BK/HTB-34 Cartridge Fuse Holder Equivalent & Substitute Parts

Part Overview

The BK/HTB-34 is a cartridge fuse holder manufactured by Eaton - Electronics Division, designed for panel mount applications with a 20 A current rating at 250V. This single-circuit holder accommodates 0.25" diameter by 1.26" length cartridge fuses (6.35mm x 32mm) and features quick connect termination with 0.187" (4.7mm) spade terminals.

The BK/HTB-34 carries an obsolete product status. Locating equivalent substitute parts is necessary to support ongoing maintenance, repair, and replacement requirements for systems utilizing this fuse holder configuration.

Substiute Parts

BK/HTB-34

Eaton - Electronics DivisionIn Stock: 896BK/HTB-34 Datasheet

Current PartRFQ

BK/HTB-34-R

Eaton - Electronics DivisionIn Stock: 706BK/HTB-34-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/HTB-34 is determined by strict equivalence across the following electrical and mechanical parameters:

• Current Rating: 20 A (exact match required)
• Voltage Rating: 250V (exact match required)
• Fuse Size: 0.25" Dia x 1.26" L / 6.35mm x 32mm (exact match required)
• Fuse Type: Cartridge (exact match required)
• Number of Circuits: 1 (exact match required)
• Mounting Type: Panel Mount (exact match required)
• Termination Style: Quick Connect - 0.187" (4.7mm) (exact match required)

Parts meeting all of these criteria are classified as direct substitutes and are electrically and mechanically interchangeable with the BK/HTB-34.

Parameter Comparison

Engineering Selection Recommendations

The BK/HTB-34-R is the direct substitute for the obsolete BK/HTB-34. Both parts are manufactured by Eaton - Electronics Division within the HTB series and maintain identical electrical and mechanical specifications across all critical parameters: 20 A current rating, 250V voltage rating, cartridge fuse accommodation (0.25" Dia x 1.26" L), single-circuit configuration, panel mount orientation, and quick connect 0.187" (4.7mm) termination.

The primary distinction between these parts is product status and regulatory compliance. The BK/HTB-34-R carries active product status, ensuring ongoing availability and supply chain support. Additionally, the BK/HTB-34-R is RoHS Compliant, whereas the BK/HTB-34 is RoHS non-compliant. Both parts share identical moisture sensitivity classification (MSL 1 - Unlimited) and export control designation (ECCN EAR99).

For new designs, maintenance programs, and replacement applications, the BK/HTB-34-R is the appropriate selection due to its active status and regulatory compliance posture.

Frequently Asked Questions (FAQ)

Q: Can the BK/HTB-34-R be used as a direct replacement for the BK/HTB-34?

A: Yes. The BK/HTB-34-R is a direct substitute. Both parts are electrically and mechanically identical across all critical parameters: current rating (20 A), voltage rating (250V), fuse size (0.25" Dia x 1.26" L), fuse type (cartridge), circuit count (1), mounting type (panel mount), and termination style (quick connect 0.187" spade). No circuit modifications or mechanical adaptations are required.

Q: What is the difference between the BK/HTB-34 and BK/HTB-34-R?

A: The BK/HTB-34 is obsolete, while the BK/HTB-34-R is active. The BK/HTB-34-R is RoHS Compliant, whereas the BK/HTB-34 is RoHS non-compliant. All electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: The BK/HTB-34-R is supplied in bulk packaging. Packaging configuration should be verified against procurement requirements for your specific application.

Q: What fuse types are compatible with both the BK/HTB-34 and BK/HTB-34-R?

A: Both holders accommodate 3AG cartridge fuses with dimensions 1/4" x 1-1/4" (SFE-20 designation). The 0.25" diameter by 1.26" length specification (6.35mm x 32mm) defines the compatible fuse envelope.

Q: Is the BK/HTB-34 still available for purchase?

A: The BK/HTB-34 carries obsolete product status. The BK/HTB-34-R, with active product status, is the recommended source for new procurement and ongoing supply requirements.

Q: Are both parts subject to the same export control regulations?

A: Yes. Both the BK/HTB-34 and BK/HTB-34-R are classified under ECCN EAR99 and share the same HTSUS code (8538.90.8180).