BP/HMK Fuse Holder Cartridge 32V 30A In-Line Equivalent & Substitute Parts

Part Overview

The BP/HMK is a cartridge fuse holder manufactured by Eaton - Bussmann Electrical Division, rated for 30 A at 32V with a single circuit configuration. This free-hanging in-line fuse holder accepts 0.25" diameter x 1.26" length (6.35mm x 32mm) cartridge fuses, commonly referenced as 3AG or 1/4" x 1-1/4" (SFE-20) fuses. The product is classified as obsolete, making identification of active equivalent parts essential for ongoing system maintenance and component procurement.

Substiute Parts

BP/HMK

Eaton - Bussmann Electrical DivisionIn Stock: 812BP/HMK Datasheet

Current PartRFQ

BK/HFB-R

Eaton - Electronics DivisionIn Stock: 10339BK/HFB-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BP/HMK is determined by strict equivalence across the following electrical and mechanical parameters:

• Current Rating: 30 A (exact match required)
• Voltage Rating: 32V (exact match required)
• Fuse Size: 0.25" Dia x 1.26" L (exact match required)
• Number of Circuits: 1 (exact match required)
• Mounting Type: Free Hanging (In-Line) (exact match required)
• Fuse Type: Cartridge (exact match required)
• Compatible Fuse Reference: 3AG, 1/4" x 1-1/4" (SFE-20) (exact match required)

The BK/HFB-R meets all substitution criteria. Variations in termination style (Wire Leads vs. Crimp), contact material, and contact finish do not affect functional compatibility within the specified electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

The BK/HFB-R is a direct functional equivalent to the obsolete BP/HMK. Both components meet identical electrical specifications (30 A, 32V) and mechanical requirements (cartridge fuse holder, 0.25" x 1.26" fuse accommodation, single circuit, free-hanging in-line mounting). The BK/HFB-R holds active product status, ensuring ongoing availability and supply chain continuity.

The primary difference between the two parts is termination style: the BP/HMK uses wire leads, while the BK/HFB-R uses crimp termination. This difference requires evaluation within the context of the specific application circuit design. Both parts maintain identical regulatory compliance (REACH Unaffected, EAR99 classification, HTSUS 8538.90.8180).

Frequently Asked Questions (FAQ)

Q: Can the BK/HFB-R directly replace the BP/HMK in all applications?

A: The BK/HFB-R is electrically and mechanically equivalent to the BP/HMK across all specified parameters. However, the termination style differs (crimp vs. wire leads). Circuit integration must accommodate the crimp termination method of the BK/HFB-R.

Q: What fuses are compatible with both the BP/HMK and BK/HFB-R?

A: Both fuse holders accept 3AG cartridge fuses with dimensions 0.25" diameter x 1.26" length (6.35mm x 32mm), also referenced as 1/4" x 1-1/4" (SFE-20) fuses.

Q: Why is the BP/HMK listed as obsolete?

A: The BP/HMK has been discontinued by the manufacturer. The BK/HFB-R is the active equivalent part available for new procurement and ongoing system support.

Q: Are there regulatory or compliance differences between the two parts?

A: No. Both parts share identical REACH status (REACH Unaffected), ECCN classification (EAR99), and HTSUS code (8538.90.8180).

Q: What is the difference between wire leads and crimp termination?

A: Wire leads are pre-attached conductors for direct soldering or connection. Crimp termination requires the use of crimp connectors or terminals to establish electrical connections. The selection depends on the circuit assembly method and connector interface design.