Equivalent & Substitute Parts for BK/ABC-1-1/2 Ceramic Cartridge Fuse

Part Overview

The BK/ABC-1-1/2 is a 1.5 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation, manufactured by Eaton - Electronics Division. This fuse is designed for fast-blow response and requires a compatible holder (3AB, 3AG format). The main part number is currently listed as obsolete product status. Identifying equivalent and substitute parts is necessary to maintain circuit protection functionality in applications where the original part is no longer readily available or where active product variants are preferred for new designs and ongoing inventory management.

Substiute Parts

BK/ABC-1-1/2

Eaton - Electronics DivisionIn Stock: 800BK/ABC-1-1/2 Datasheet

Current PartRFQ

ABC-1-1/2-R

Eaton - Electronics DivisionIn Stock: 880ABC-1-1/2-R Datasheet

DirectRFQ

BK/ABC-1-1/2-R

Eaton - Electronics DivisionIn Stock: 915BK/ABC-1-1/2-R Datasheet

DirectRFQ

0034.1001

SCHURTER Inc.In Stock: 12140034.1001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the BK/ABC-1-1/2 is based on strict electrical and mechanical parameter matching:

Direct Substitutes (Identical Electrical and Mechanical Parameters):

• ABC-1-1/2-R and BK/ABC-1-1/2-R are direct substitutes manufactured by Eaton - Electronics Division
• Both maintain identical current rating (1.5 A), voltage ratings (250 V AC / 125 V DC), fuse type (Cartridge, Ceramic), package format (3AB, 3AG, 1/4" x 1-1/4"), and response time (Fast Blow)
• Both hold CSA and UL approval certifications
• Both feature identical breaking capacity (100A AC, 10kA DC)
• Key difference: ABC-1-1/2-R and BK/ABC-1-1/2-R are active product status with RoHS3 compliance, whereas BK/ABC-1-1/2 is obsolete

Similar Substitute (Parameter Variance):

• 0034.1001 manufactured by SCHURTER Inc. is classified as a similar substitute with the following parameter deviations:
  • Current rating: 1.6 A (versus 1.5 A) — represents 6.7% increase
  • Fuse type: Glass cartridge (versus ceramic cartridge) — different material composition
  • Voltage rating - DC: Not specified in provided data (versus 125 V DC)
  • Breaking capacity: 1.5 kA (versus 100A AC, 10kA DC) — significantly lower fault current handling
  • Product status: Obsolete
  • Melting I²t: 0.5 (versus 2.9 for BK/ABC-1-1/2 or 1.163 for ABC-1-1/2-R)

The 0034.1001 maintains mechanical compatibility (3AB, 3AG, 1/4" x 1-1/4" package) and AC voltage rating (250 V), but electrical characteristics differ sufficiently to classify it as a similar rather than direct substitute.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred):

ABC-1-1/2-R and BK/ABC-1-1/2-R are the recommended substitutes for BK/ABC-1-1/2. Both parts are manufactured by Eaton - Electronics Division and maintain active product status. These direct substitutes provide:

• Identical electrical ratings and mechanical dimensions
• Full compatibility with existing 3AB/3AG holders
• CSA and UL regulatory certifications matching the original part
• ROHS3 compliance, addressing environmental and regulatory requirements absent in the obsolete original part
• Equivalent breaking capacity and fast-blow response characteristics

Between ABC-1-1/2-R and BK/ABC-1-1/2-R, both are functionally equivalent. Selection may be based on packaging preference (Bulk) and current inventory availability.

For Similar Substitution (Limited Applicability):

0034.1001 (SCHURTER Inc.) is a similar substitute suitable only in applications where the 1.6 A current rating and glass cartridge construction are acceptable. This part is not recommended as a direct replacement due to:

• Current rating variance (1.6 A versus 1.5 A)
• Material composition difference (glass versus ceramic)
• Significantly reduced breaking capacity (1.5 kA versus 10 kA DC)
• Obsolete product status
• Absence of specified DC voltage rating and regulatory certifications

Frequently Asked Questions (FAQ)

Q: Can ABC-1-1/2-R be used as a direct replacement for BK/ABC-1-1/2?

A: Yes. ABC-1-1/2-R is a direct substitute. Both parts share identical current rating (1.5 A), voltage ratings (250 V AC / 125 V DC), fuse type (Cartridge, Ceramic), package format (3AB, 3AG, 1/4" x 1-1/4"), and breaking capacity (100A AC, 10kA DC). The primary advantage of ABC-1-1/2-R is active product status and ROHS3 compliance.

Q: What is the difference between ABC-1-1/2-R and BK/ABC-1-1/2-R?

A: Both are direct substitutes manufactured by Eaton - Electronics Division with identical electrical and mechanical specifications. The difference is in part numbering convention. Both are active products with ROHS3 compliance and equivalent performance characteristics.

Q: Why is 0034.1001 listed as a similar rather than direct substitute?

A: The 0034.1001 differs in three key parameters: current rating (1.6 A versus 1.5 A), fuse material (glass versus ceramic), and breaking capacity (1.5 kA versus 10 kA DC). While it maintains mechanical compatibility and AC voltage rating, these electrical differences prevent it from being classified as a direct substitute.

Q: Will 0034.1001 work in my application if I currently use BK/ABC-1-1/2?

A: Compatibility depends on application-specific requirements. The 1.6 A current rating is 6.7% higher than the original 1.5 A specification. The significantly lower breaking capacity (1.5 kA) may be insufficient for high-fault-current environments. Verify that your circuit design and fault current levels accommodate these parameter differences before substitution.

Q: Are all substitute parts compatible with existing 3AB/3AG holders?

A: Yes. All listed substitutes maintain the 3AB, 3AG, 1/4" x 1-1/4" package format and are mechanically compatible with holders designed for this standard cartridge fuse size.

Q: What is the significance of RoHS3 compliance in the substitute parts?

A: RoHS3 compliance indicates conformance to Restriction of Hazardous Substances regulations. The original BK/ABC-1-1/2 is RoHS non-compliant, while ABC-1-1/2-R and BK/ABC-1-1/2-R are ROHS3 compliant. For new designs and applications subject to environmental regulations, the compliant substitutes are preferred.

Q: Can I use BK/ABC-1-1/2-R in a 125 V DC circuit?

A: Yes. BK/ABC-1-1/2-R is rated for 125 V DC operation, identical to the original BK/ABC-1-1/2. Both parts are suitable for DC applications within this voltage specification.