BK/HTB-62 Cartridge Fuse Holder Equivalent & Substitute Parts

Part Overview

The BK/HTB-62 is a cartridge fuse holder manufactured by Eaton - Electronics Division, designed for panel mount applications with a 20 A current rating at 250V. 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 currently active in production with 682 pieces available in new original stock. Equivalent substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when specific compliance requirements must be met.

Substiute Parts

BK/HTB-62

Eaton - Electronics DivisionIn Stock: 741BK/HTB-62 Datasheet

Current PartRFQ

03453RF2H

LittelfuseIn Stock: 134303453RF2H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/HTB-62 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 20 A
• Voltage Rating: 250V
• Fuse Size: 0.25" Dia x 1.26" L (6.35mm x 32mm)
• Number of Circuits: 1
• Mounting Type: Panel Mount
• Termination Style: Quick Connect - 0.187" (4.7mm)
• Compatible Fuse Standard: 3AG, 1/4" x 1-1/4" (SFE-20)

The substitute part 03453RF2H (Littelfuse, Series 345) meets all mandatory parameters and is therefore classified as a direct equivalent. Both parts are active products with identical electrical and mechanical specifications, enabling interchangeable use in applications requiring a 20 A, 250V single-circuit cartridge fuse holder with panel mount configuration.

Parameter Comparison

Engineering Selection Recommendations

BK/HTB-62 (Eaton - Electronics Division): Select this part for applications where RoHS non-compliant components are acceptable or required by existing design specifications. The part is active in production with established supply availability (682 pieces in stock). Use this part number when maintaining compatibility with existing Eaton HTB series installations.

03453RF2H (Littelfuse): Select this part for applications requiring ROHS3 compliance. The Littelfuse 345 series substitute provides identical electrical and mechanical performance while meeting modern environmental and regulatory standards. This part is also active in production with higher inventory availability (1264 pieces in stock). The substitute includes specified contact material (Copper Alloy) and contact finish (Tin), providing additional material traceability for quality-critical applications.

Both parts are functionally interchangeable based on electrical ratings, mechanical dimensions, and termination specifications. Selection between them should be based on compliance requirements and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can the 03453RF2H substitute directly replace the BK/HTB-62 in existing installations?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical current ratings (20 A), voltage ratings (250V), fuse sizes (0.25" Dia x 1.26" L), mounting types (panel mount), and termination styles (Quick Connect - 0.187"). No circuit modifications are required for substitution.

Q: What is the primary difference between these two parts?

A: The primary difference is RoHS compliance status. The BK/HTB-62 is RoHS non-compliant, while the 03453RF2H is ROHS3 compliant. Both parts are functionally identical for electrical and mechanical applications.

Q: Are both parts compatible with 3AG cartridge fuses?

A: Yes. Both the BK/HTB-62 and 03453RF2H are designed for 3AG, 1/4" x 1-1/4" (SFE-20) standard cartridge fuses. They accommodate the same fuse dimensions and specifications.

Q: Which part should be selected for new designs?

A: For new designs, the 03453RF2H (Littelfuse) is recommended due to ROHS3 compliance, which aligns with current environmental regulations and industry standards. However, if legacy system compatibility or specific design constraints require the Eaton part, the BK/HTB-62 remains a valid choice.

Q: Do these parts require any special handling or storage considerations?

A: Both parts have Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited) or Not Applicable, indicating no special moisture control requirements during storage or handling.

Q: Can these parts be used interchangeably in the same panel assembly?

A: Yes. Both parts have identical panel mount specifications and termination styles, allowing them to be used interchangeably in the same panel assembly without mechanical or electrical modifications.