Equivalent & Substitute Parts: 03420001ZX010

Part Overview

The Littelfuse 03420001ZX010 is a fuse holder cartridge rated for 250VAC at 20A with panel mount configuration. This component is classified as obsolete and is no longer in active production. Due to its obsolete status, identification of functionally equivalent active alternatives is necessary to support ongoing maintenance, repair, and new design requirements where this specification remains applicable.

Substiute Parts

03420001ZX010

Littelfuse Inc.In Stock: 66103420001ZX010 Datasheet

Current PartRFQ

03453LF3HXLN

Littelfuse Inc.In Stock: 93303453LF3HXLN Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 03453LF3HXLN is functionally equivalent to the 03420001ZX010 based on the following critical parameters that determine substitutability:

Matching Electrical Specifications:

• Voltage rating: 250V
• Current rating: 20A
• Fuse type: Cartridge
• Number of circuits: 1

Matching Mechanical Specifications:

• Mounting configuration: Panel Mount
• Fuse size: 0.25" Dia x 1.26" L (6.35mm x 32mm), compatible with 3AG, 1/4" x 1-1/4" (SFE-20) standards
• Termination style: Quick Connect - 0.187" (4.7mm)

Status Advantage:

• The substitute part maintains active product status with current manufacturing availability, whereas the original part is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The 03453LF3HXLN is the direct functional equivalent for applications currently using or specifying the obsolete 03420001ZX010. Selection of this substitute is based on:

Electrical Compatibility: Both parts operate at identical voltage (250V) and current (20A) ratings with single-circuit cartridge fuse holder configuration, ensuring direct functional replacement in existing circuit protection applications.

Mechanical Compatibility: Panel mount configuration and quick-connect termination style (0.187" / 4.7mm) provide identical installation characteristics. The fuse size specification (0.25" Dia x 1.26" L) confirms compatibility with standard 3AG cartridge fuses.

Regulatory Compliance: The substitute part carries active RoHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. The original part's compliance status is not documented.

Availability: The substitute part is in active production with documented inventory availability (908 Pcs), whereas the original part is obsolete with no future manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the 03453LF3HXLN directly replace the 03420001ZX010 in existing installations?

A: Yes. Both parts share identical electrical ratings (250V, 20A), fuse type (cartridge), circuit count (1), and mounting configuration (panel mount). The substitute part is mechanically and electrically compatible for direct replacement.

Q: What fuse types are compatible with the 03453LF3HXLN?

A: The 03453LF3HXLN accepts 3AG cartridge fuses with dimensions 1/4" x 1-1/4" (0.25" Dia x 1.26" L / 6.35mm x 32mm). This is the standard cartridge fuse size for 20A applications.

Q: What is the termination configuration for the 03453LF3HXLN?

A: The substitute part uses Quick Connect termination with 0.187" (4.7mm) spade connectors, providing standard panel mount connection without soldering.

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

A: The substitute part (03453LF3HXLN) is certified RoHS3 compliant and REACH unaffected. The original part's (03420001ZX010) compliance status is not documented. For applications requiring specific regulatory compliance, the substitute part meets current environmental standards.

Q: What is the packaging format for the substitute part?

A: The 03453LF3HXLN is supplied in bulk packaging, suitable for production assembly and direct component procurement.

Q: Why is the original part obsolete?

A: The 03420001ZX010 is classified as obsolete and no longer manufactured. The 03453LF3HXLN from the Littelfuse 345 series represents the current active product line for equivalent 250V, 20A panel mount cartridge fuse holder applications.