Littelfuse 01550109ZXA Fuse Holder Cartridge 32V 9A In-Line Equivalent & Substitute Parts

Part Overview

The Littelfuse 01550109ZXA is a cartridge fuse holder rated for 9 amperes at 32 volts, designed for free-hanging in-line mounting applications. This component is part of the 155 series and is currently active in production. The device accommodates 7AG cartridge fuses with dimensions of 0.25" diameter by 0.875" length (6.35mm x 22.23mm). Substitute parts may be required due to inventory availability, application-specific voltage or current requirements, or compliance considerations with specific regulatory standards.

Substiute Parts

01550109ZXA

Littelfuse Inc.In Stock: 105601550109ZXA Datasheet

Current PartRFQ

HRH

Eaton - Electronics DivisionIn Stock: 776HRH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 01550109ZXA is determined by the following critical parameters:

• Voltage Rating: Must be 32V to ensure safe operation within the circuit design envelope
• Fuse Size: Must accommodate 0.25" diameter by 0.875" length cartridge fuses to maintain mechanical compatibility
• Mounting Type: Must be free-hanging in-line configuration to fit the intended installation space
• Number of Circuits: Must be single-circuit to match the electrical architecture
• Termination Style: Must feature wire leads for direct circuit integration

The Eaton HR series fuse holder (part number HRH) shares the same voltage rating, fuse size, mounting type, circuit count, and termination style as the primary part. While the current rating differs (20A versus 9A), this represents an uprated substitute suitable for applications requiring higher current capacity within the same physical and electrical envelope.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 01550109ZXA is ROHS3 compliant and maintains active production status. The Eaton HRH substitute is also in active production but does not meet RoHS3 compliance requirements. Selection between these parts depends on regulatory compliance mandates within the target application. The Eaton HRH provides a higher current rating (20A) while maintaining identical physical dimensions and voltage specifications, making it suitable for applications requiring increased current capacity. The Littelfuse part remains the preferred choice for applications subject to RoHS3 compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the Eaton HRH be used as a direct replacement for the Littelfuse 01550109ZXA?

A: The Eaton HRH shares identical voltage rating, fuse size, mounting configuration, and termination style. The primary difference is the current rating (20A versus 9A) and RoHS compliance status. Mechanical and electrical compatibility is confirmed for the specified parameters.

Q: What is the significance of the different current ratings?

A: The Littelfuse 01550109ZXA is rated for 9 amperes, while the Eaton HRH is rated for 20 amperes. Both holders accommodate the same 7AG cartridge fuse size. The current rating of the holder must align with the circuit protection requirements and the fuse cartridge selected for the application.

Q: Are there compatibility concerns with the RoHS compliance difference?

A: The Littelfuse 01550109ZXA is ROHS3 compliant, while the Eaton HRH is RoHS non-compliant. Applications subject to RoHS3 regulatory requirements must use the Littelfuse part. Applications without RoHS3 mandates may use either part based on availability and current rating requirements.

Q: Will the fuse cartridges be interchangeable between these two holders?

A: Both holders accommodate 0.25" diameter by 0.875" length cartridge fuses (7AG standard). Fuse cartridge selection is independent of the holder manufacturer and depends on the circuit protection requirements of the application.

Q: What are the wire lead specifications for termination?

A: Both parts feature wire lead termination. Specific wire gauge and length information is not provided in the available parameters and must be confirmed through manufacturer datasheets for the respective parts.