Equivalent & Substitute Parts for 0FHA0003Z

Part Overview

The 0FHA0003Z is a blade fuse holder manufactured by Littelfuse Inc., rated for 3A at 32V with a single circuit configuration. This component is designed for inline, free-hanging mounting applications using standard ATC/ATO blade fuses with dimensions of 0.75" L x 0.2" W (19.1mm x 5.1mm). The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations.

Substiute Parts

0FHA0003Z

Littelfuse Inc.In Stock: 10220FHA0003Z Datasheet

Current PartRFQ

BK/HHC-R

Eaton - Bussmann Electrical DivisionIn Stock: 1781BK/HHC-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0FHA0003Z is determined by the following critical parameters that must remain constant across equivalent alternatives:

• Voltage Rating: 32V (non-negotiable for electrical safety)
• Fuse Type: Blade configuration (mechanical and electrical compatibility)
• Fuse Size: 0.75" L x 0.2" W / 19.1mm x 5.1mm (physical fit requirement)
• Number of Circuits: 1 (functional requirement)
• Mounting Type: Free Hanging (In-Line) (installation method)
• Termination Style: Wire Leads (connection interface)
• For Use With: ATC, ATO (fuse compatibility standard)

The current rating (3A) is application-dependent and may vary based on circuit protection requirements. The substitute part BK/HHC-R maintains all critical parameters while offering a higher current rating of 16A, making it suitable for applications requiring greater current capacity within the same electrical and mechanical framework.

Parameter Comparison

Engineering Selection Recommendations

The BK/HHC-R from Eaton - Bussmann Electrical Division is the designated substitute for the obsolete 0FHA0003Z. Both components share identical electrical ratings (32V), mechanical specifications (blade type, 0.75" x 0.2" fuse size), and mounting configuration (free-hanging, in-line). The BK/HHC-R maintains active product status with full ROHS3 compliance and REACH unaffected certification, ensuring long-term availability and regulatory alignment.

The primary difference is the current rating: the BK/HHC-R is rated for 16A compared to the 0FHA0003Z at 3A. This higher rating does not preclude its use in applications originally designed for 3A protection, as the fuse element selected for installation determines actual circuit protection. The substitute holder accommodates the same ATC/ATO blade fuse form factor, allowing direct mechanical and electrical interchange.

Frequently Asked Questions (FAQ)

Q: Can the BK/HHC-R directly replace the 0FHA0003Z in existing applications?

A: Yes. Both components accept identical ATC/ATO blade fuses with 0.75" x 0.2" dimensions, operate at 32V, and use wire lead termination. The physical mounting footprint and electrical interface are compatible. The circuit protection level is determined by the fuse element installed, not the holder rating.

Q: Why does the substitute have a higher current rating (16A vs. 3A)?

A: The holder current rating indicates the maximum current the holder itself can safely conduct. The actual circuit protection is provided by the fuse element installed in the holder. A 3A fuse can be installed in a 16A-rated holder without affecting protection performance.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant. The BK/HHC-R additionally carries REACH unaffected certification. Both are classified under the same HTSUS code (8538.90.8180) and ECCN (EAR99).

Q: What is the packaging difference?

A: The 0FHA0003Z was supplied in standard packaging, while the BK/HHC-R is available in bulk packaging. This does not affect component functionality or electrical performance.

Q: Is the BK/HHC-R available for immediate procurement?

A: Yes. The BK/HHC-R is classified as active product status with documented inventory availability, unlike the obsolete 0FHA0003Z.