Eaton BK/HTB-38M Cartridge Fuse Holder Equivalent & Substitute Parts

Part Overview

The Eaton BK/HTB-38M is a 16 A, 250V cartridge fuse holder designed for panel mount applications with 5mm x 20mm fuse compatibility. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing procurement and system maintenance. The HTB series fuse holder provides single-circuit protection through quick connect termination suitable for industrial and commercial electrical applications.

Substiute Parts

BK/HTB-38M

Eaton - Electronics DivisionIn Stock: 990BK/HTB-38M Datasheet

Current PartRFQ

BK/HTB-38M-R

Eaton - Electronics DivisionIn Stock: 4102BK/HTB-38M-R Datasheet

DirectRFQ

BK/HTB-48M-R

Eaton - Electronics DivisionIn Stock: 1303BK/HTB-48M-R Datasheet

DirectRFQ

03455LS7H

Littelfuse Inc.In Stock: 102703455LS7H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/HTB-38M is determined by the following critical parameters:

Direct Equivalents (Eaton HTB Series): Parts maintaining identical electrical specifications (16 A, 250V), fuse size (5mm x 20mm), mounting configuration (panel mount), termination style (quick connect 0.250"), and single-circuit design. These parts differ only in product status (active vs. obsolete) and RoHS compliance level.

Similar Substitutes (Cross-Manufacturer): Parts from alternative manufacturers meeting the same mechanical form factor (5mm x 20mm cartridge, panel mount, quick connect termination) and voltage rating (250V), but with different current ratings. These require application-level verification of current compatibility.

The following parameters remain constant across all substitute candidates:

• Fuse size: 5mm x 20mm cartridge
• Voltage: 250V
• Mounting: Panel mount
• Termination: Quick Connect - 0.250" (6.3mm)
• Number of circuits: 1
• Fuse type: Cartridge

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: BK/HTB-38M-R

The BK/HTB-38M-R is the direct active equivalent of the obsolete BK/HTB-38M. This Eaton part maintains identical electrical and mechanical specifications (16 A, 250V, 5mm x 20mm cartridge, panel mount, quick connect termination). The primary distinction is product status (active vs. obsolete) and RoHS compliance upgrade. With 4056 units in stock and active product status, BK/HTB-38M-R is the preferred replacement for new designs and ongoing procurement.

Secondary Recommendation: BK/HTB-48M-R

The BK/HTB-48M-R provides an alternative within the Eaton HTB series, maintaining all mechanical and electrical specifications identical to BK/HTB-38M-R. This part carries ROHS3 compliance certification and REACH unaffected status. Selection between BK/HTB-38M-R and BK/HTB-48M-R depends on specific compliance documentation requirements for the end application.

Cross-Manufacturer Alternative: 03455LS7H

The Littelfuse 03455LS7H shares identical mechanical form factor and mounting configuration but operates at 10 A current rating versus the 16 A specification of the main part. This part is suitable only for applications where the circuit protection requirement is 10 A or lower. The 03455LS7H provides ROHS3 compliance and REACH unaffected status with copper alloy contacts finished in tin.

Frequently Asked Questions (FAQ)

Q: Can BK/HTB-38M-R be used as a direct replacement for BK/HTB-38M?

A: Yes. BK/HTB-38M-R is the active equivalent with identical electrical ratings (16 A, 250V), fuse size (5mm x 20mm), mounting type (panel mount), and termination style (quick connect 0.250"). The parts differ only in product status and RoHS compliance level.

Q: What is the difference between BK/HTB-38M-R and BK/HTB-48M-R?

A: Both parts maintain identical electrical and mechanical specifications. The distinction lies in packaging (bag vs. bulk) and compliance certifications. BK/HTB-48M-R carries ROHS3 compliance and REACH unaffected status. Selection depends on procurement and regulatory requirements.

Q: Is 03455LS7H compatible with the BK/HTB-38M application?

A: 03455LS7H shares the same mechanical form factor (5mm x 20mm cartridge, panel mount, quick connect termination) and voltage rating (250V). However, the current rating differs: 03455LS7H is rated for 10 A while BK/HTB-38M is rated for 16 A. This part is compatible only for applications requiring 10 A protection or lower.

Q: Why is the BK/HTB-38M classified as obsolete?

A: Product obsolescence is determined by manufacturer discontinuation. The active equivalents BK/HTB-38M-R and BK/HTB-48M-R provide continued availability with improved compliance status.

Q: What packaging options are available for these fuse holders?

A: BK/HTB-38M-R is supplied in bag packaging. BK/HTB-48M-R and 03455LS7H are supplied in bulk packaging. Packaging selection affects inventory management and procurement logistics.

Q: Are all substitute parts RoHS compliant?

A: BK/HTB-38M (main part) is RoHS non-compliant. BK/HTB-38M-R is RoHS compliant. BK/HTB-48M-R and 03455LS7H are ROHS3 compliant. Compliance requirements depend on end-use application and regional regulations.