HTB-28I-R Equivalent & Substitute Parts Reference

Part Overview

The HTB-28I-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 component is classified as an active product and is RoHS compliant. The HTB-28I-R accommodates 3AG cartridge fuses with dimensions of 0.25" diameter by 1.26" length (6.35mm x 32mm). Substitute parts are identified when identical electrical specifications, mechanical dimensions, and mounting configurations are maintained across alternative part numbers from the same manufacturer.

Substiute Parts

HTB-28I-R

Eaton - Electronics DivisionIn Stock: 732HTB-28I-R Datasheet

Current PartRFQ

BK/HTB-28I-R

Eaton - Electronics DivisionIn Stock: 1221BK/HTB-28I-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HTB-28I-R is determined by strict equivalence across the following critical parameters:

• Voltage Rating: 250V (exact match required)
• Current Rating: 20 A (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 - 0.250" (6.3mm) (exact match required)
• Manufacturer: Eaton - Electronics Division (same manufacturer source)
• RoHS Compliance: RoHS Compliant (regulatory equivalence)

The substitute part BK/HTB-28I-R meets all these criteria and is therefore electrically and mechanically interchangeable with the HTB-28I-R.

Parameter Comparison

Engineering Selection Recommendations

Both the HTB-28I-R and BK/HTB-28I-R are active products from Eaton - Electronics Division with identical electrical and mechanical specifications. Both parts are RoHS compliant and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, indicating no special storage or handling requirements. Selection between these two part numbers can be based on inventory availability and procurement lead times, as they are functionally equivalent for all 250V, 20A, single-circuit panel mount cartridge fuse holder applications using 3AG fuses.

Frequently Asked Questions (FAQ)

Q: Can BK/HTB-28I-R be used as a direct replacement for HTB-28I-R?

A: Yes. Both parts are manufactured by Eaton - Electronics Division and share identical electrical ratings (250V, 20A), mechanical dimensions (0.25" Dia x 1.26" L), fuse type (Cartridge), mounting configuration (Panel Mount), and termination style (Quick Connect - 0.250"). They are direct substitutes.

Q: What fuse types are compatible with these holders?

A: These holders are designed for 3AG cartridge fuses with dimensions of 0.25" diameter by 1.26" length (6.35mm x 32mm). Only fuses meeting these exact dimensions should be used.

Q: Are there any differences in packaging between HTB-28I-R and BK/HTB-28I-R?

A: Both parts are supplied in bulk packaging. The primary difference is inventory availability: HTB-28I-R has 653 pieces in stock, while BK/HTB-28I-R has 1118 pieces in stock.

Q: What is the Quick Connect termination style?

A: The Quick Connect termination uses 0.250" (6.3mm) spade connectors, allowing for rapid connection and disconnection without soldering or specialized tools.

Q: Are these fuse holders suitable for international applications?

A: Both parts are RoHS compliant and carry ECCN EAR99 classification, meeting regulatory requirements for general commercial use. Voltage rating is 250V, which is standard for many international applications.

Q: What is MSL Level 1 (Unlimited)?

A: Moisture Sensitivity Level 1 indicates the component has no moisture sensitivity restrictions. These parts can be stored and handled under standard conditions without special environmental controls.