Equivalent & Substitute Parts: BK/HTB-44-R

Part Overview

The BK/HTB-44-R is a cartridge fuse holder manufactured by Eaton - Electronics Division, rated for 20 A at 250V with panel mount configuration. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system maintenance and new design implementations. The HTB series fuse holder accommodates 3AG cartridge fuses (0.25" Dia x 1.26" L) and features quick connect termination suitable for standard panel-mounted electrical distribution applications.

Substiute Parts

BK/HTB-44-R

Eaton - Electronics DivisionIn Stock: 1195BK/HTB-44-R Datasheet

Current PartRFQ

03453LS1H

Littelfuse Inc.In Stock: 112103453LS1H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/HTB-44-R is determined by strict equivalence across the following 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)
• Compatible Fuse Standard: 3AG, 1/4" x 1-1/4" (SFE-20) (exact match required)

Only components meeting all specified parameters are classified as direct substitutes. No functional or performance deviations are permitted in substitute selection.

Parameter Comparison

Engineering Selection Recommendations

The 03453LS1H (Littelfuse Inc.) is a direct functional equivalent to the obsolete BK/HTB-44-R. Both components satisfy identical electrical and mechanical specifications across all critical parameters: 20 A current rating, 250V voltage rating, 0.25" Dia x 1.26" L cartridge fuse accommodation, single-circuit configuration, panel mount orientation, and quick connect 0.187" termination.

The 03453LS1H holds active product status, ensuring continued availability and supply chain reliability. The substitute component carries ROHS3 compliance and REACH unaffected certification, meeting contemporary regulatory requirements. The specified copper alloy contact material with tin finish provides equivalent electrical performance and contact reliability to the original design.

Selection of the 03453LS1H is appropriate for replacement applications, system redesigns, and new installations requiring 20 A, 250V single-circuit cartridge fuse holder functionality with panel mount configuration.

Frequently Asked Questions (FAQ)

Q: What makes the 03453LS1H a valid substitute for the BK/HTB-44-R?

A: The 03453LS1H meets all critical electrical and mechanical parameters: identical 20 A current rating, 250V voltage rating, 0.25" Dia x 1.26" L fuse size, cartridge fuse type, single-circuit configuration, panel mount mounting type, and quick connect 0.187" termination style. Both components accommodate 3AG, 1/4" x 1-1/4" (SFE-20) fuses.

Q: Why is the BK/HTB-44-R classified as obsolete?

A: The BK/HTB-44-R is designated obsolete by Eaton - Electronics Division. The 03453LS1H, manufactured by Littelfuse Inc., is an active product offering equivalent functionality with current manufacturing support.

Q: Are there any compliance differences between the two components?

A: The 03453LS1H carries ROHS3 compliance and REACH unaffected certification. The BK/HTB-44-R compliance status is not specified in available documentation. Both components share identical ECCN (EAR99) and HTSUS (8538.90.8180) classifications.

Q: Can the 03453LS1H be used in existing installations designed for the BK/HTB-44-R?

A: Yes. Identical electrical ratings (20 A, 250V), fuse accommodation (0.25" Dia x 1.26" L cartridge), mounting type (panel mount), and termination style (quick connect 0.187") ensure direct compatibility in existing circuit configurations.

Q: What is the contact material specification for the BK/HTB-44-R?

A: Contact material for the BK/HTB-44-R is not specified in available documentation. The 03453LS1H specifies copper alloy contact material with tin finish.

Q: Are moisture sensitivity considerations relevant to component selection?

A: The BK/HTB-44-R specifies MSL 1 (Unlimited). The 03453LS1H lists moisture sensitivity as Not Applicable. Both designations indicate no moisture-related handling restrictions for these fuse holder components.