BK/ABC-V-1/2 Equivalent & Substitute Parts

Part Overview

The BK/ABC-V-1/2 is a 500 mA ceramic cartridge fuse rated for 250 V AC and 125 V DC operation. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing system maintenance and new designs. The fuse features fast-blow response characteristics and is approved by CSA and UL agencies. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts satisfy the same functional requirements within the allowed parameter tolerances for this fuse category.

Substiute Parts

BK/ABC-V-1/2

Eaton - Electronics DivisionIn Stock: 1077BK/ABC-V-1/2 Datasheet

Current PartRFQ

BK/ABC-V-1/2-R

Eaton - Electronics DivisionIn Stock: 756BK/ABC-V-1/2-R Datasheet

DirectRFQ

ABC-V-1/2-R

Eaton - Electronics DivisionIn Stock: 1033ABC-V-1/2-R Datasheet

Parametric EquivalentRFQ

0324.500HXP

Littelfuse Inc.In Stock: 11120324.500HXP Datasheet

DirectRFQ

0324.500MXP

Littelfuse Inc.In Stock: 11520324.500MXP Datasheet

DirectRFQ

0324.500VXP

Littelfuse Inc.In Stock: 10760324.500VXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/ABC-V-1/2 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 500 mA
• Voltage Rating - AC: 250 V
• Voltage Rating - DC: 125 V
• Fuse Type: Cartridge, Ceramic
• Response Time: Fast Blow
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial)
• Mounting Type: Through Hole
• Breaking Capacity @ Rated Voltage: 35A AC, 10kA DC

All identified substitute parts meet these mandatory parameters. Variations in secondary characteristics such as melting I²t, DC cold resistance, RoHS compliance status, and operating temperature range do not disqualify substitution when the primary electrical and mechanical specifications are identical.

Parameter Comparison

Engineering Selection Recommendations

Direct Manufacturer Equivalents (Eaton - Electronics Division):

BK/ABC-V-1/2-R and ABC-V-1/2-R are direct equivalents manufactured by Eaton - Electronics Division. Both parts are active products with ROHS3 compliance, addressing the RoHS non-compliance status of the obsolete BK/ABC-V-1/2. These parts maintain identical electrical specifications and package dimensions. Selection between BK/ABC-V-1/2-R and ABC-V-1/2-R depends on internal part numbering conventions within your organization; both satisfy equivalent functionality.

Cross-Manufacturer Substitutes (Littelfuse Inc.):

The Littelfuse 324 series fuses (0324.500HXP, 0324.500MXP, 0324.500VXP) are functionally equivalent substitutes. These parts meet all mandatory electrical and mechanical parameters. Littelfuse parts provide expanded approval agency coverage (CE, CSA, UL) and specified operating temperature range (-55°C ~ 125°C), which may be advantageous for applications requiring extended temperature operation. All Littelfuse alternatives are ROHS3 compliant and active products.

Compliance Considerations:

For applications subject to RoHS regulations, the obsolete BK/ABC-V-1/2 must be replaced with one of the ROHS3-compliant alternatives. All substitute parts listed satisfy this requirement. For applications requiring CE marking, Littelfuse parts provide this certification in addition to CSA and UL approvals.

Frequently Asked Questions (FAQ)

Q: Can BK/ABC-V-1/2-R be used as a direct replacement for BK/ABC-V-1/2?

A: Yes. BK/ABC-V-1/2-R is a direct equivalent manufactured by the same supplier (Eaton - Electronics Division). It maintains identical electrical ratings (500 mA, 250 V AC, 125 V DC), response time (fast blow), package dimensions (3AB, 3AG, 1/4" x 1-1/4"), and breaking capacity (35A AC, 10kA DC). The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between BK/ABC-V-1/2-R and ABC-V-1/2-R?

A: Both parts are manufactured by Eaton - Electronics Division and are functionally identical. The difference lies in part numbering convention. BK/ABC-V-1/2-R includes the "BK/" prefix, while ABC-V-1/2-R does not. Both are active products with ROHS3 compliance and identical electrical specifications. Selection should be based on your organization's internal part numbering system or supplier availability.

Q: Are Littelfuse 324 series fuses (0324.500HXP, 0324.500MXP, 0324.500VXP) compatible with the BK/ABC-V-1/2?

A: Yes. All three Littelfuse parts are functionally equivalent substitutes. They meet the mandatory electrical specifications (500 mA, 250 V AC, 125 V DC, fast blow response) and package requirements (3AB, 3AG, 1/4" x 1-1/4" axial). Physical dimensions are within acceptable tolerance (0.275" Dia x 1.288" L vs. 0.266" Dia x 1.292" L). All are ROHS3 compliant and active products.

Q: What is the difference between 0324.500HXP, 0324.500MXP, and 0324.500VXP?

A: All three Littelfuse parts share identical electrical ratings, response characteristics, package specifications, and compliance certifications. The differences in part number designations (HXP, MXP, VXP) reflect internal Littelfuse product line variations that do not affect functional equivalence for this application. Selection among these three can be based on supplier availability or internal inventory management.

Q: Can I use these substitutes in applications requiring CE marking?

A: Yes. The Littelfuse 324 series fuses (0324.500HXP, 0324.500MXP, 0324.500VXP) carry CE certification in addition to CSA and UL approvals. The Eaton alternatives (BK/ABC-V-1/2-R and ABC-V-1/2-R) carry CSA and UL approvals but do not list CE certification. For applications requiring CE marking, Littelfuse parts are the appropriate selection.

**Q: Are there any dimensional compatibility concerns