Littelfuse 030301.5M Equivalent & Substitute Parts

Part Overview

The Littelfuse 030301.5M is a 1.5 A, 32 V AC/DC glass cartridge fuse with a 7AG form factor (1/4" x 7/8"). This component is classified as obsolete, necessitating identification of active equivalent parts for continued system support and procurement. The fuse requires a dedicated holder for installation and operates with medium blow response characteristics.

Substiute Parts

030301.5M

Littelfuse Inc.In Stock: 1084030301.5M Datasheet

Current PartRFQ

0AGW01.5V

Littelfuse Inc.In Stock: 9100AGW01.5V Datasheet

MFR RecommendedRFQ

AGW-1-1/2

Eaton - Electronics DivisionIn Stock: 686AGW-1-1/2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 030301.5M is determined by the following mandatory parameters:

• Current Rating: 1.5 A (exact match required)
• Voltage Rating - AC: 32 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: 7AG form factor (exact match required)
• Mounting Type: Requires Holder (exact match required)

The identified substitute parts meet all critical electrical and mechanical parameters. Variations in response time classification, DC voltage rating capability, and dimensional tolerances within the 7AG standard do not preclude substitution when AC voltage and current ratings are identical.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing support, addressing the obsolescence status of the 030301.5M.

0AGW01.5V (Littelfuse Inc.): This part maintains manufacturer continuity with the original component. It provides explicit DC voltage rating capability (32 V) in addition to AC rating, expanding application flexibility. The AGW series represents the current Littelfuse offering for this electrical specification.

AGW-1-1/2 (Eaton - Electronics Division): This part meets all mandatory electrical and mechanical parameters. It is supplied in bulk packaging and includes specified breaking capacity (1kA) and DC cold resistance (0.08 Ohms) data. The fast blow response time differs from the original medium blow classification.

Both parts are RoHS non-compliant, consistent with the original component's compliance status.

Frequently Asked Questions (FAQ)

Q: Can the 0AGW01.5V and AGW-1-1/2 be used interchangeably with the 030301.5M?

A: Both parts satisfy the mandatory substitution criteria: 1.5 A current rating, 32 V AC voltage rating, glass cartridge fuse type, and 7AG package form factor. Physical dimensions vary slightly within 7AG standard tolerances. Both are compatible with existing 7AG fuse holders.

Q: What is the significance of the response time difference between the original medium blow and the AGW-1-1/2 fast blow classification?

A: Response time affects the fuse's operating characteristics under transient conditions. The original 030301.5M specifies medium blow response. The AGW-1-1/2 specifies fast blow response. Application-specific circuit protection requirements determine whether this difference is acceptable for your system.

Q: Why are the substitute parts slightly longer (0.875" vs. 0.812")?

A: Both substitute parts measure 0.875" in length, compared to the original 0.812". This variation remains within 7AG standard specifications. Verify that your fuse holder accommodates this dimensional tolerance before installation.

Q: Are there DC voltage rating implications when selecting between these parts?

A: The 030301.5M does not specify a DC voltage rating. The 0AGW01.5V explicitly rates 32 V DC, providing documented DC capability. The AGW-1-1/2 does not specify DC rating. If your application requires DC operation, the 0AGW01.5V provides explicit certification for this duty.

Q: What is the inventory status for these substitute parts?

A: 0AGW01.5V: 893 pieces in stock. AGW-1-1/2: 667 pieces in stock. Both are available as new original components.