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

Part Overview

The ABC-2-1/2-R is a 2.5 A ceramic cartridge fuse manufactured by Eaton - Electronics Division, rated for 250 V AC and 125 V DC operation. This fast-blow fuse is designed for use in 3AB and 3AG holder configurations with dimensions of 1/4" x 1-1/4" (6.35mm x 31.75mm). The part maintains active product status and is ROHS3 compliant. Substitute parts are identified to provide alternative sourcing options while maintaining identical electrical and mechanical specifications.

Substiute Parts

ABC-2-1/2-R

Eaton - Electronics DivisionIn Stock: 1040ABC-2-1/2-R Datasheet

Current PartRFQ

BK/ABC-2-1/2-R

Eaton - Electronics DivisionIn Stock: 1122BK/ABC-2-1/2-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ABC-2-1/2-R are identified based on strict equivalence across all critical electrical and mechanical parameters. The substitution criteria are:

Electrical Parameters:

• Current Rating: 2.5 A
• Voltage Rating - AC: 250 V
• Voltage Rating - DC: 125 V
• Response Time: Fast Blow
• Breaking Capacity @ Rated Voltage: 100A AC, 10kA DC
• Melting I²t: 4.467
• DC Cold Resistance: 0.061 Ohms

Mechanical Parameters:

• Fuse Type: Cartridge, Ceramic
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4"
• Size / Dimension: 0.250" Dia x 1.250" L (6.35mm x 31.75mm)

Compliance Parameters:

• Approval Agency: CSA, UL
• RoHS Status: ROHS3 Compliant

All substitute parts must match these parameters exactly to ensure direct interchangeability in circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

The BK/ABC-2-1/2-R is a direct equivalent substitute for the ABC-2-1/2-R. Both parts are manufactured by Eaton - Electronics Division and maintain identical electrical specifications, mechanical dimensions, and regulatory compliance certifications (CSA, UL). Both parts are ROHS3 compliant and carry active product status.

Selection between ABC-2-1/2-R and BK/ABC-2-1/2-R is based on availability and inventory considerations. Both parts are suitable for direct replacement in any circuit application requiring a 2.5 A, 250 V AC / 125 V DC ceramic cartridge fuse with fast-blow response characteristics and 3AB/3AG holder compatibility.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts are electrically and mechanically identical. They share the same current rating (2.5 A), voltage ratings (250 V AC, 125 V DC), response time (fast blow), breaking capacity, melting I²t value, and physical dimensions (0.250" Dia x 1.250" L). Both are compatible with 3AB and 3AG fuse holders.

Q: Are there any compliance differences between these parts?

A: No. Both parts carry identical approval certifications (CSA, UL) and are ROHS3 compliant. Both maintain active product status.

Q: What holder types are compatible with these fuses?

A: Both ABC-2-1/2-R and BK/ABC-2-1/2-R are designed for use with 3AB and 3AG fuse holders. The physical dimensions of 1/4" diameter by 1-1/4" length (6.35mm x 31.75mm) are standard for these holder configurations.

Q: What is the breaking capacity of these fuses?

A: Both parts have a breaking capacity of 100A AC and 10kA DC at rated voltage.

Q: Are these fuses suitable for DC applications?

A: Yes. Both parts are rated for 125 V DC operation and have a DC cold resistance of 0.061 Ohms, making them suitable for DC circuit protection applications.