Littelfuse 0303003.M Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0303003.M is a 3 A, 32 V AC DC glass cartridge fuse in 7AG package format (1/4" x 7/8"). This component is classified as obsolete and requires a holder for installation. Due to its obsolete product status, equivalent and substitute parts from active manufacturers are necessary for ongoing system maintenance and new designs.

Substiute Parts

0303003.M

Littelfuse Inc.In Stock: 10640303003.M Datasheet

Current PartRFQ

0AGW003.V

Littelfuse Inc.In Stock: 7200AGW003.V Datasheet

MFR RecommendedRFQ

AGW-3

Eaton - Electronics DivisionIn Stock: 939AGW-3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0303003.M are qualified based on the following critical parameters:

• Current Rating: 3 A (exact match required)
• Voltage Rating - AC: 32 V (exact match required)
• Package / Case: 7AG format with compatible physical dimensions
• Fuse Type: Cartridge, Glass (exact match required)
• Mounting Type: Requires Holder (exact match required)

The substitute parts listed below meet all these criteria and are sourced from active product lines, ensuring availability and ongoing manufacturer support.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are sourced from active product lines with current manufacturer support, addressing the obsolescence of the 0303003.M.

The 0AGW003.V from Littelfuse Inc. provides direct manufacturer continuity and includes DC voltage rating specification (32 V DC), extending application flexibility beyond AC-only operation.

The AGW-3 from Eaton - Electronics Division offers an alternative from an established fuse manufacturer with active product status and specified breaking capacity (1 kA) and DC cold resistance (0.036 Ohms).

Both substitute parts maintain identical current and AC voltage ratings, package format, and mounting requirements. Physical dimension variations (length: 0.812" vs. 0.875") are within 7AG package tolerance specifications and do not affect holder compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 0AGW003.V or AGW-3 be used as direct replacements for the 0303003.M?

A: Yes. Both substitute parts meet the critical electrical parameters: 3 A current rating, 32 V AC voltage rating, 7AG cartridge glass fuse type, and holder-based mounting. Physical dimensions are compatible with standard 7AG holders.

Q: What is the difference between the 0AGW003.V and AGW-3?

A: Both parts share identical current, AC voltage, package, and mounting specifications. The 0AGW003.V includes specified DC voltage rating (32 V DC). The AGW-3 specifies breaking capacity (1 kA) and DC cold resistance (0.036 Ohms). Manufacturer sourcing differs: Littelfuse Inc. versus Eaton - Electronics Division.

Q: Are there physical dimension differences between these parts?

A: The 0303003.M measures 0.250" Dia x 0.812" L. Both substitute parts measure 0.250" Dia x 0.875" L. This 0.063" length difference is within 7AG package tolerance and does not affect standard holder compatibility.

Q: Do all parts share the same RoHS compliance status?

A: Yes. The main part and both substitutes are RoHS non-compliant.

Q: Which substitute part should be selected for new designs?

A: Selection between 0AGW003.V and AGW-3 depends on sourcing preference and application requirements. Both are active products with equivalent electrical performance for 3 A, 32 V AC applications.