS non-compliant. BK/HTB-54I-R is active product status and ROHS3 compliant. Both are manufactured by Eaton - Electronics Division with identical specifications.

Q: Is 03453HS1H compatible with applications designed for BK/HTB-54I? A: Yes. 03453HS1H is manufactured by Littelfuse Inc. and meets all electrical and mechanical requirements: 20 A current rating, 250V voltage rating, 0.25" Dia × 1.26" L fuse size, cartridge type, single circuit, panel mount configuration, and Quick Connect - 0.187" termination. The component is functionally equivalent.

Q: Are there packaging differences between these substitute parts? A: BK/HTB-54I-R and 03453HS1H are supplied in bulk packaging. Packaging format should be confirmed with procurement specifications if reel, tape, or other specific packaging is required.

Q: Which substitute part should be selected for new designs requiring RoHS compliance? A: Both BK/HTB-54I-R and 03453HS1H are ROHS3 compliant and suitable for new designs subject to RoHS directives. Selection between these two should be based on manufacturer preference, supply chain strategy, or existing component qualification within the design.

Q: Can these fuse holders accommodate fuse types other than 3AG cartridges? A: No. All three components are specified for 3AG cartridge fuses with dimensions 0.25" diameter × 1.26" length (6.35mm × 32mm). Use only fuses matching this specification.

Q: What is the Quick Connect - 0.187" termination style? A: This termination style uses 0.187" (4.7mm) quick-connect terminals for electrical connection. Ensure mating connectors or wire terminals are compatible with this specification.