Littelfuse 0511030.M Fuse Cartridge Equivalent & Substitute Parts

Part Overview

The Littelfuse 0511030.M is a 30A 32V cartridge fuse in the 5AG form factor (10mm x 38mm) designed for applications requiring a fuse holder. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and component procurement. The 5AG midget cartridge fuse format remains widely available through active manufacturers, enabling direct functional replacement.

Substiute Parts

0511030.M

Littelfuse Inc.In Stock: 8180511030.M Datasheet

Current PartRFQ

AGU-30

Eaton - Bussmann Electrical DivisionIn Stock: 763AGU-30 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Littelfuse 0511030.M is based on the following critical parameters:

• Current Rating: 30 A (exact match required)
• Voltage Rating: 32 V (exact match required)
• Package / Case: 5AG, 10mm x 38mm midget cartridge format (exact match required)
• Mounting Type: Requires Holder (mechanical compatibility)
• Fuse Type: Cartridge format (functional equivalence)

The Eaton - Bussmann Electrical Division AGU-30 meets all substitution criteria. Both parts share identical current and voltage ratings, use the same 5AG midget cartridge package, and require a fuse holder for installation. The AGU-30 is classified as active product status with RoHS compliance, providing a modern equivalent for the obsolete Littelfuse part.

Parameter Comparison

Engineering Selection Recommendations

The Eaton - Bussmann Electrical Division AGU-30 is the direct functional equivalent for the obsolete Littelfuse 0511030.M. Both parts are rated for 30 A at 32 V and use the identical 5AG midget cartridge package format. The AGU-30 maintains active product status, ensuring long-term availability and supply chain continuity.

The AGU-30 provides RoHS compliance, addressing regulatory requirements that may apply to new system designs or component replacements. The fast-blow response characteristic of the AGU-30 is consistent with typical midget fuse applications and does not introduce functional incompatibility with the original design.

Physical dimensions show minor variation in diameter (0.410" vs. 0.379"), which remains within the tolerance of standard 5AG fuse holders. Both parts require identical holder installations and present no mechanical compatibility issues.

Frequently Asked Questions (FAQ)

Q: Can the Eaton AGU-30 be used as a direct replacement for the Littelfuse 0511030.M?

A: Yes. Both parts share identical current (30 A) and voltage (32 V) ratings, use the same 5AG midget cartridge package, and require a fuse holder for installation. The AGU-30 is mechanically and electrically compatible.

Q: What is the significance of the "Fast Blow" response time on the AGU-30?

A: The AGU-30 is specified as fast-blow, meaning it responds quickly to overcurrent conditions. The original Littelfuse part does not specify response time in the provided data. Fast-blow characteristics are standard for midget fuse applications and do not create incompatibility with typical circuit protection designs.

Q: Are there dimensional differences between these parts?

A: Minor diameter variation exists (0.410" for AGU-30 vs. 0.379" for the original). Both parts conform to the 5AG standard and fit within standard fuse holder tolerances. Length is identical at 1.500".

Q: Does RoHS compliance affect substitution?

A: The AGU-30 is RoHS compliant while the original is non-compliant. For new designs or systems with RoHS requirements, the AGU-30 provides regulatory alignment. For legacy system maintenance, both parts remain functionally equivalent.

Q: What is the HTSUS classification for these fuses?

A: Both parts share the same HTSUS code 8536.10.0040, confirming they are classified identically for tariff and trade purposes.