HTB-26I-R Cartridge Fuse Holder Equivalent & Substitute Parts

Part Overview

The HTB-26I-R is a cartridge fuse holder manufactured by Eaton - Electronics Division, designed for panel mount applications in 250V circuits with a 20A current rating. This single-circuit holder accommodates 0.25" diameter by 1.26" length cartridge fuses (3AG, 1/4" x 1-1/4" SFE-20 standard). The product is active and widely stocked, with 1132 pieces available in bulk packaging. Substitute parts are identified when identical electrical and mechanical specifications are maintained across different packaging formats or manufacturer variants, ensuring direct functional equivalence without circuit redesign.

Substiute Parts

HTB-26I-R

Eaton - Electronics DivisionIn Stock: 1225HTB-26I-R Datasheet

Current PartRFQ

BK/HTB-26I-R

Eaton - Electronics DivisionIn Stock: 3898BK/HTB-26I-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HTB-26I-R is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Voltage rating (250V), current rating (20A), and number of circuits (1) must be identical. These parameters define the fuse holder's operational envelope and circuit protection capability.

Mechanical Specifications: Fuse size (0.25" Dia x 1.26" L / 6.35mm x 32mm), mounting type (Panel Mount), and termination style (Quick Connect - 0.250" / 6.3mm) must match exactly. These ensure physical compatibility with the circuit board layout and fuse cartridge insertion.

Functional Specifications: Fuse type (Cartridge) and compatible fuse standard (3AG, 1/4" x 1-1/4" SFE-20) must remain constant.

Compliance & Status: Product must maintain Active status and RoHS compliance certification.

The identified substitute part BK/HTB-26I-R meets all these criteria. The only difference is packaging format (Bulk vs. Box) and inventory availability, which do not affect electrical or mechanical function.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution: BK/HTB-26I-R is a direct functional equivalent to HTB-26I-R. All electrical, mechanical, and compliance specifications are identical. Selection between these parts should be based on packaging requirements and inventory availability.

Packaging Consideration: HTB-26I-R is supplied in Bulk packaging, while BK/HTB-26I-R is supplied in Box packaging. Bulk packaging is typically used for high-volume manufacturing environments, while Box packaging is standard for component distribution and smaller-quantity orders.

Compliance Status: Both parts maintain RoHS compliance (HTB-26I-R: RoHS Compliant; BK/HTB-26I-R: ROHS3 Compliant). ROHS3 represents an updated compliance certification and is fully compatible with RoHS requirements.

Inventory Availability: BK/HTB-26I-R has higher stock availability (3832 pieces) compared to HTB-26I-R (1132 pieces), making it the preferred choice for immediate procurement when packaging format permits.

Frequently Asked Questions (FAQ)

Q: Can BK/HTB-26I-R be used as a direct replacement for HTB-26I-R in existing circuit designs?

A: Yes. BK/HTB-26I-R is electrically and mechanically identical to HTB-26I-R. All specifications including voltage rating (250V), current rating (20A), fuse size (0.25" Dia x 1.26" L), mounting type (Panel Mount), and termination style (Quick Connect - 0.250") are identical. No circuit redesign or board layout modification is required.

Q: What is the difference between Bulk and Box packaging?

A: Bulk packaging is used for high-volume manufacturing shipments without individual component packaging. Box packaging includes standard commercial packaging suitable for distribution and smaller-quantity orders. Both contain identical components with identical specifications.

Q: Are there any compliance differences between HTB-26I-R and BK/HTB-26I-R?

A: Both parts are RoHS compliant. HTB-26I-R carries RoHS Compliant certification, while BK/HTB-26I-R carries ROHS3 Compliant certification. ROHS3 is an updated version of the RoHS standard and maintains full compatibility with RoHS requirements.

Q: What fuse cartridges are compatible with these fuse holders?

A: Both HTB-26I-R and BK/HTB-26I-R accept 3AG standard cartridge fuses with dimensions 1/4" x 1-1/4" (SFE-20 designation). Fuse amperage ratings must not exceed 20A, the current rating of the holder.

Q: Can these fuse holders be used in applications other than 250V circuits?

A: No. Both HTB-26I-R and BK/HTB-26I-R are rated for 250V maximum. Use in higher voltage applications exceeds the component's electrical rating and creates safety hazards.

Q: What is the Quick Connect termination style?

A: Quick Connect - 0.250" (6.3mm) refers to a push-on terminal connection method. The fuse holder accepts 0.250" (6.3mm) diameter male terminals, commonly used in panel-mount electrical assemblies for rapid connection and disconnection without soldering.