FX0418/1 Equivalent & Substitute Parts

Part Overview

The FX0418/1 is a cartridge fuse holder manufactured by Bulgin, designed for panel mount applications with a 20 A current rating at 250V. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing maintenance and new design implementations. The Touchproof® PC2 series holder accommodates 3AG cartridge fuses (0.25" Dia x 1.26" L) and features solder lug termination with silver-plated brass contacts.

Substiute Parts

FX0418/1

BulginIn Stock: 1056FX0418/1 Datasheet

Current PartRFQ

D0345RA

BulginIn Stock: 975D0345RA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FX0418/1 is determined by the following critical parameters:

• Voltage Rating: Must equal or exceed 250V
• Fuse Size: Must accommodate 3AG cartridge fuses (0.25" Dia x 1.26" L)
• Mounting Type: Panel mount configuration required
• Number of Circuits: Single circuit design
• Termination Style: Solder lug connection
• Fuse Type: Cartridge format

The D0345RA meets these core substitution criteria. However, the current rating differs at 16 A versus the original 20 A specification. This represents a downgrade in current capacity and must be evaluated against circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The D0345RA serves as a functional substitute for the FX0418/1 based on matching voltage, fuse size, mounting configuration, and circuit count. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment.

The primary consideration is the current rating reduction from 20 A to 16 A. Selection of the D0345RA is appropriate only when circuit current requirements do not exceed 16 A. For applications requiring the full 20 A capacity of the original FX0418/1, alternative solutions must be evaluated.

The D0345RA is currently in active production status, providing supply continuity for the obsolete FX0418/1.

Frequently Asked Questions (FAQ)

Q: Can the D0345RA directly replace the FX0418/1 in all applications?

A: The D0345RA is mechanically and electrically compatible for panel mount installations using 3AG cartridge fuses at 250V. However, the reduced current rating of 16 A versus 20 A limits its use to circuits operating at or below 16 A.

Q: What is the significance of the current rating difference?

A: The current rating defines the maximum continuous current the fuse holder can safely conduct. The FX0418/1 is rated for 20 A, while the D0345RA is rated for 16 A. Using the D0345RA in a 20 A circuit may result in thermal stress and reduced component lifespan.

Q: Are both parts compatible with the same cartridge fuses?

A: Yes. Both the FX0418/1 and D0345RA accommodate 3AG cartridge fuses with dimensions 0.25" Dia x 1.26" L (6.35mm x 32mm).

Q: What is the difference between the Touchproof® PC2 series and the D0345RA?

A: The FX0418/1 belongs to the Touchproof® PC2 series. The D0345RA series designation is not specified in the provided data. Both are single-circuit, panel-mount cartridge fuse holders from Bulgin.

Q: Does the D0345RA have the same termination method?

A: Yes. Both components use solder lug termination for circuit board or panel integration.