Littelfuse 0322006.H Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0322006.H is a 6A ceramic cartridge fuse rated for 250V AC and 65V DC operation. This component is classified as obsolete, making identification of suitable substitute parts essential for system maintenance and component replacement in legacy equipment. The fuse is designed for fast-blow response characteristics and requires a compatible holder (3AB, 3AG format, 1/4" x 1-1/4").

Substiute Parts

0322006.H

Littelfuse Inc.In Stock: 10930322006.H Datasheet

Current PartRFQ

BK/ABC-6-R

Eaton - Electronics DivisionIn Stock: 1432BK/ABC-6-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Littelfuse 0322006.H is determined by the following critical parameters:

• Current Rating: Must be 6 A (exact match required)
• Voltage Rating - AC: Must be 250 V (exact match required)
• Voltage Rating - DC: Must be equal to or greater than 65 V
• Fuse Type: Must be Cartridge, Ceramic
• Response Time: Must be Fast Blow
• Package / Case: Must be 3AB, 3AG, 1/4" x 1-1/4" format
• Size / Dimension: Must be 0.250" Dia x 1.250" L (6.35mm x 31.75mm)

The Eaton BK/ABC-6-R meets all substitution criteria with enhanced DC voltage rating (125V DC versus 65V DC), maintaining full compatibility with existing holder assemblies and circuit protection requirements.

Parameter Comparison

Engineering Selection Recommendations

The Eaton BK/ABC-6-R is the direct substitute for the obsolete Littelfuse 0322006.H. Selection is based on the following factors:

Product Status: The Littelfuse component is obsolete, while the Eaton substitute is active and currently manufactured, ensuring long-term availability and supply chain continuity.

Electrical Compatibility: Both components share identical current ratings (6A), AC voltage ratings (250V), fuse type (ceramic cartridge), and response characteristics (fast blow). The Eaton substitute provides enhanced DC voltage rating (125V versus 65V), which is a non-limiting improvement for applications operating at or below 65V DC.

Mechanical Compatibility: Both fuses use the identical 3AB/3AG package format with 0.250" diameter and 1.250" length, ensuring direct physical interchangeability in existing holder assemblies without modification.

Regulatory Compliance: The Eaton substitute carries dual agency approvals (CSA and UL) and is ROHS3 compliant, meeting modern regulatory requirements. The original Littelfuse component is RoHS non-compliant.

Performance Enhancement: The Eaton substitute offers improved breaking capacity (200A AC, 10kA DC versus 100A) and lower DC cold resistance (0.021 Ohms versus 0.027 Ohms), providing superior fault protection characteristics.

Frequently Asked Questions (FAQ)

Q: Can the Eaton BK/ABC-6-R be used as a direct replacement for the Littelfuse 0322006.H?

A: Yes. Both components are 6A ceramic cartridge fuses with identical AC voltage ratings (250V), identical package format (3AB, 3AG, 1/4" x 1-1/4"), and identical response time (fast blow). The Eaton substitute is mechanically and electrically compatible with all existing holder assemblies designed for the Littelfuse component.

Q: What is the significance of the higher DC voltage rating on the Eaton substitute?

A: The Eaton BK/ABC-6-R is rated for 125V DC compared to the original 65V DC rating. This represents an enhanced capability that does not limit substitution. Applications operating at 65V DC or lower will function identically with the substitute component.

Q: Are there any holder compatibility issues?

A: No. Both fuses use the 3AB and 3AG holder format with identical physical dimensions (0.250" diameter x 1.250" length). No holder modifications or replacements are required.

Q: Why is RoHS compliance relevant for this substitution?

A: The Littelfuse 0322006.H is RoHS non-compliant, while the Eaton BK/ABC-6-R is ROHS3 compliant. For new equipment designs or systems subject to RoHS regulations, the Eaton substitute ensures regulatory compliance without functional compromise.

Q: How do the breaking capacity ratings differ?

A: The Littelfuse component has a breaking capacity of 100A at rated voltage. The Eaton substitute provides 200A AC and 10kA DC breaking capacity. Higher breaking capacity indicates superior fault protection capability and is not a limiting factor for substitution.

Q: Is the lower DC cold resistance of the Eaton substitute significant?

A: The Eaton substitute has 0.021 Ohms DC cold resistance versus 0.027 Ohms for the original. Lower resistance reduces voltage drop across the fuse during normal operation, representing a minor performance improvement with no negative impact on substitution suitability.