AGC-1/2-R Equivalent & Substitute Parts Reference

Part Overview

The AGC-1/2-R is a 500 mA, 250 V AC/DC fast-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This component operates within the temperature range of -55°C to 125°C and requires a 3AB or 3AG fuse holder for installation. The part maintains active product status with 968 units in current inventory.

Substitute parts are identified when equivalent electrical characteristics, mechanical dimensions, and functional performance parameters align with the original specification. This reference provides engineering-grade alternatives for component selection, procurement planning, and design flexibility.

Substiute Parts

AGC-1/2-R

Eaton - Electronics DivisionIn Stock: 1065AGC-1/2-R Datasheet

Current PartRFQ

BK/AGC-1/2-R

Eaton - Electronics DivisionIn Stock: 766BK/AGC-1/2-R Datasheet

DirectRFQ

0001.1021

SCHURTER Inc.In Stock: 10740001.1021 Datasheet

SimilarRFQ

0312.500VXP

Littelfuse Inc.In Stock: 10580312.500VXP Datasheet

SimilarRFQ

0312.500HXP

Littelfuse Inc.In Stock: 40160312.500HXP Datasheet

Parametric EquivalentRFQ

0312.500MXP

Littelfuse Inc.In Stock: 21180312.500MXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AGC-1/2-R is determined by strict alignment of the following parameters:

Critical Matching Parameters:

• Current Rating: 500 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Physical Dimensions: 0.250" Dia x 1.250" L (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)

Secondary Compatibility Parameters:

• Mounting Type: Requires Holder (consistent across all substitutes)
• Operating Temperature Range: -55°C ~ 125°C (minimum requirement)
• Approval Agencies: CSA, UL (preferred for regulatory compliance)

All substitute parts listed below satisfy these critical parameters and are therefore electrically and mechanically interchangeable with the AGC-1/2-R in applications requiring a 500 mA, 250 V AC/DC fast-blow glass cartridge fuse in 3AB/3AG holder format.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Compliance):

The Littelfuse 312 series components (0312.500HXP, 0312.500VXP, 0312.500MXP) are direct parametric equivalents to the AGC-1/2-R. All three parts maintain active product status, carry CE, CSA, and UL approvals, and operate across the full -55°C to 125°C temperature range. These components are suitable for new designs and ongoing production applications.

Direct Manufacturer Alternative (Active Status):

The BK/AGC-1/2-R, manufactured by Eaton - Electronics Division, is a direct equivalent from the same manufacturer. This part carries identical electrical and mechanical specifications with active product status and CSA/UL approval. Selection of this part maintains single-source continuity within the Eaton product line.

Secondary Substitute (Obsolete Status):

The SCHURTER 0001.1021 meets all critical electrical and mechanical parameters but carries obsolete product status. This part operates within a reduced temperature range (-40°C to 85°C) compared to the AGC-1/2-R specification. Use of this component is limited to legacy system maintenance or applications where the narrower temperature range is acceptable.

Selection Basis:

Component selection should prioritize parts with active product status and full regulatory approval (CSA, UL, CE). The Littelfuse 312 series and Eaton BK/AGC-1/2-R are recommended for new applications. The SCHURTER 0001.1021 is suitable only for replacement in existing systems where temperature operating conditions remain within -40°C to 85°C.

Frequently Asked Questions (FAQ)

Q: Can the AGC-1/2-R be replaced with any of the listed substitute parts?

A: Yes, all listed substitute parts are electrically and mechanically interchangeable with the AGC-1/2-R. All parts share identical current rating (500 mA), voltage rating (250 V AC), response time (Fast Blow), and physical dimensions (0.250" Dia x 1.250" L). All require the same 3AB or 3AG fuse holder.

Q: What is the difference between the Littelfuse 0312.500HXP, 0312.500VXP, and 0312.500MXP?

A: These three Littelfuse components are parametric equivalents with identical electrical specifications and physical dimensions. The designations (HXP, VXP, MXP) represent different product variants within the Littelfuse 312 series. All three are active products with CE, CSA, and UL approval.

Q: Why is the SCHURTER 0001.1021 listed as a substitute if it is obsolete?

A: The SCHURTER 0001.1021 meets all critical electrical and mechanical parameters and is included for reference in legacy system maintenance scenarios. However, its obsolete status and reduced operating temperature range (-40°C to 85°C versus -55°C to 125°C) make it unsuitable for new designs. Use this part only when replacing components in existing systems where temperature conditions remain within the narrower range.

Q: Are there any differences in DC cold resistance between the AGC-1/2-R and its substitutes?

A: Yes. The AGC-1/2-R has a DC cold resistance of 0.615 Ohms, while the BK/AGC-1/2-R measures 0.483 Ohms, and the Littelfuse 312 series components measure 0.498 Ohms. These variations are within acceptable tolerances for fast-blow cartridge fuse applications and do not affect functional interchangeability.

Q: What holder types are compatible with these fuses?

A: All listed fuses require a 3AB or 3AG fuse holder. The physical dimensions (0.250" Dia x 1.250" L) are standardized across all substitute parts, ensuring mechanical compatibility with existing holder installations.

Q: Which substitute part has the highest inventory availability?

A: The Littelfuse 0312.500HXP maintains the highest inventory with 3,924 units in stock, followed by 0312.500MXP with 2,052 units. The original AGC-1/2-R has 968 units available.

Q: Are all substitute parts RoHS compliant?

A: Yes. The AGC-1/2-R is RoHS Compliant, while all substitute parts carry ROHS3 Compliant status, indicating full compliance with current RoHS regulations.

Q: What regulatory approvals should I verify for my application?

A: The AGC-1/2-R and BK/AGC-1/2-R carry CSA and UL approvals. The Littelfuse 312 series components (0312.500HXP, 0312.500VXP, 0312.500MXP) carry CE, CSA, and UL approvals. The SCHURTER 0001.1021 carries no specified approval agency. Verify that selected approvals meet your application's regulatory requirements.