Littelfuse 0FHA0001Z Fuse Holder Blade 32V 20A In-Line

Part Overview

The Littelfuse 0FHA0001Z is a blade fuse holder rated for 20A at 32V, designed for single-circuit in-line applications with free-hanging mounting. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations. The part accommodates standard ATC and ATO blade fuses with 0.75" L x 0.2" W (19.1mm x 5.1mm) dimensions and features wire lead termination.

Substiute Parts

0FHA0001Z

Littelfuse Inc.In Stock: 12050FHA0001Z Datasheet

Current PartRFQ

BK/HHC

Eaton - Bussmann Electrical DivisionIn Stock: 1330BK/HHC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 0FHA0001Z is determined by the following critical parameters:

• Voltage Rating: Must equal or exceed 32V
• Fuse Type and Size: Must accommodate 0.75" L x 0.2" W (19.1mm x 5.1mm) blade fuses (ATC/ATO standard)
• Number of Circuits: Must be single-circuit configuration
• Mounting Type: Must support free-hanging in-line installation
• Termination Style: Must feature wire leads
• Current Rating: The substitute part's current rating establishes the maximum fuse capacity for the holder

The Eaton Bussmann HHC series part meets these substitution criteria with identical mechanical and electrical specifications, with the exception of current rating, which is rated at 16A versus the original 20A specification.

Parameter Comparison

Engineering Selection Recommendations

The Eaton Bussmann BK/HHC fuse holder is the designated substitute for the obsolete Littelfuse 0FHA0001Z. Both components maintain identical mechanical form factors, voltage ratings, and mounting configurations. The substitute part carries active product status, ensuring ongoing availability and supply chain continuity.

The primary distinction between the original and substitute part is the current rating differential: the BK/HHC is rated for 16A maximum versus the 0FHA0001Z at 20A. This difference reflects the maximum fuse capacity each holder is designed to accommodate. When selecting the BK/HHC as a replacement, the system's fuse protection scheme must be evaluated to confirm that 16A fuse compatibility aligns with circuit protection requirements.

Both parts maintain ROHS3 compliance and are suitable for applications requiring blade fuse holders with wire lead termination in 32V systems. The BK/HHC's active status provides superior long-term availability compared to the obsolete 0FHA0001Z.

Frequently Asked Questions (FAQ)

Q: Can the Eaton Bussmann BK/HHC directly replace the Littelfuse 0FHA0001Z in existing designs?

A: Yes, from a mechanical and electrical standpoint. Both holders accommodate identical blade fuse sizes (0.75" L x 0.2" W), feature wire lead termination, and are rated for 32V single-circuit applications. The circuit protection scheme must be reviewed to confirm that the 16A maximum fuse rating of the BK/HHC is appropriate for the application.

Q: What is the significance of the current rating difference between the two parts?

A: The current rating indicates the maximum fuse amperage the holder is designed to safely accommodate. The 0FHA0001Z supports up to 20A fuses, while the BK/HHC supports up to 16A fuses. The actual circuit protection is determined by the fuse element installed, not the holder itself.

Q: Are both parts compatible with ATC and ATO blade fuses?

A: Yes. Both the Littelfuse 0FHA0001Z and Eaton Bussmann BK/HHC are designed to accept standard ATC and ATO blade fuses with 0.75" L x 0.2" W dimensions.

Q: What packaging is available for the substitute part?

A: The Eaton Bussmann BK/HHC is supplied in bulk packaging.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both the original Littelfuse part and the Eaton Bussmann substitute are ROHS3 compliant.