BK/HTB-28I Cartridge Fuse Holder Equivalent & Substitute Parts

Part Overview

The BK/HTB-28I is a cartridge fuse holder manufactured by Eaton - Electronics Division, designed for panel mount applications. This 20 A, 250V single-circuit holder accommodates 0.25" diameter by 1.26" length cartridge fuses (6.35mm x 32mm) with quick connect termination. The product is active and currently in stock with 640 units available. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when specific compliance requirements must be met.

Substiute Parts

BK/HTB-28I

Eaton - Electronics DivisionIn Stock: 714BK/HTB-28I Datasheet

Current PartRFQ

BK/HTB-28I-R

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

DirectRFQ

03453LF7H

Littelfuse Inc.In Stock: 132403453LF7H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/HTB-28I cartridge fuse holder are qualified based on electrical and mechanical parameter equivalence. All substitute parts must match the following critical parameters:

• Current Rating: 20 A
• Voltage Rating: 250V
• Fuse Size: 0.25" Dia x 1.26" L (6.35mm x 32mm)
• Fuse Type: Cartridge
• Number of Circuits: 1
• Mounting Type: Panel Mount
• Termination Style: Quick Connect - 0.250" (6.3mm)
• Compatible Fuse Standard: 3AG, 1/4" x 1-1/4" (SFE-20)

Two substitute parts meet these requirements: BK/HTB-28I-R (Eaton - Electronics Division) and 03453LF7H (Littelfuse Inc.). Both parts are functionally equivalent and mechanically interchangeable with the primary part number.

Parameter Comparison

Engineering Selection Recommendations

BK/HTB-28I-R (Eaton - Electronics Division): This part is a direct equivalent to the primary BK/HTB-28I, sharing the same manufacturer and HTB series designation. The BK/HTB-28I-R is RoHS Compliant, whereas the primary part is RoHS non-compliant. Selection of this substitute is appropriate when RoHS compliance is required. Inventory availability is higher at 1118 units.

03453LF7H (Littelfuse Inc.): This part is a cross-manufacturer equivalent from Littelfuse Inc., series 345. All electrical and mechanical parameters are identical to the primary part. The 03453LF7H is ROHS3 Compliant and REACH Unaffected, providing enhanced regulatory compliance. Contact material is specified as Copper Alloy with Tin finish. Inventory availability is highest at 1283 units.

Selection between substitute parts should be based on manufacturer preference, compliance requirements, and availability constraints. All three parts are functionally and mechanically interchangeable.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts share identical electrical ratings (20 A, 250V), mechanical dimensions (0.25" Dia x 1.26" L), fuse type (Cartridge), mounting configuration (Panel Mount), and termination style (Quick Connect - 0.250"). The primary difference is RoHS compliance status.

Q: Is 03453LF7H mechanically compatible with the BK/HTB-28I?

A: Yes. The 03453LF7H matches all critical parameters: 20 A current rating, 250V voltage rating, 0.25" Dia x 1.26" L fuse size, cartridge fuse type, single circuit, panel mount configuration, and quick connect termination. The part accommodates the same 3AG, 1/4" x 1-1/4" (SFE-20) fuse standard.

Q: What fuse types are compatible with these holders?

A: All three cartridge fuse holders are designed for 3AG standard cartridge fuses with dimensions 1/4" x 1-1/4" (SFE-20), which corresponds to 0.25" diameter by 1.26" length (6.35mm x 32mm).

Q: Are there compliance differences between the three parts?

A: Yes. The BK/HTB-28I is RoHS non-compliant. The BK/HTB-28I-R is RoHS Compliant. The 03453LF7H is ROHS3 Compliant and REACH Unaffected. All three share the same ECCN (EAR99) and HTSUS (8538.90.8180) classifications.

Q: What is the termination configuration for these fuse holders?

A: All three parts use Quick Connect termination with 0.250" (6.3mm) connectors, enabling rapid installation and removal without soldering or additional fastening hardware.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided that the design does not impose specific manufacturer requirements or compliance mandates. All three parts are electrically and mechanically equivalent for the specified 20 A, 250V cartridge fuse holder application.