Littelfuse 0322030.H Ceramic Fuse 30A 65VAC/VDC 3AB Equivalent & Substitute Parts

Part Overview

The Littelfuse 0322030.H is a 30 A ceramic cartridge fuse rated for 65 V AC and 65 V DC operation in a 3AB, 3AG form factor (1/4" x 1-1/4"). This part is classified as obsolete and requires a compatible fuse holder for installation. Due to its obsolete status, equivalent substitute parts from the same manufacturer series and compatible alternatives from other manufacturers are available to maintain circuit protection functionality in existing designs.

Substiute Parts

0322030.H

Littelfuse Inc.In Stock: 7820322030.H Datasheet

Current PartRFQ

0322030.HXP

Littelfuse Inc.In Stock: 54290322030.HXP Datasheet

DirectRFQ

0322030.MXP

Littelfuse Inc.In Stock: 9920322030.MXP Datasheet

Parametric EquivalentRFQ

0322030.VXP

Littelfuse Inc.In Stock: 7230322030.VXP Datasheet

Parametric EquivalentRFQ

GBB-30-R

Eaton - Electronics DivisionIn Stock: 719GBB-30-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 0322030.H is determined by the following critical parameters that must remain constant:

• Current Rating: 30 A
• Voltage Rating - AC: 65 V minimum
• Voltage Rating - DC: 65 V minimum
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4"
• Fuse Type: Cartridge, Ceramic
• Response Time: Fast Blow
• Mounting Type: Requires Holder

Substitute parts are grouped into two categories:

Direct Manufacturer Equivalents (Littelfuse Series 322): Parts 0322030.HXP, 0322030.MXP, and 0322030.VXP maintain identical electrical specifications and form factor. These parts differ only in packaging configuration (bulk) and product status (active), making them direct functional replacements.

Cross-Manufacturer Alternative (Eaton GBB-30-R): The Eaton GBB-30-R maintains the same current rating, package dimensions, and form factor. However, it features higher voltage ratings (250 V AC / 125 V DC), which exceeds the original specification but remains compatible for use in circuits rated at or below 65 V AC/DC.

Parameter Comparison

Engineering Selection Recommendations

Littelfuse Series 322 Substitutes (0322030.HXP, 0322030.MXP, 0322030.VXP): These parts are recommended as primary replacements for the obsolete 0322030.H. All three maintain identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. The Littelfuse alternatives provide expanded approval certifications (CE and UL) and documented operating temperature ranges (-55°C to 125°C), supporting broader application requirements. Selection among these three variants depends on packaging and inventory availability; all are functionally equivalent.

Eaton GBB-30-R: This cross-manufacturer alternative is suitable for applications where the circuit voltage does not exceed 65 V AC or 65 V DC. The higher voltage rating provides additional safety margin in low-voltage circuits. The GBB-30-R carries CSA and UR approvals and maintains ROHS3 compliance. DC cold resistance is slightly lower (0.00206 Ohms vs. 0.0023 Ohms), which may be relevant in precision current-limiting applications.

Frequently Asked Questions (FAQ)

Q: Can I use the Littelfuse 0322030.HXP, 0322030.MXP, or 0322030.VXP interchangeably with the 0322030.H?

A: Yes. All three Littelfuse alternatives maintain identical current rating (30 A), voltage ratings (65 V AC/DC), package dimensions (3AB, 3AG, 1/4" x 1-1/4"), and response time (fast blow). The differences are packaging configuration and product status; the obsolete 0322030.H is replaced by these active variants.

Q: What is the difference between 0322030.HXP, 0322030.MXP, and 0322030.VXP?

A: These three parts are parametrically equivalent. The suffix designations (HXP, MXP, VXP) indicate different packaging or distribution configurations. All three share identical electrical specifications, breaking capacity, and compliance certifications. Selection should be based on packaging availability and inventory.

Q: Can I use the Eaton GBB-30-R in place of the Littelfuse 0322030.H?

A: Yes, provided your circuit operates at or below 65 V AC and 65 V DC. The GBB-30-R has higher voltage ratings (250 V AC / 125 V DC), which is compatible with lower-voltage applications. The 30 A current rating, fast-blow response, and 3AB package form factor are identical. Verify that your fuse holder accepts the GBB series before installation.

Q: Does the fuse holder need to be changed when substituting parts?

A: No. All substitute parts use the same 3AB, 3AG package form factor (1/4" x 1-1/4" dimensions). Existing 3AB or 3AG fuse holders are compatible with all listed substitutes without modification.

Q: Are there compliance differences between the original and substitute parts?

A: The original 0322030.H is UL-approved and RoHS non-compliant. All substitute parts are ROHS3 compliant and carry expanded certifications: Littelfuse alternatives include CE and UL approvals; the Eaton GBB-30-R carries CSA and UR approvals. For new designs or applications requiring RoHS compliance, the substitute parts are preferred.

Q: What is the significance of the melting I²t value listed for some parts?

A: The melting I²t value (540 for Littelfuse substitutes) characterizes the thermal energy required to melt the fuse element. This parameter is provided for engineering analysis but does not affect interchangeability for standard circuit protection applications where current rating and voltage rating are the primary selection criteria.