Equivalent & Substitute Parts for ABC-1/4-R Ceramic Cartridge Fuse

Part Overview

The ABC-1/4-R is a ceramic cartridge fuse manufactured by Eaton - Electronics Division, rated for 250 mA at 250 V AC and 125 V DC. This fast-blow fuse is designed for applications requiring circuit protection in equipment operating across AC and DC voltage domains. The part is currently active in production with 1003 pieces available in inventory. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when inventory constraints require component flexibility within the same electrical and mechanical specifications.

Substiute Parts

ABC-1/4-R

Eaton - Electronics DivisionIn Stock: 1043ABC-1/4-R Datasheet

Current PartRFQ

BK/ABC-1/4-R

Eaton - Electronics DivisionIn Stock: 1500BK/ABC-1/4-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ABC-1/4-R is determined by strict equivalence across the following critical parameters:

• Current Rating: 250 mA (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)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Breaking Capacity @ Rated Voltage: 35A AC, 10kA DC (exact match required)
• Size / Dimension: 0.250" Dia x 1.250" L (6.35mm x 31.75mm) (exact match required)
• DC Cold Resistance: 2.95 Ohms (exact match required)
• Melting I²t: 0.002 (exact match required)
• Approval Agency: CSA, UL (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

The substitute part BK/ABC-1/4-R meets all specified electrical and mechanical parameters and is therefore classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both ABC-1/4-R and BK/ABC-1/4-R are active production parts manufactured by Eaton - Electronics Division with identical electrical specifications, mechanical dimensions, and regulatory certifications. Selection between these parts should be based on inventory availability and procurement lead times. Both parts carry CSA and UL approvals and are ROHS3 compliant, confirming suitability for regulated applications. The BK/ABC-1/4-R variant currently has higher inventory availability at 1455 pieces compared to 1003 pieces for the ABC-1/4-R, which may influence procurement decisions for high-volume requirements.

Frequently Asked Questions (FAQ)

Q: Can BK/ABC-1/4-R be used as a direct replacement for ABC-1/4-R in existing designs?

A: Yes. The BK/ABC-1/4-R is electrically and mechanically equivalent to the ABC-1/4-R across all specified parameters, including current rating, voltage ratings, fuse type, response time, package dimensions, breaking capacity, and resistance characteristics. No design modifications are required.

Q: Are there any differences in regulatory compliance between these two part numbers?

A: No. Both parts carry identical CSA and UL approvals and are ROHS3 compliant. Regulatory compliance is equivalent.

Q: What is the significance of the "BK/" prefix in the substitute part number?

A: The BK/ prefix indicates a variant designation from Eaton - Electronics Division. This designation does not affect electrical or mechanical performance; it represents an alternative part number for the same functional component.

Q: Do these fuses require a specific holder for installation?

A: Yes. Both ABC-1/4-R and BK/ABC-1/4-R require a compatible holder designed for 3AB, 3AG, 1/4" x 1-1/4" cartridge fuses. The fuse dimensions are 0.250" diameter by 1.250" length (6.35mm x 31.75mm).

Q: What is the melting I²t value and why is it important?

A: The melting I²t value of 0.002 represents the thermal energy required to melt the fuse element. This parameter is critical for coordinating fuse protection with circuit design and ensuring proper operation under fault conditions. Both parts have identical I²t values.

Q: Are these fuses suitable for both AC and DC applications?

A: Yes. Both parts are rated for 250 V AC and 125 V DC operation, making them suitable for dual-voltage applications. The breaking capacity is 35A AC and 10kA DC at rated voltage.