BK/ABC-8 Ceramic Cartridge Fuse 8A 250VAC 125VDC Equivalent & Substitute Parts

Part Overview

The BK/ABC-8 is an 8 ampere ceramic cartridge fuse rated for 250V AC and 125V DC operation, manufactured by Eaton Electronics Division. This component is classified as obsolete, requiring identification of active equivalent alternatives for continued system support and procurement. The fuse operates with fast-blow response characteristics and requires a compatible holder (3AB, 3AG format, 1/4" x 1-1/4" dimensions). Substitution is necessary due to the obsolete product status, which limits long-term availability and supply chain reliability.

Substiute Parts

BK/ABC-8

Eaton - Electronics DivisionIn Stock: 1140BK/ABC-8 Datasheet

Current PartRFQ

ABC-8-R

Eaton - Electronics DivisionIn Stock: 1230ABC-8-R Datasheet

DirectRFQ

BK/ABC-8-R

Eaton - Electronics DivisionIn Stock: 1649BK/ABC-8-R Datasheet

DirectRFQ

BK/GBB-8-R

Eaton - Electronics DivisionIn Stock: 3821BK/GBB-8-R Datasheet

Parametric EquivalentRFQ

GBB-8-R

Eaton - Electronics DivisionIn Stock: 927GBB-8-R Datasheet

Parametric EquivalentRFQ

0314008.HXP

Littelfuse Inc.In Stock: 20640314008.HXP Datasheet

Parametric EquivalentRFQ

0314008.MXP

Littelfuse Inc.In Stock: 12440314008.MXP Datasheet

Parametric EquivalentRFQ

0314008.VXP

Littelfuse Inc.In Stock: 9470314008.VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: current rating (8A), AC voltage rating (250V), DC voltage rating (125V), fuse type (ceramic cartridge), response time (fast blow), physical package format (3AB/3AG, 1/4" x 1-1/4"), and mounting requirement (holder-based installation).

All identified substitute parts maintain these core electrical and mechanical specifications. Substitute parts are grouped into two categories:

Direct Manufacturer Substitutes (Eaton Electronics Division): ABC-8-R, BK/ABC-8-R, GBB-8-R, and BK/GBB-8-R maintain identical electrical ratings and physical dimensions. These parts differ primarily in product status (active versus obsolete) and RoHS compliance level.

Parametric Equivalents (Littelfuse Inc.): 0314008.HXP, 0314008.MXP, and 0314008.VXP provide functional equivalence across all critical electrical and mechanical parameters while originating from an alternative manufacturer. These parts are certified to equivalent international standards and maintain the same form factor and holder compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Eaton Direct Substitutes:

ABC-8-R and BK/ABC-8-R are the preferred substitutes for BK/ABC-8 applications. Both parts are manufactured by Eaton Electronics Division, maintaining design continuity and supply chain consistency. These substitutes are active products with ROHS3 compliance, addressing regulatory requirements while preserving electrical and mechanical compatibility. BK/ABC-8-R offers the highest inventory availability (1634 units) among Eaton alternatives.

Secondary Recommendation - Eaton Series Alternatives:

GBB-8-R and BK/GBB-8-R represent alternative series within the Eaton product line, maintaining identical electrical specifications and physical form factor. These parts are suitable for applications where series designation is not a critical constraint. BK/GBB-8-R provides the largest inventory pool (3767 units) among all Eaton options.

Cross-Manufacturer Alternative - Littelfuse Parametric Equivalents:

The Littelfuse 314 series fuses (0314008.HXP, 0314008.MXP, 0314008.VXP) provide functional equivalence across all critical electrical and mechanical parameters. These parts are certified to equivalent international standards (CE, CSA, K-MARK, PSE, UL) and operate across an extended temperature range (-55°C to 125°C). Selection among Littelfuse variants should be based on specific application requirements and inventory availability. 0314008.HXP offers the highest inventory level (2000 units) within the Littelfuse group.

Compliance Considerations:

All substitute parts are ROHS3 compliant, addressing modern regulatory requirements. The BK/ABC-8 original part is RoHS non-compliant, making substitution necessary for applications subject to RoHS directives. Littelfuse parts carry expanded international certifications (CE, K-MARK, PSE, KC) in addition to CSA and UL, providing broader geographic compliance coverage.

Frequently Asked Questions (FAQ)

Q: Can ABC-8-R directly replace BK/ABC-8 in existing applications?

A: Yes. ABC-8-R maintains identical electrical ratings (8A, 250V AC, 125V DC), response time (fast blow), and physical dimensions (0.250" Dia x 1.250" L). Both parts require the same holder format (3AB, 3AG). The primary difference is product status: ABC-8-R is active while BK/ABC-8 is obsolete.

Q: What is the difference between ABC-8-R and BK/ABC-8-R?

A: Both parts are manufactured by Eaton and maintain identical electrical and mechanical specifications. The "BK/" prefix designation indicates a variant within the product line. BK/ABC-8-R has higher inventory availability (1634 units versus 1142 units for ABC-8-R). Selection between these two can be based on procurement lead time and inventory requirements.

Q: Are Littelfuse 0314008 series fuses compatible with existing Eaton fuse holders?

A: Yes. The Littelfuse 314 series fuses (0314008.HXP, 0314008.MXP, 0314008.VXP) maintain the identical 3AB/3AG package format and physical dimensions (0.250" Dia x 1.250" L). These parts are mechanically and electrically compatible with holders designed for the BK/ABC-8 fuse.

Q: What is the significance of the breaking capacity difference between BK/GBB-8-R (10kA DC only) and other substitutes (200A AC, 10kA DC)?

A: Breaking capacity indicates the maximum fault current the fuse can safely interrupt. BK/GBB-8-R specifies 10kA DC breaking capacity without an AC rating, while other substitutes specify both 200A AC and 10kA DC. For applications requiring AC fault protection, select substitutes with explicit AC breaking capacity ratings (ABC-8-R, BK/ABC-8-R, GBB-8-R, or Littelfuse variants).

Q: Why do Littelfuse fuses have higher breaking capacity ratings (750A AC) compared to Eaton alternatives (200A AC)?

A: Breaking capacity is a design characteristic determined by fuse construction and materials. Littelfuse 314 series fuses are engineered with higher breaking capacity specifications. Both ratings exceed typical circuit protection requirements. Selection should be based on specific application fault current levels and system design specifications.

Q: Are there temperature operating range differences between substitutes?

A: Yes. The BK/ABC-8 and Eaton substitutes do not specify an operating temperature range. Littelfuse 0314008 series fuses specify -55°C to 125°C operating range. For applications requiring extended temperature operation, Littelfuse variants provide documented performance across this range.

Q: What does ROHS3 compliance mean for fuse selection?

A: ROHS3 compliance indicates the fuse meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All substitute parts are ROHS3 compliant, while the original BK/ABC-8 is non-compliant. For applications subject to RoHS regulations or customer requirements, substitutes are necessary.

Q: Can I use GBB-8-R or BK/GBB-8-R as substitutes if the original specification calls for ABC series?

A: Yes, from an electrical and mechanical standpoint. Both ABC and GBB series maintain identical electrical ratings and physical form factors. However, if the original design specification explicitly requires ABC series designation, engineering review may be necessary to confirm series substitution is acceptable for your application.

Q: Which substitute offers the best inventory availability?

A: BK/GBB-8-R offers the highest inventory level at 3767 units. Among Littelfuse alternatives, 0314008.HXP provides 2000 units. For immediate procurement needs, BK/GBB-8-R represents the most readily available option.