Littelfuse 030302.5M Equivalent & Substitute Parts

Part Overview

The Littelfuse 030302.5M is a 2.5 A, 32 V AC/DC glass cartridge fuse in 7AG package format (1/4" x 7/8"). This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing system maintenance and new designs. The part requires a dedicated fuse holder for installation and operates with medium blow response characteristics.

Substiute Parts

030302.5M

Littelfuse Inc.In Stock: 918030302.5M Datasheet

Current PartRFQ

0AGW02.5V

LittelfuseIn Stock: 10450AGW02.5V Datasheet

MFR RecommendedRFQ

AGW-2-1/2

Eaton - Electronics DivisionIn Stock: 710AGW-2-1/2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 030302.5M is determined by the following critical parameters:

• Current Rating: 2.5 A (exact match required)
• Voltage Rating - AC: 32 V (exact match required)
• Package / Case: 7AG format (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Mounting Type: Requires Holder (exact match required)

Two active substitute parts meet these criteria. The Littelfuse 0AGW02.5V provides AC/DC rated operation at 32 V with identical current and package specifications. The Eaton AGW-2-1/2 offers equivalent electrical performance with documented breaking capacity and fast blow response characteristics, also in 7AG package format.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing status, addressing the obsolescence of the 030302.5M.

The Littelfuse 0AGW02.5V (AGW series) maintains manufacturer continuity and extends voltage rating to include 32 V DC operation. This part is recommended for applications requiring dual AC/DC voltage compatibility within the same electrical specifications.

The Eaton AGW-2-1/2 provides equivalent current and voltage ratings with documented breaking capacity of 1 kA at rated voltage and fast blow response. This part is suitable for applications where fast response time is acceptable or preferred over the original medium blow characteristic.

Both parts share identical RoHS non-compliance status with the original component. Physical dimensions show minor length variation (0.875" versus 0.812"), which remains within 7AG package specification tolerances and compatible with standard 7AG fuse holders.

Frequently Asked Questions (FAQ)

Q: Can the 0AGW02.5V replace the 030302.5M in all applications?

A: The 0AGW02.5V matches all critical electrical parameters: 2.5 A current rating, 32 V AC voltage rating, and 7AG package format. The extended DC rating (32 V) provides additional capability without reducing AC performance. Physical dimensions are within 7AG specification tolerances.

Q: What is the difference between the Littelfuse and Eaton substitutes?

A: Both parts meet the core electrical requirements (2.5 A, 32 V AC, 7AG package). The Littelfuse 0AGW02.5V adds 32 V DC rating. The Eaton AGW-2-1/2 specifies fast blow response and 1 kA breaking capacity. Response time differs from the original medium blow characteristic.

Q: Are there compatibility concerns with existing 7AG fuse holders?

A: Both substitute parts are 7AG format and compatible with standard 7AG fuse holders. Minor length variation (0.875" versus 0.812") does not affect holder compatibility.

Q: Do the substitutes maintain the same RoHS compliance status?

A: All three parts (original and substitutes) are RoHS non-compliant. No compliance improvement is available within this product category and specification set.

Q: Which substitute should be selected for new designs?

A: Selection depends on application requirements. For AC-only circuits, either part is acceptable. For circuits requiring DC operation, the Littelfuse 0AGW02.5V is the appropriate choice. For applications where fast response time is required, the Eaton AGW-2-1/2 is suitable.