Equivalent & Substitute Parts for BK/ABC-V-4-R Ceramic Cartridge Fuse

Part Overview

The BK/ABC-V-4-R is a 4 A ceramic cartridge fuse manufactured by Eaton - Electronics Division, rated for 250 V AC and 125 V DC operation. This fast-blow fuse is designed for through-hole mounting in 3AB/3AG package format with dimensions of 1/4" x 1-1/4" (6.76mm x 32.82mm). The part maintains active product status and is RoHS3 compliant. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when supply chain optimization is required.

Substiute Parts

BK/ABC-V-4-R

Eaton - Electronics DivisionIn Stock: 1233BK/ABC-V-4-R Datasheet

Current PartRFQ

0324004.HXP

Littelfuse Inc.In Stock: 11540324004.HXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/ABC-V-4-R are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Electrical Parameters (Must Match Exactly):

• Current Rating: 4 A
• Voltage Rating AC: 250 V
• Voltage Rating DC: 125 V
• Response Time: Fast Blow
• Fuse Type: Cartridge, Ceramic

Mechanical Parameters (Must Match Exactly):

• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial)
• Mounting Type: Through Hole

Compliance Parameters (Must Be Maintained or Enhanced):

• RoHS3 Compliance required
• Regulatory approvals must include CSA and UL or equivalent

The substitute part 0324004.HXP from Littelfuse Inc. meets all critical electrical and mechanical requirements for direct substitution in applications currently using the BK/ABC-V-4-R.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: BK/ABC-V-4-R (Eaton)

Use the original Eaton BK/ABC-V-4-R when:

• Existing inventory is available
• Design specifications explicitly require Eaton components
• Supply chain continuity with current manufacturer is prioritized

Substitute Part: 0324004.HXP (Littelfuse)

The Littelfuse 0324004.HXP is electrically and mechanically equivalent for direct substitution. Selection of this substitute is based on:

• Identical current rating, voltage ratings (AC/DC), and response time characteristics
• Identical package format and through-hole mounting configuration
• Full compliance with RoHS3 environmental standards
• Active product status with established supply availability
• Enhanced regulatory approvals (CE, K-MARK, PSE in addition to CSA and UL)
• Higher breaking capacity rating (750A AC vs. 200A AC) provides additional safety margin
• Specified operating temperature range (-55°C ~ 125°C) provides documented thermal performance

Both parts are suitable for applications requiring 4 A ceramic cartridge fuses with 250 V AC / 125 V DC ratings in 3AB/3AG package format.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0324004.HXP be used as a direct replacement for the Eaton BK/ABC-V-4-R?

A: Yes. Both parts share identical electrical ratings (4 A, 250 V AC, 125 V DC), identical fuse type (ceramic cartridge, fast-blow), and identical mechanical specifications (3AB/3AG package, 1/4" x 1-1/4" axial, through-hole mounting). Both are RoHS3 compliant and hold active product status.

Q: What are the differences between these two parts?

A: The primary differences are: (1) Manufacturer - Eaton vs. Littelfuse; (2) Breaking capacity - Littelfuse rated at 750A AC compared to Eaton's 200A AC; (3) Melting I²t values differ (10.4 vs. 22.28); (4) DC cold resistance differs (0.047 Ohms vs. 0.031 Ohms); (5) Littelfuse includes additional regulatory approvals (CE, K-MARK, PSE); (6) Littelfuse specifies operating temperature range (-55°C ~ 125°C). These differences do not affect substitution eligibility for standard circuit protection applications.

Q: Are the physical dimensions identical?

A: The dimensions are functionally equivalent. Eaton specifies 0.266" Dia x 1.292" L (6.76mm x 32.82mm); Littelfuse specifies 0.275" Dia x 1.288" L (6.99mm x 32.72mm). Both conform to the 3AB/3AG standard package format and fit through-hole mounting positions designed for 1/4" x 1-1/4" cartridge fuses.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection should be based on supply chain strategy, existing component qualification, and manufacturer preference. Both parts meet identical electrical and mechanical requirements and hold equivalent regulatory compliance status.

Q: Are there any temperature considerations for substitution?

A: The Littelfuse part specifies an operating temperature range of -55°C ~ 125°C. The Eaton part does not specify an operating temperature range in the provided data. For applications with defined temperature requirements, the Littelfuse specification provides documented thermal performance limits.

Q: What is the significance of the different Melting I²t values?

A: Melting I²t is a thermal characteristic that affects fuse response time under specific fault conditions. The Littelfuse part (10.4) has a lower value than the Eaton part (22.28), indicating faster thermal response. Both values are within acceptable ranges for 4 A fast-blow ceramic cartridge fuses and do not prevent substitution in standard circuit protection applications.

Q: Do both parts have the same regulatory approvals?

A: Both parts hold CSA and UL approvals. The Littelfuse part includes additional approvals: CE, K-MARK, and PSE. These additional certifications expand the geographic and market applicability of the Littelfuse part without affecting its use in applications requiring only CSA and UL compliance.