Equivalent & Substitute Parts for Littelfuse 0332009.MXP Ceramic Fuse

Part Overview

The Littelfuse 0332009.MXP is a 9 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation. This component is classified as obsolete, necessitating identification of equivalent substitute parts for continued system support and maintenance applications. The fuse is designed for use in 3AB, 3AG holder configurations and provides fast-blow response characteristics suitable for circuit protection in industrial and commercial equipment.

Substiute Parts

0332009.MXP

Littelfuse Inc.In Stock: 10110332009.MXP Datasheet

Current PartRFQ

0332009.HXP

Littelfuse Inc.In Stock: 10570332009.HXP Datasheet

Parametric EquivalentRFQ

BK/GBB-9-R

Eaton - Electronics DivisionIn Stock: 915BK/GBB-9-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Littelfuse 0332009.MXP is determined by strict equivalence across the following electrical and mechanical parameters:

• Current Rating: 9 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Voltage Rating - DC: 125 V (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Mounting Type: Requires Holder (exact match required)

Two substitute parts meet these criteria: the Littelfuse 0332009.HXP (parametric equivalent) and the Eaton BK/GBB-9-R (manufacturer-recommended equivalent).

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0332009.HXP serves as a direct parametric equivalent to the 0332009.MXP, with identical electrical ratings, response characteristics, and physical dimensions. Both components are obsolete products within the Littelfuse 332 series and carry equivalent regulatory certifications (CE, cULus, PSE).

The Eaton BK/GBB-9-R is an active product that meets all required electrical and mechanical parameters. This component offers higher breaking capacity (10 kA versus 100 A) and carries CSA and UR certifications. The slightly elevated DC cold resistance (0.0107 Ohms versus 0.0077 Ohms) remains within acceptable tolerance for circuit protection applications. The active product status of the Eaton component provides superior long-term availability for replacement and maintenance scenarios.

Frequently Asked Questions (FAQ)

Q: Can the Eaton BK/GBB-9-R be used as a direct replacement for the Littelfuse 0332009.MXP?

A: Yes. Both components share identical current ratings (9 A), voltage ratings (250 V AC / 125 V DC), fuse type (ceramic cartridge), response time (fast blow), and physical dimensions (3AB, 3AG, 1/4" x 1-1/4"). The components are mechanically and electrically interchangeable within the same holder configuration.

Q: What is the significance of the different breaking capacities listed?

A: The Littelfuse components specify 100 A breaking capacity, while the Eaton component specifies 10 kA. Both values exceed the rated current of 9 A and are suitable for circuit protection. The higher breaking capacity of the Eaton component provides additional margin in high-fault-current environments.

Q: Are there differences in regulatory compliance between these parts?

A: The Littelfuse 0332009.MXP and 0332009.HXP carry CE, cULus, and PSE certifications. The Eaton BK/GBB-9-R carries CSA and UR certifications. Selection should be based on the specific regulatory requirements of the target application and equipment.

Q: Why is the Littelfuse 0332009.MXP classified as obsolete?

A: Obsolete status indicates that the manufacturer has discontinued production. The Littelfuse 0332009.HXP is also obsolete. For new designs and long-term availability, the active Eaton BK/GBB-9-R is the recommended selection.

Q: Does the slight difference in DC cold resistance affect circuit performance?

A: The DC cold resistance difference between the Littelfuse components (0.0077 Ohms) and the Eaton component (0.0107 Ohms) is minimal and does not affect circuit protection performance in standard applications. Both values are negligible relative to typical circuit impedances.