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

Part Overview

The ABC-1-1/4 is a ceramic fuse rated at 1.25A, 250VAC, manufactured by Eaton - Electronics Division. This component is classified as obsolete and does not comply with RoHS standards. Due to its obsolete status, equivalent substitute parts are necessary for ongoing maintenance, repair, and new design implementations where this fuse specification is required.

Substiute Parts

ABC-1-1/4

Eaton - Electronics DivisionIn Stock: 1146ABC-1-1/4 Datasheet

Current PartRFQ

ABC-1-1/4-R

Eaton - Electronics DivisionIn Stock: 814ABC-1-1/4-R Datasheet

DirectRFQ

0001.1025

SCHURTER Inc.In Stock: 12820001.1025 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ABC-1-1/4 is determined by strict equivalence in the following parameters:

• Current Rating: 1.25 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Requires Holder (exact match required)

Substitute parts may differ in fuse material composition (ceramic versus glass) and manufacturer, provided all electrical and mechanical parameters remain equivalent. Compliance status and product availability are secondary considerations for substitution validity.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: ABC-1-1/4-R (Eaton - Electronics Division)

The ABC-1-1/4-R is the direct equivalent from the original manufacturer. It maintains identical electrical specifications (1.25A, 250VAC) and mechanical compatibility (3AB, 3AG, 1/4" x 1-1/4" package). The ABC-1-1/4-R holds active product status and achieves ROHS3 compliance, addressing the obsolescence and compliance limitations of the original ABC-1-1/4. This part carries CSA and UL approvals, supporting use in regulated applications.

Secondary Substitute: 0001.1025 (SCHURTER Inc.)

The 0001.1025 meets all critical electrical and mechanical parameters (1.25A, 250VAC, Fast Blow, 3AB/3AG package). The primary distinction is material composition: this part is a glass cartridge fuse rather than ceramic. Both materials are functionally equivalent for the specified electrical ratings and response characteristics. The 0001.1025 achieves ROHS3 compliance and provides documented operating temperature range (-40°C ~ 85°C) and breaking capacity (1.5kA). However, this part is also classified as obsolete.

For new designs and long-term availability, ABC-1-1/4-R is the preferred selection. For applications where glass fuse construction is acceptable, 0001.1025 provides an alternative with equivalent electrical performance.

Frequently Asked Questions (FAQ)

Q: Can ABC-1-1/4-R directly replace ABC-1-1/4 in existing circuits?

A: Yes. Both parts share identical current rating (1.25A), voltage rating (250VAC), response time (Fast Blow), and package specification (3AB, 3AG, 1/4" x 1-1/4"). Physical and electrical compatibility is confirmed.

Q: What is the difference between ceramic and glass fuse construction?

A: Both ceramic and glass cartridge fuses with identical electrical ratings (1.25A, 250VAC, Fast Blow) perform the same protective function. The material difference does not affect electrical performance for this specification. Selection between ceramic (ABC-1-1/4-R) and glass (0001.1025) depends on application-specific requirements and design preferences.

Q: Why is ABC-1-1/4 obsolete?

A: The ABC-1-1/4 is classified as obsolete by the manufacturer. ABC-1-1/4-R is the active replacement that maintains equivalent specifications while providing current product support and compliance certifications.

Q: Does the ABC-1-1/4-R require the same holder as the original ABC-1-1/4?

A: Yes. Both parts require 3AB or 3AG fuse holders and are mechanically compatible with the same mounting infrastructure.

Q: Are there RoHS compliance differences between substitutes?

A: Yes. The original ABC-1-1/4 is RoHS non-compliant. Both substitute parts (ABC-1-1/4-R and 0001.1025) achieve ROHS3 compliance, supporting use in applications with RoHS requirements.

Q: What is the breaking capacity specification?

A: Breaking capacity is provided only for the 0001.1025 (1.5kA at rated voltage). This specification is not provided for ABC-1-1/4 or ABC-1-1/4-R in the available data. For applications requiring specific breaking capacity verification, consult manufacturer datasheets.