Equivalent & Substitute Parts for BK/HTB-24I Cartridge Fuse Holder

Part Overview

The BK/HTB-24I is a cartridge fuse holder manufactured by Eaton - Electronics Division, designed for panel mount applications with a 20 A current rating at 250V. This single-circuit holder accommodates 0.25" diameter by 1.26" length cartridge fuses (6.35mm x 32mm) and features quick connect termination. The product is currently active in production with 785 units in stock.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design revisions require alternative sourcing from qualified manufacturers. Substitute parts must maintain compatibility across critical electrical and mechanical parameters including voltage rating, current capacity, fuse size, mounting configuration, and termination style.

Substiute Parts

BK/HTB-24I

Eaton - Electronics DivisionIn Stock: 797BK/HTB-24I Datasheet

Current PartRFQ

BK16-HTJ-601I

Eaton - Electronics DivisionIn Stock: 1824BK16-HTJ-601I Datasheet

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03453LF1H

Littelfuse Inc.In Stock: 151603453LF1H Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/HTB-24I are identified based on strict alignment with the following critical parameters:

Primary Compatibility Criteria:

• Voltage rating of 250V
• Single-circuit configuration
• Cartridge fuse type
• Panel mount orientation
• Fuse size accommodation of 0.25" diameter cartridges

Substitution Logic:

Direct Equivalent (03453LF1H): This Littelfuse Inc. part maintains identical electrical specifications (20 A, 250V), mechanical dimensions (0.25" Dia x 1.26" L), fuse type (cartridge), mounting configuration (panel mount), and termination style (quick connect 0.187"). The part is RoHS3 compliant and REACH unaffected, representing a functionally equivalent alternative with enhanced regulatory compliance.

Partial Substitute (BK16-HTJ-601I): This Eaton part shares the same voltage rating (250V), fuse type (cartridge), mounting type (panel mount), and single-circuit design. However, it operates at a reduced current rating of 10 A and features a different termination style (solder lug). This part is suitable only when circuit current requirements do not exceed 10 A and solder lug termination is acceptable in the application.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred):

The 03453LF1H from Littelfuse Inc. is the primary equivalent substitute for the BK/HTB-24I. Both parts maintain identical current and voltage ratings (20 A, 250V), accommodate the same fuse dimensions (0.25" Dia x 1.26" L), feature identical termination style (quick connect 0.187"), and are designed for panel mount applications. The Littelfuse part offers improved regulatory compliance with RoHS3 certification and REACH unaffected status, making it suitable for applications with enhanced environmental requirements.

For Current-Limited Applications:

The BK16-HTJ-601I may be selected only when circuit design specifications permit operation at 10 A or lower. This part shares the same voltage rating and fuse type but requires solder lug termination instead of quick connect. Selection of this part necessitates verification that the application's current demand does not exceed 10 A and that solder lug termination is compatible with the circuit board or wiring configuration.

Compliance Considerations:

The original BK/HTB-24I is RoHS non-compliant. If regulatory compliance with RoHS3 or REACH standards is required, the 03453LF1H is the appropriate selection. The BK16-HTJ-601I is RoHS compliant but does not match the current rating of the original part.

Frequently Asked Questions (FAQ)

Q: Can the 03453LF1H directly replace the BK/HTB-24I without circuit modification?

A: Yes. The 03453LF1H maintains identical electrical ratings (20 A, 250V), fuse accommodation (0.25" Dia x 1.26" L), mounting configuration (panel mount), and termination style (quick connect 0.187"). No circuit modification is required.

Q: What is the primary difference between the BK16-HTJ-601I and the BK/HTB-24I?

A: The BK16-HTJ-601I operates at 10 A current rating compared to the 20 A rating of the BK/HTB-24I. Additionally, it uses solder lug termination instead of quick connect termination. These differences limit its use to applications with lower current requirements and compatible termination methods.

Q: Is the 03453LF1H suitable for applications requiring RoHS compliance?

A: Yes. The 03453LF1H is RoHS3 compliant and REACH unaffected, making it suitable for applications with environmental compliance requirements.

Q: Can the BK16-HTJ-601I be used in a 20 A circuit?

A: No. The BK16-HTJ-601I is rated for 10 A maximum. Using it in a 20 A circuit exceeds its current rating and creates a safety hazard.

Q: Are all three parts compatible with 3AG and 1/4" x 1-1/4" fuses?

A: The BK/HTB-24I and 03453LF1H are both specified for use with 3AG and 1/4" x 1-1/4" (SFE-20) fuses. The BK16-HTJ-601I accommodates 1/4" diameter fuses but does not specify 3AG compatibility.

Q: What termination method should be selected for new designs?

A: Quick connect termination (0.187" / 4.7mm) is specified for both the BK/HTB-24I and 03453LF1H. This termination style is preferred for panel mount applications requiring tool-free installation and removal.