Equivalent & Substitute Parts for BK/ABC-7 Ceramic Fuse

Part Overview

The BK/ABC-7 is a 7 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation, designed for use with 3AB, 3AG holder configurations. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts that maintain electrical and mechanical compatibility. Substitute parts must satisfy identical current ratings, voltage specifications, physical dimensions, and holder requirements to ensure direct functional replacement in circuit protection applications.

Substiute Parts

BK/ABC-7

Eaton - Electronics DivisionIn Stock: 994BK/ABC-7 Datasheet

Current PartRFQ

ABC-7-R

Eaton - Electronics DivisionIn Stock: 820ABC-7-R Datasheet

DirectRFQ

BK/ABC-7-R

Eaton - Electronics DivisionIn Stock: 1331BK/ABC-7-R Datasheet

DirectRFQ

BK/GBB-7-R

Eaton - Electronics DivisionIn Stock: 839BK/GBB-7-R Datasheet

Parametric EquivalentRFQ

GBB-7-R

Eaton - Electronics DivisionIn Stock: 773GBB-7-R Datasheet

Parametric EquivalentRFQ

0314007.HXP

Littelfuse Inc.In Stock: 11090314007.HXP Datasheet

Parametric EquivalentRFQ

0314007.MXP

Littelfuse Inc.In Stock: 20310314007.MXP Datasheet

Parametric EquivalentRFQ

0314007.VXP

Littelfuse Inc.In Stock: 9540314007.VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

Mandatory Equivalence Criteria:

• Current Rating: 7 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)
• Physical Dimensions: 0.250" Dia x 1.250" L / 6.35mm x 31.75mm (exact match required)
• Holder Compatibility: 3AB, 3AG (exact match required)

All substitute parts listed below satisfy these mandatory criteria. Variations in secondary parameters such as breaking capacity, melting I²t, DC cold resistance, and RoHS compliance status do not affect functional substitutability within the specified electrical and mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: BK/ABC-7-R

BK/ABC-7-R is the direct active equivalent manufactured by Eaton - Electronics Division. This part maintains the same series designation (ABC) and provides identical electrical and mechanical specifications to the obsolete BK/ABC-7. BK/ABC-7-R carries ROHS3 compliance and is actively produced, with 1221 units in stock.

Secondary Recommendations: ABC-7-R and GBB-7-R (Eaton)

ABC-7-R and GBB-7-R are active Eaton alternatives that satisfy all mandatory substitution criteria. Both parts are ROHS3 compliant. GBB-7-R represents a different series within the Eaton product line but maintains full electrical and mechanical compatibility. Selection between ABC-7-R and GBB-7-R depends on design documentation requirements and internal part numbering systems.

Alternative Manufacturer: Littelfuse 0314007 Series

The Littelfuse 0314007.HXP, 0314007.MXP, and 0314007.VXP fuses provide parametric equivalence with identical current, voltage, and physical specifications. These parts feature higher breaking capacity (750 A AC versus 200 A AC) and extended operating temperature range (-55°C to 125°C). Littelfuse parts carry broader approval agency certifications (CE, CSA, K-MARK, PSE, UL) and are ROHS3 compliant. Selection of Littelfuse alternatives is appropriate when design specifications permit cross-manufacturer substitution or when Eaton parts are unavailable.

Frequently Asked Questions (FAQ)

Q: Can BK/ABC-7 be directly replaced with ABC-7-R or BK/ABC-7-R?

A: Yes. ABC-7-R and BK/ABC-7-R are direct active equivalents. Both parts satisfy identical electrical ratings (7 A, 250 V AC, 125 V DC), response time (Fast Blow), physical dimensions (0.250" Dia x 1.250" L), and holder requirements (3AB, 3AG). The primary difference is product status: BK/ABC-7 is obsolete while ABC-7-R and BK/ABC-7-R are active production parts.

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

A: Both ABC and GBB series fuses from Eaton meet the mandatory substitution criteria for this application. The series designation reflects internal product line organization. GBB-7-R and BK/GBB-7-R are functionally equivalent to ABC-7-R and BK/ABC-7-R for the specified 7 A, 250 V AC, 125 V DC application. Selection between series depends on design documentation and procurement requirements.

Q: Can Littelfuse 0314007 series fuses replace Eaton fuses?

A: Yes. Littelfuse 0314007.HXP, 0314007.MXP, and 0314007.VXP satisfy all mandatory electrical and mechanical substitution criteria. These parts are parametric equivalents with identical current ratings, voltage ratings, response time, and physical dimensions. Littelfuse parts feature higher breaking capacity and broader temperature operating range. Cross-manufacturer substitution is permissible when design specifications allow.

Q: Are there differences in breaking capacity between substitute parts?

A: Yes. Breaking capacity varies among substitutes: Eaton ABC and GBB series specify 200 A AC (with one exception: BK/GBB-7-R specifies 10 kA AC only), while Littelfuse 0314007 series specifies 750 A AC. All parts maintain 10 kA DC breaking capacity. Breaking capacity does not affect substitutability for applications within the specified 7 A current rating. Verify application requirements if breaking capacity is a design constraint.

Q: What is the significance of RoHS compliance status?

A: The obsolete BK/ABC-7 is RoHS non-compliant. All active substitute parts (ABC-7-R, BK/ABC-7-R, GBB-7-R, BK/GBB-7-R, and Littelfuse 0314007 series) are ROHS3 compliant. RoHS3 compliance is required for products sold into regulated markets. Selection of ROHS3-compliant substitutes ensures regulatory compliance for new designs and end-of-life replacements.

Q: Do all substitute parts fit the same 3AB and 3AG holders?

A: Yes. All substitute parts maintain identical physical dimensions (0.250" Dia x 1.250" L / 6.35mm x 31.75mm) and are specified for 3AB and 3AG holder compatibility. No mechanical modification or holder replacement is required when substituting between listed parts.

Q: What is the difference between 0314007.HXP, 0314007.MXP, and 0314007.VXP?

A: All three Littelfuse part numbers satisfy identical electrical and mechanical specifications for this application. The suffix designations (.HXP, .MXP, .VXP) reflect internal Littelfuse product variants. For the 7 A, 250 V AC, 125 V DC ceramic cartridge fuse application, these parts are functionally equivalent. Selection among variants depends on availability and procurement requirements.