Equivalent & Substitute Parts for BK/ABC-2 Ceramic Fuse

Part Overview

The BK/ABC-2 is a 2 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation, designed for use with 3AB, 3AG holders in a 1/4" x 1-1/4" form factor. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for continued system support and procurement. The fuse exhibits fast-blow response characteristics with a breaking capacity of 100 A AC and 10 kA DC, suitable for general-purpose circuit protection applications.

Substiute Parts

BK/ABC-2

Eaton - Electronics DivisionIn Stock: 871BK/ABC-2 Datasheet

Current PartRFQ

ABC-2-R

Eaton - Electronics DivisionIn Stock: 666ABC-2-R Datasheet

DirectRFQ

BK/ABC-2-R

Eaton - Electronics DivisionIn Stock: 1686BK/ABC-2-R Datasheet

DirectRFQ

BK/GBB-2-R

Eaton - Electronics DivisionIn Stock: 1734BK/GBB-2-R Datasheet

Parametric EquivalentRFQ

GBB-2-R

Eaton - Electronics DivisionIn Stock: 1196GBB-2-R Datasheet

Parametric EquivalentRFQ

0314002.HXP

Littelfuse Inc.In Stock: 19130314002.HXP Datasheet

Parametric EquivalentRFQ

0314002.MXP

Littelfuse Inc.In Stock: 16300314002.MXP Datasheet

Parametric EquivalentRFQ

0314002.VXP

Littelfuse Inc.In Stock: 9750314002.VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/ABC-2 is determined by strict equivalence across the following parameters: current rating (2 A), AC voltage rating (250 V), DC voltage rating (125 V), fuse type (cartridge ceramic), response time (fast blow), and physical package dimensions (0.250" Dia x 1.250" L). All identified substitute parts maintain these core electrical and mechanical specifications, ensuring direct functional compatibility within existing holder assemblies.

Substitute parts are grouped into two categories:

Direct Manufacturer Equivalents (Eaton - Electronics Division): ABC-2-R, BK/ABC-2-R, BK/GBB-2-R, and GBB-2-R represent active alternatives from the original manufacturer, with improved RoHS3 compliance and enhanced product status compared to the obsolete BK/ABC-2.

Parametric Equivalents (Littelfuse Inc.): The 0314002.HXP, 0314002.MXP, and 0314002.VXP series provide cross-manufacturer alternatives meeting identical electrical specifications and mechanical form factors, with extended operating temperature range and additional regulatory approvals.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: BK/ABC-2-R or ABC-2-R (Eaton - Electronics Division)

These parts provide direct manufacturer continuity with the obsolete BK/ABC-2, maintaining identical electrical specifications and mechanical compatibility. Both are active products with ROHS3 compliance and CSA/UL approvals. BK/ABC-2-R offers the highest inventory availability (1595 units) and includes REACH Unaffected status documentation.

Secondary Recommendation: GBB-2-R (Eaton - Electronics Division)

This alternative from the same manufacturer provides enhanced breaking capacity (200 A AC versus 100 A AC) while maintaining all core electrical parameters. Active product status with ROHS3 compliance and CSA/UR approvals. Suitable for applications requiring higher fault current withstand capability.

Cross-Manufacturer Alternative: 0314002.HXP, 0314002.MXP, or 0314002.VXP (Littelfuse Inc.)

These Littelfuse 314 series fuses provide parametric equivalence with extended operating temperature range (-55°C to 125°C) and broader regulatory approvals (CE, CSA, PSE, UL). All three variants maintain identical electrical specifications and mechanical form factors. Selection among these three variants depends on specific application requirements and supply chain preferences.

Frequently Asked Questions (FAQ)

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

A: Yes. BK/ABC-2-R maintains identical current rating (2 A), voltage ratings (250 V AC / 125 V DC), response time (fast blow), and physical dimensions (0.250" Dia x 1.250" L). Both are compatible with 3AB and 3AG holders. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant).

Q: What is the difference between the Eaton ABC series and GBB series substitutes?

A: Both series maintain identical electrical specifications for the 2 A, 250 V AC / 125 V DC rating. The GBB series offers higher breaking capacity (200 A AC for GBB-2-R versus 100 A AC for ABC-2-R), lower DC cold resistance (0.0662 Ω versus 0.089 Ω), and CSA/UR approvals versus CSA/UL. Selection depends on circuit protection requirements and regulatory jurisdiction.

Q: Are Littelfuse 0314002 series fuses compatible with existing Eaton fuse holders?

A: Yes. The 0314002.HXP, 0314002.MXP, and 0314002.VXP fuses maintain the identical 3AB/3AG package specification and 0.250" Dia x 1.250" L physical dimensions, ensuring mechanical compatibility with existing 3AB and 3AG holder assemblies.

Q: What is the significance of the melting I²t parameter differences?

A: Melting I²t values (ranging from 2.167 to 11 across the substitute parts) represent thermal energy absorption characteristics. All substitute parts maintain the same fast-blow response classification and are functionally equivalent for circuit protection purposes. Differences reflect manufacturing variations between series and manufacturers.

Q: Which substitute part offers the broadest regulatory approval coverage?

A: The Littelfuse 0314002 series (HXP, MXP, VXP variants) carries the most comprehensive approvals: CE, CSA, PSE, and UL. This makes these parts suitable for applications requiring multi-regional compliance documentation.

Q: Is there an inventory advantage to selecting one substitute over another?

A: BK/ABC-2-R offers the highest current inventory (1595 units), followed by BK/GBB-2-R (1721 units) and 0314002.HXP (1872 units). All substitute parts are in active production with substantial stock levels.