Eaton BK/HRK Cartridge Fuse Holder 32V 15A Equivalent & Substitute Parts

Part Overview

The Eaton BK/HRK is a 15 A, 32V cartridge fuse holder designed for free hanging (in-line) mounting applications. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing procurement and system maintenance. The BK/HRK accommodates 0.25" diameter cartridge fuses with lengths ranging from 0.875" to 1.26" (6.35mm x 22.23mm to 32mm), compatible with 3AG, 7AG, and 8AG fuse types. Substitution is required for new designs and legacy system support where original inventory is depleted.

Substiute Parts

BK/HRK

Eaton - Electronics DivisionIn Stock: 682BK/HRK Datasheet

Current PartRFQ

BK/HRK-R

Eaton - Electronics DivisionIn Stock: 1329BK/HRK-R Datasheet

MFR RecommendedRFQ

HRK-R

Eaton - Electronics DivisionIn Stock: 1078HRK-R Datasheet

MFR RecommendedRFQ

01500145Z

Littelfuse Inc.In Stock: 79701500145Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the BK/HRK is based on the following critical parameters that must remain constant across equivalent parts:

Mandatory Matching Parameters:

• Voltage Rating: 32V
• Fuse Type: Cartridge
• Mounting Type: Free Hanging (In-Line)
• Number of Circuits: 1
• Termination Style: Wire Leads
• Fuse Size Compatibility: 0.25" diameter

Substitution Categories:

Category 1: Direct Equivalents (Identical Specifications) Parts BK/HRK-R and HRK-R are direct equivalents manufactured by Eaton - Electronics Division. Both maintain identical electrical and mechanical parameters to the BK/HRK, including 15 A current rating, 32V voltage, and compatible fuse dimensions. These parts differ only in product status (active vs. obsolete) and packaging configuration (bulk). Both are suitable for one-to-one replacement.

Category 2: Similar Substitutes (Parameter Variance) Part 01500145Z (Littelfuse Inc., Series 150) operates at identical voltage (32V) and maintains the same mounting type and termination style. However, this part has a higher current rating of 20 A and accommodates a slightly different fuse size range (0.625" to 1.26" length versus 0.875" to 1.26"). This part is classified as a similar substitute due to current rating elevation and fuse length variance at the lower end of the range.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): Select BK/HRK-R or HRK-R for applications requiring identical electrical and mechanical specifications. Both parts are manufactured by Eaton - Electronics Division and maintain full compatibility with the original BK/HRK design. BK/HRK-R carries ROHS3 compliance certification, while HRK-R maintains RoHS compliance. Both parts are active products with established supply chains. BK/HRK-R offers higher inventory availability (1264 units) compared to HRK-R (997 units).

For Similar Substitution (When Direct Equivalents Unavailable): The Littelfuse 01500145Z may be considered when direct Eaton equivalents are unavailable. This part maintains identical voltage rating (32V), mounting configuration (free hanging in-line), and termination style (wire leads). The 01500145Z carries a higher current rating (20 A versus 15 A), which provides operational margin in current-limited applications. The fuse size range variance (0.625" minimum length versus 0.875") must be evaluated against specific fuse inventory and application requirements. The 01500145Z holds ROHS3 compliance and REACH unaffected status.

Compliance Considerations: All substitute parts maintain RoHS compliance or ROHS3 compliance, suitable for applications with environmental and regulatory requirements. The BK/HRK original part and HRK-R maintain standard RoHS compliance, while BK/HRK-R and 01500145Z carry enhanced ROHS3 certification. All parts are classified under ECCN EAR99 and HTSUS 8538.90.8180.

Frequently Asked Questions (FAQ)

Q: Can BK/HRK-R and HRK-R be used interchangeably with the original BK/HRK?

A: Yes. Both BK/HRK-R and HRK-R are direct equivalents with identical electrical ratings (15 A, 32V), fuse type (cartridge), fuse dimensions (0.25" diameter, 0.875" to 1.26" length), mounting type (free hanging in-line), and termination style (wire leads). The primary difference is product status (active versus obsolete) and packaging format (bulk). No circuit modifications are required.

Q: What is the difference between BK/HRK-R and HRK-R?

A: Both parts are manufactured by Eaton - Electronics Division and share identical specifications. The designation difference reflects internal Eaton part numbering conventions. BK/HRK-R includes the "BK/" prefix, while HRK-R uses the series designation alone. Both are active products suitable for new procurement. BK/HRK-R maintains higher inventory levels.

Q: Can the Littelfuse 01500145Z replace the BK/HRK in all applications?

A: The 01500145Z is a similar substitute, not a direct equivalent. It maintains the same voltage (32V), mounting type (free hanging in-line), and termination style (wire leads). However, it has a higher current rating (20 A versus 15 A) and a different fuse size range (0.625" to 1.26" length versus 0.875" to 1.26"). The 01500145Z is suitable for applications where the higher current rating does not create circuit protection conflicts and where fuse inventory includes sizes compatible with the 0.625" minimum length specification.

Q: What are the fuse compatibility differences between these parts?

A: The BK/HRK, BK/HRK-R, and HRK-R accommodate cartridge fuses with 0.25" diameter and lengths from 0.875" to 1.26" (compatible with 3AG, 7AG, 8AG types). The Littelfuse 01500145Z accommodates the same 0.25" diameter but accepts lengths from 0.625" to 1.26" (compatible with 1AG, 3AG, 7AG, 8AG, SFE-14, SFE-6 types). The 01500145Z's lower minimum length allows use of shorter fuse types not compatible with the original BK/HRK design.

Q: Are there packaging differences between the substitute parts?

A: The original BK/HRK is listed with packaging designation "-" (not specified). BK/HRK-R and HRK-R are supplied in bulk packaging. The Littelfuse 01500145Z is supplied in bulk packaging with a 6-piece configuration noted in the description. Packaging format does not affect electrical or mechanical compatibility; it reflects procurement and distribution methods.

Q: What compliance certifications apply to each part?

A: The BK/HRK and HRK-R carry RoHS compliance certification. The BK/HRK-R and 01500145Z carry ROHS3 compliance certification, representing enhanced environmental compliance standards. All parts are classified under ECCN EAR99 and HTSUS 8538.90.8180. The 01500145Z additionally carries REACH unaffected status.

Q: Which substitute part should be selected for new designs?

A: For new designs requiring identical specifications to the original BK/HRK, select BK/HRK-R or HRK-R. Both are active Eaton products with established supply chains and full specification compatibility. BK/HRK-R is recommended due to higher inventory availability. For applications where current rating elevation is acceptable and fuse size flexibility is beneficial, the Littelfuse 01500145Z is a viable alternative with active product status and enhanced ROHS3 compliance.