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

Part Overview

The BK/ABC-4 is a 4 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation, manufactured by Eaton - Electronics Division. This component is classified as obsolete, requiring identification of active equivalent and substitute parts for continued system support. The fuse operates with fast-blow response characteristics and requires a 3AB or 3AG holder for installation. Due to its obsolete status, equivalent parts from active product lines must be evaluated for direct substitution or parametric compatibility.

Substiute Parts

BK/ABC-4

Eaton - Electronics DivisionIn Stock: 1036BK/ABC-4 Datasheet

Current PartRFQ

ABC-4-R

Eaton - Electronics DivisionIn Stock: 1021ABC-4-R Datasheet

DirectRFQ

BK/ABC-4-R

Eaton - Electronics DivisionIn Stock: 5076BK/ABC-4-R Datasheet

DirectRFQ

BK/GBB-4-R

Eaton - Electronics DivisionIn Stock: 1474BK/GBB-4-R Datasheet

Parametric EquivalentRFQ

GBB-4-R

Eaton - Electronics DivisionIn Stock: 1053GBB-4-R Datasheet

Parametric EquivalentRFQ

0001.1030

SCHURTER Inc.In Stock: 12550001.1030 Datasheet

SimilarRFQ

0314004.HXP

LittelfuseIn Stock: 11330314004.HXP Datasheet

Parametric EquivalentRFQ

0314004.MXP

Littelfuse Inc.In Stock: 21450314004.MXP Datasheet

Parametric EquivalentRFQ

0314004.VXP

Littelfuse Inc.In Stock: 13640314004.VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/ABC-4 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Current Rating: 4 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Voltage Rating - DC: 125 V (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Mounting Type: Requires Holder (exact match required)

Secondary Compatibility Factors:

• Breaking Capacity @ Rated Voltage: 200A AC minimum, 10kA DC minimum
• Approval Agency: CSA and/or UL certification required
• Physical Dimensions: 0.250" Dia x 1.250" L (6.35mm x 31.75mm)

Substitute parts are classified into two categories:

Direct Manufacturer Substitutes (Eaton - Electronics Division): ABC-4-R, BK/ABC-4-R. These parts maintain identical electrical specifications and are from the same manufacturer with active product status.

Parametric Equivalents (Eaton - Electronics Division): BK/GBB-4-R, GBB-4-R. These parts meet all primary substitution criteria but belong to the GBB series rather than ABC series.

Parametric Equivalents (Littelfuse Inc.): 0314004.HXP, 0314004.MXP, 0314004.VXP. These parts meet all primary substitution criteria from an alternative manufacturer with active product status and extended approval certifications.

Similar Parts (Not Direct Substitutes): 0001.1030 (SCHURTER Inc., glass fuse type). This part does not qualify as a direct substitute due to fuse type difference (glass vs. ceramic) and reduced breaking capacity (1.5kA vs. 200A AC).

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Direct Substitutes (Recommended for Immediate Replacement):

ABC-4-R and BK/ABC-4-R are direct substitutes manufactured by Eaton - Electronics Division. Both parts maintain identical electrical and mechanical specifications to the obsolete BK/ABC-4. Both are active products with ROHS3 compliance. BK/ABC-4-R offers the highest inventory availability (5025 units) among all substitutes. Selection between ABC-4-R and BK/ABC-4-R depends on packaging requirements (both available in bulk) and internal part numbering conventions.

Tier 2 - Parametric Equivalents from Eaton:

BK/GBB-4-R and GBB-4-R are parametric equivalents from the Eaton GBB series. These parts meet all primary electrical and mechanical criteria. GBB-4-R maintains the full 200A AC breaking capacity specification. Both are active products with ROHS3 compliance. These parts are suitable for applications where series designation is not a constraint.

Tier 3 - Parametric Equivalents from Littelfuse:

0314004.HXP, 0314004.MXP, and 0314004.VXP are parametric equivalents from Littelfuse Inc. Series 314. All three parts meet primary electrical and mechanical substitution criteria. All are active products with ROHS3 compliance and extended approval certifications (CE, CSA, K-MARK, PSE, UL). These parts feature higher breaking capacity (750A AC) and extended operating temperature range (-55°C to 125°C). Selection among these three Littelfuse variants depends on specific packaging or supply chain requirements.

Not Recommended:

0001.1030 (SCHURTER Inc.) does not qualify as a substitute due to fuse type difference (glass vs. ceramic) and significantly reduced breaking capacity (1.5kA vs. 200A AC).

Frequently Asked Questions (FAQ)

Q: Can ABC-4-R directly replace BK/ABC-4 without any modifications?

A: Yes. ABC-4-R is a direct substitute with identical electrical specifications (4 A, 250 V AC, 125 V DC), fuse type (ceramic), response time (fast blow), and package dimensions (3AB, 3AG, 1/4" x 1-1/4"). Both require the same holder type. The primary difference is product status (ABC-4-R is active vs. BK/ABC-4 is obsolete) and RoHS compliance (ABC-4-R is ROHS3 compliant).

Q: What is the difference between ABC-4-R and BK/ABC-4-R?

A: Both are direct substitutes from Eaton - Electronics Division with identical electrical and mechanical specifications. The difference is in part numbering convention (ABC-4-R vs. BK/ABC-4-R). Both are active products with ROHS3 compliance. BK/ABC-4-R has higher inventory availability (5025 units vs. 913 units for ABC-4-R).

Q: Can Littelfuse 0314004 series fuses replace the Eaton BK/ABC-4?

A: Yes, the Littelfuse 0314004 series (0314004.HXP, 0314004.MXP, 0314004.VXP) are parametric equivalents. All meet the primary electrical criteria (4 A, 250 V AC, 125 V DC, ceramic, fast blow, 3AB/3AG package). These parts feature higher breaking capacity (750A AC vs. 200A AC) and extended operating temperature range (-55°C to 125°C vs. unspecified for BK/ABC-4). All three Littelfuse variants are functionally equivalent; selection depends on packaging or supply chain preferences.

Q: Why is 0001.1030 not recommended as a substitute?

A: 0001.1030 is a glass cartridge fuse, not ceramic. The BK/ABC-4 is ceramic. Additionally, 0001.1030 has a breaking capacity of only 1.5kA, significantly lower than the BK/ABC-4 specification of 200A AC and 10kA DC. These differences make it unsuitable for direct substitution.

Q: What holder types are compatible with substitute fuses?

A: All substitute parts listed (ABC-4-R, BK/ABC-4-R, BK/GBB-4-R, GBB-4-R, and Littelfuse 0314004 series) use the same package specification: 3AB, 3AG, 1/4" x 1-1/4" (6.35mm x 31.75mm). All require a compatible 3AB or 3AG holder. No holder modifications are necessary when switching between these substitutes.

Q: Are all substitute parts RoHS compliant?

A: The obsolete BK/ABC-4 is RoHS non-compliant. All active substitute parts listed (ABC-4-R, BK/ABC-4-R, BK/GBB-4-R, GBB-4-R, and Littelfuse 0314004 series) are ROHS3 compliant. This compliance improvement is a secondary benefit when transitioning from the obsolete part.

Q: Which substitute has the best approval certifications?

A: The Littelfuse 0314004 series (0314004.HXP, 0314004.MXP, 0314004.VXP) carry the most comprehensive approvals: CE, CSA, K-MARK, PSE, and UL. The Eaton parts (ABC-4-R, BK/ABC-4-R, GBB-4-R) carry CSA and UL certifications. BK/GBB-4-R carries CSA and UR certifications. All substitutes meet or exceed the original BK/ABC-4 approval requirements (CSA, UL).