Littelfuse 0301030.H Glass Cartridge Fuse 30A 32VAC 1AG Equivalent & Substitute Parts

Part Overview

The Littelfuse 0301030.H is a 30A 32VAC glass cartridge fuse in the 1AG package format (1/4" x 5/8"). This medium-blow fuse is designed for AC/DC applications requiring holder-based installation. The part is currently active in production with 949 units in stock. Glass cartridge fuses of this specification are essential components in electrical protection circuits where reliable overcurrent interruption is required. Substitute parts may be necessary due to inventory constraints, regional availability, or specific application requirements.

Substiute Parts

0301030.H

Littelfuse Inc.In Stock: 10200301030.H Datasheet

Current PartRFQ

AGA-30

Eaton - Electronics DivisionIn Stock: 790AGA-30 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 0301030.H are qualified based on the following critical parameters that must match or be compatible with the original specification:

• Current Rating: 30 A (exact match required)
• Voltage Rating (AC): 32 V (exact match required)
• Package / Case: 1AG, 1/4" x 0.625" (exact match required for holder compatibility)
• Fuse Type: Cartridge, Glass (exact match required)
• Mounting Type: Requires Holder (exact match required)

The Eaton AGA-30 meets all mandatory substitution criteria. While the AGA-30 exhibits a Fast Blow response characteristic compared to the Medium Blow of the original part, both operate within the same electrical and mechanical envelope. The dimensional compatibility ensures direct physical interchangeability within standard 1AG fuse holders.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0301030.H remains the primary selection for applications requiring ROHS3 compliance. The part is active in production with adequate inventory availability.

The Eaton AGA-30 serves as a functional substitute where the following conditions are met:

• The application can accommodate Fast Blow response characteristics in place of Medium Blow operation
• RoHS compliance is not a mandatory requirement
• The 1 kA breaking capacity specification is acceptable for the circuit protection requirement

Both parts share identical electrical ratings (30A, 32VAC), mechanical dimensions (1AG, 1/4" x 5/8"), and holder compatibility. Selection between these parts should be based on compliance requirements and response time characteristics appropriate to the specific circuit application.

Frequently Asked Questions (FAQ)

Q: Can the Eaton AGA-30 be used as a direct replacement for the Littelfuse 0301030.H?

A: The Eaton AGA-30 is mechanically and electrically compatible for installation in standard 1AG fuse holders. Both parts carry identical current (30A) and voltage (32VAC) ratings and share the same physical dimensions. The primary difference is the response time characteristic: AGA-30 is Fast Blow versus the original Medium Blow specification. Substitution is valid when circuit design permits this response time difference.

Q: What does the 1AG package designation mean?

A: 1AG refers to a standardized glass cartridge fuse format with dimensions of 1/4" diameter by 5/8" length (6.35mm x 15.88mm). This designation ensures physical compatibility with 1AG-rated fuse holders. Both the Littelfuse 0301030.H and Eaton AGA-30 conform to this standard.

Q: Are there compliance differences between these parts?

A: Yes. The Littelfuse 0301030.H is ROHS3 compliant, while the Eaton AGA-30 is RoHS non-compliant. Applications subject to RoHS regulations must use the Littelfuse part. The Eaton AGA-30 carries UR approval certification.

Q: What is the significance of Fast Blow versus Medium Blow response?

A: Response time classification indicates how quickly the fuse element melts under overcurrent conditions. Fast Blow fuses interrupt circuits more rapidly than Medium Blow fuses. Circuit design and load characteristics determine which response type is appropriate. Substitution requires confirmation that the faster response of the AGA-30 does not conflict with circuit protection requirements.

Q: Do both parts require a fuse holder for installation?

A: Yes. Both the Littelfuse 0301030.H and Eaton AGA-30 are cartridge-type fuses that require a compatible 1AG fuse holder for installation. They are not panel-mount or screw-base designs.