Equivalent & Substitute Parts for BK/HTB-58M

Part Overview

The BK/HTB-58M is a cartridge fuse holder manufactured by Eaton - Electronics Division, designed for 16 A at 250V operation in panel mount applications. This component accommodates 5mm x 20mm cartridge fuses with quick connect termination. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity and ensure design compatibility in new procurement cycles.

Substiute Parts

BK/HTB-58M

Eaton - Electronics DivisionIn Stock: 728BK/HTB-58M Datasheet

Current PartRFQ

BK/HTB-58M-R

Eaton - Electronics DivisionIn Stock: 889BK/HTB-58M-R Datasheet

DirectRFQ

03455HS7H

Littelfuse Inc.In Stock: 84403455HS7H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/HTB-58M is determined by the following critical parameters: voltage rating (250V), fuse size accommodation (5mm x 20mm), mounting configuration (panel mount), termination style (quick connect 0.250"), and circuit count (1 circuit). Parts meeting all these criteria are classified as direct equivalents regardless of manufacturer or current rating variance within the same voltage class.

Direct Equivalent (Same Electrical Specifications):

• BK/HTB-58M-R: Identical electrical and mechanical specifications; active product status

Similar Substitute (Reduced Current Rating):

• 03455HS7H: Meets all mechanical and voltage parameters; current rating reduced to 10 A

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: BK/HTB-58M-R

The BK/HTB-58M-R is the direct functional equivalent of the obsolete BK/HTB-58M. Both parts share identical electrical ratings (16 A, 250V), mechanical dimensions (5mm x 20mm cartridge accommodation), mounting configuration (panel mount), and termination specifications (quick connect 0.250"). The BK/HTB-58M-R maintains active product status and achieves RoHS compliance, making it the preferred selection for new designs and replacement procurement.

Secondary Substitute: 03455HS7H

The 03455HS7H from Littelfuse Inc. provides mechanical and voltage compatibility with the original part. This substitute accommodates the same 5mm x 20mm cartridge fuse format, operates at 250V, and utilizes identical panel mount and quick connect termination. The current rating is reduced to 10 A. This part is suitable only for applications where the circuit current requirement does not exceed 10 A. The 03455HS7H carries ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can BK/HTB-58M-R be used as a direct replacement for BK/HTB-58M?

A: Yes. The BK/HTB-58M-R is a direct equivalent with identical electrical specifications (16 A, 250V), mechanical form factor (5mm x 20mm), mounting type (panel mount), and termination style (quick connect 0.250"). The primary difference is product status (active vs. obsolete) and improved RoHS compliance.

Q: What is the key limitation of the 03455HS7H substitute?

A: The 03455HS7H has a reduced current rating of 10 A compared to the original 16 A specification. This part is compatible only with circuits designed for 10 A or lower operation. All other mechanical and electrical parameters (voltage, fuse size, mounting, termination) remain compatible.

Q: Are there packaging differences between the substitute parts?

A: BK/HTB-58M-R is supplied in bulk packaging, identical to 03455HS7H. The original BK/HTB-58M packaging specification was not provided in the technical data.

Q: Do all substitute parts support the same fuse cartridge size?

A: Yes. All listed parts accommodate 5mm x 20mm cartridge fuses. Fuse compatibility is maintained across all substitutes.

Q: What compliance certifications should be considered for new designs?

A: BK/HTB-58M-R achieves RoHS compliance. The 03455HS7H achieves ROHS3 compliance and carries REACH unaffected status. The original BK/HTB-58M is RoHS non-compliant. For applications requiring regulatory compliance, either active substitute is appropriate.