Littelfuse 0307030.M Glass Cartridge Fuse 30A 32VAC Equivalent & Substitute Parts

Part Overview

The Littelfuse 0307030.M is a 30 A, 32 V AC/DC glass cartridge fuse in the SFE series with fast-blow response characteristics. This component is classified as obsolete, requiring identification of active equivalent alternatives for continued system support and procurement. The part requires a dedicated fuse holder for installation and operates with a non-standard cartridge form factor.

Substiute Parts

0307030.M

Littelfuse Inc.In Stock: 9370307030.M Datasheet

Current PartRFQ

0SFE030.V

Littelfuse Inc.In Stock: 14280SFE030.V Datasheet

DirectRFQ

0307030.H

Littelfuse Inc.In Stock: 7880307030.H Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0307030.M is determined by the following critical parameters:

• Current Rating: 30 A (exact match required)
• Voltage Rating - AC: 32 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Size / Dimension: 0.250" Dia x 1.437" L (exact match required)
• Series: SFE (exact match required)

Two substitute parts meet these criteria and are available as active alternatives.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts satisfy the electrical and mechanical requirements of the 0307030.M based on provided specifications.

0SFE030.V is the direct manufacturer substitute with active product status. This part provides explicit DC voltage rating (32 V) and achieves ROHS3 compliance. Bulk packaging is available.

0307030.H is a parametric equivalent maintaining the same dimensional tolerance (6.35mm x 36.51mm) and UL approval agency certification as the original part. This part retains RoHS non-compliant status consistent with the main part.

Selection between these alternatives depends on compliance requirements and packaging preferences specific to the application.

Frequently Asked Questions (FAQ)

Q: Can 0SFE030.V replace 0307030.M in all applications?

A: Yes, provided the application does not require RoHS non-compliant components. The 0SFE030.V matches all critical electrical and mechanical parameters and is actively manufactured.

Q: What is the difference between 0SFE030.V and 0307030.H?

A: Both parts meet the electrical specifications. 0SFE030.V is ROHS3 compliant with bulk packaging; 0307030.H maintains UL approval and RoHS non-compliant status matching the original part's compliance profile.

Q: Are the dimensional differences between substitutes significant?

A: The length tolerance difference (36.50mm vs 36.51mm) is within standard manufacturing variation for cartridge fuses and does not affect holder compatibility.

Q: Does the DC voltage rating on 0SFE030.V affect compatibility?

A: No. The explicit 32 V DC rating on 0SFE030.V provides additional specification clarity but does not change the electrical performance in AC-only applications.

Q: Which substitute should be selected for new designs?

A: Selection depends on regulatory and compliance requirements. For ROHS3-compliant applications, use 0SFE030.V. For applications requiring RoHS non-compliant components with UL certification, use 0307030.H.