Eaton BK/HTB-42M-R Fuse Holder: Equivalent & Substitute Parts

Part Overview

The Eaton BK/HTB-42M-R is a cartridge fuse holder designed for panel mount applications with a 16 A current rating at 250V. This single-circuit holder accommodates 5mm x 20mm cartridge fuses and features quick connect termination. The product is Active status and maintains full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when inventory constraints, lead time requirements, or specific application needs necessitate alternative fuse holder configurations within compatible electrical and mechanical parameters.

Substiute Parts

BK/HTB-42M-R

Eaton - Electronics DivisionIn Stock: 721BK/HTB-42M-R Datasheet

Current PartRFQ

BK2-HTC-623M

Eaton - Electronics DivisionIn Stock: 2653BK2-HTC-623M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/HTB-42M-R are identified based on the following critical parameters that determine functional compatibility:

Mandatory Compatibility Parameters:

• Fuse type: Cartridge
• Voltage rating: 250V
• Mounting configuration: Panel Mount
• Number of circuits: 1
• Fuse size accommodation: 5mm diameter

Allowable Variation Parameters:

• Current rating: May differ based on application requirements
• Termination style: Alternative termination methods acceptable if electrical connection integrity is maintained
• Series designation: Different series permitted if electrical and mechanical specifications align

The substitute part BK2-HTC-623M maintains cartridge fuse type, 250V voltage rating, panel mount configuration, and single-circuit design. Differences in current rating (10 A versus 16 A), fuse size specification (5mm diameter versus 5mm x 20mm), and termination style (solder lug versus quick connect) represent controlled variations within the fuse holder category.

Parameter Comparison

Engineering Selection Recommendations

BK/HTB-42M-R Selection Criteria:

• Primary specification when 16 A current rating is required
• Quick connect termination preferred for rapid assembly and field replacement
• RoHS3 compliance required for latest regulatory standards
• 5mm x 20mm fuse size specification must be maintained

BK2-HTC-623M Selection Criteria:

• Applicable when 10 A current rating satisfies circuit protection requirements
• Solder lug termination acceptable for permanent board-level or chassis integration
• RoHS compliance sufficient for applications not requiring RoHS3 designation
• 5mm diameter fuse accommodation suitable for alternative fuse specifications
• Higher inventory availability (2571 pcs) supports expedited procurement

Both parts maintain Active product status, REACH unaffected designation, and identical voltage rating (250V). Selection between these parts depends on current rating requirements, termination method compatibility with circuit design, and assembly methodology (quick connect versus solder attachment).

Frequently Asked Questions (FAQ)

Q: Can BK2-HTC-623M replace BK/HTB-42M-R in all applications?

A: Substitution is valid only when the circuit protection requirement is 10 A or lower. The BK2-HTC-623M current rating of 10 A is lower than the BK/HTB-42M-R rating of 16 A. Applications requiring 16 A protection must use the BK/HTB-42M-R.

Q: What is the difference in termination between these parts?

A: BK/HTB-42M-R uses quick connect termination (0.187" / 4.7mm), enabling tool-free connection and disconnection. BK2-HTC-623M uses solder lug termination, requiring permanent soldering to circuit boards or chassis. Termination method selection depends on assembly process and field serviceability requirements.

Q: Are both parts RoHS compliant?

A: Yes. BK/HTB-42M-R is RoHS3 compliant. BK2-HTC-623M is RoHS compliant. Both meet environmental and hazardous substance restrictions. RoHS3 represents the latest standard iteration.

Q: What fuse sizes are compatible with each holder?

A: BK/HTB-42M-R accommodates 5mm x 20mm cartridge fuses. BK2-HTC-623M accommodates 5mm diameter cartridge fuses. Verify fuse length specifications when selecting replacement fuses for each holder model.

Q: Can these parts be used interchangeably in panel mount applications?

A: Both parts support panel mount configuration. Physical mounting compatibility depends on panel cutout dimensions and bracket specifications. Verify mechanical fit and termination accessibility before installation.

Q: Which part should be selected for new designs?

A: For new designs, specify the part matching the required current rating. If 16 A protection is needed, use BK/HTB-42M-R. If 10 A protection is adequate, either part is acceptable. Consider termination method compatibility with manufacturing processes and field service requirements.