Equivalent & Substitute Parts for BK1/ABC-7-R Ceramic Cartridge Fuse

Part Overview

The BK1/ABC-7-R is a 7 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 alternatives for continued system support and procurement. The fuse operates with fast-blow response characteristics and requires a compatible holder (3AB, 3AG format). Substitute parts must maintain identical electrical ratings, mechanical dimensions, and approval certifications to ensure direct functional replacement without circuit redesign.

Substiute Parts

BK1/ABC-7-R

Eaton - Electronics DivisionIn Stock: 1001BK1/ABC-7-R Datasheet

Current PartRFQ

ABC-7-R

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

Parametric EquivalentRFQ

BK/ABC-7-R

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

Parametric EquivalentRFQ

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 mandatory parameters:

Electrical 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)
• Response Time: Fast Blow (exact match required)

Mechanical Equivalence Criteria:

• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (6.35mm x 31.75mm) (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Mounting Type: Requires Holder (exact match required)

Compliance Criteria:

• RoHS Status: ROHS3 Compliant (required)
• Approval Agencies: Must include CSA and UL certifications (minimum requirement)

All substitute parts listed below satisfy these criteria. Variations in breaking capacity, DC cold resistance, melting I²t, and operating temperature ranges do not disqualify substitution when all primary parameters match.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Eaton Active Series:

The ABC-7-R, BK/ABC-7-R, and GBB-7-R variants from Eaton maintain full electrical and mechanical equivalence to the obsolete BK1/ABC-7-R. All three are active products with current manufacturing status. Selection between these Eaton options depends on packaging requirements and inventory availability:

• ABC-7-R: Active status, 780 units in stock, identical electrical specifications
• BK/ABC-7-R: Active status, highest inventory (1221 units), identical specifications
• GBB-7-R: Active status, 722 units in stock, GBB series designation

All Eaton substitutes carry CSA and UL approvals and ROHS3 compliance.

Secondary Recommendation - Littelfuse 314 Series:

The 0314007.HXP, 0314007.MXP, and 0314007.VXP fuses from Littelfuse provide full parametric equivalence with enhanced breaking capacity (750A AC versus 200A AC for Eaton). These components are active products with expanded approval certifications (CE, CSA, K-MARK, PSE, UL) and operating temperature range (-55°C to 125°C). Selection among Littelfuse variants depends on inventory requirements:

• 0314007.MXP: Highest inventory availability (1954 units)
• 0314007.HXP: 1035 units in stock
• 0314007.VXP: 896 units in stock

Littelfuse substitutes are suitable for applications requiring broader geographic compliance or extended temperature operation.

Compliance Basis:

All recommended substitutes maintain ROHS3 compliance and carry minimum CSA and UL certifications required for direct replacement. Littelfuse variants provide additional certifications (CE, K-MARK, PSE) for expanded market applicability.

Frequently Asked Questions (FAQ)

Q: Can BK/ABC-7-R directly replace BK1/ABC-7-R without circuit modification?

A: Yes. BK/ABC-7-R is a direct parametric equivalent with identical current rating (7 A), voltage ratings (250 V AC, 125 V DC), response time (fast blow), and mechanical package (3AB, 3AG, 1/4" x 1-1/4"). Both require the same holder type and carry CSA and UL approvals.

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

A: Both ABC and GBB series maintain identical electrical ratings (7 A, 250 V AC, 125 V DC, fast blow) and mechanical dimensions. The primary difference is series designation; both are active Eaton products suitable for direct substitution. DC cold resistance varies slightly (0.016 Ω for ABC versus 0.0155 Ω for GBB), which does not affect substitution eligibility.

Q: Are Littelfuse 314 series fuses compatible with existing Eaton fuse holders?

A: Yes. Littelfuse 0314007.HXP, 0314007.MXP, and 0314007.VXP fuses share identical mechanical package specifications (3AB, 3AG, 1/4" x 1-1/4") and are designed for the same holder types as Eaton equivalents. Mechanical compatibility is confirmed.

Q: Why do Littelfuse fuses have higher breaking capacity (750A AC) than Eaton (200A AC)?

A: Breaking capacity is a performance characteristic that does not affect substitution eligibility when all primary electrical and mechanical parameters match. Higher breaking capacity indicates enhanced fault protection capability and does not create incompatibility. Littelfuse fuses remain direct substitutes.

Q: Which substitute offers the best inventory availability?

A: Littelfuse 0314007.MXP provides the highest inventory level at 1954 units. Among Eaton options, BK/ABC-7-R offers the highest availability at 1221 units.

Q: Do all substitutes carry the same approval certifications?

A: All substitutes carry minimum CSA and UL certifications. Littelfuse variants include additional certifications: CE, K-MARK, and PSE. These additional certifications expand geographic compliance without affecting core substitution compatibility.

Q: What is the operating temperature range for each substitute?

A: Eaton ABC and GBB series do not specify operating temperature ranges in provided data. Littelfuse 314 series fuses operate across -55°C to 125°C. For applications requiring extended temperature operation, Littelfuse variants are specified.

Q: Can I mix Eaton and Littelfuse fuses in the same circuit?

A: Yes. All listed substitutes meet identical electrical and mechanical requirements. Mixed use within a single circuit is permissible from a compatibility standpoint, though standard practice typically maintains single-manufacturer consistency within a system.