FN5040-480-99 Equivalent & Substitute Parts

Part Overview

The FN5040-480-99 is a three-phase (Delta) EMC/EMI line filter rated for 480 A AC, designed for chassis mount applications with terminal block termination. This component is classified as obsolete and is primarily used in regenerative motor drive applications. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for system maintenance, redesign, and procurement continuity.

Substiute Parts

FN5040-480-99

Schaffner EMC Inc.In Stock: 989FN5040-480-99 Datasheet

Current PartRFQ

FN5420-480-99-E0XXT

Schaffner EMC Inc.In Stock: 779FN5420-480-99-E0XXT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FN5040-480-99 is determined by the following critical parameters:

• Filter Type & Configuration: Three-phase (Delta) single-stage topology must be maintained for electromagnetic compatibility in the target application.
• Current Rating: The substitute must support the system's current demand. The FN5040-480-99 is rated for 480 A; substitutes with comparable or higher current ratings are acceptable.
• Mounting & Termination: Chassis mount with terminal block termination ensures mechanical and electrical compatibility with existing installations.
• Inductance: The 110 µH inductance value is application-specific; substitutes with similar inductance characteristics maintain filtering performance.
• Operating Temperature: The operating range must encompass the thermal environment of the application.
• Regulatory Compliance: Approval by recognized agencies (cURus, CE, UKCA) ensures safety and electromagnetic compliance standards are met.

The FN5420-480-99-E0XXT qualifies as a substitute based on matching filter topology, mounting configuration, termination style, and application domain, with enhanced regulatory coverage and active product status.

Parameter Comparison

Engineering Selection Recommendations

The FN5420-480-99-E0XXT is the manufacturer-recommended substitute for the obsolete FN5040-480-99. Selection is justified on the following engineering grounds:

• Topology Equivalence: Both parts maintain three-phase (Delta) single-stage filter architecture, ensuring electromagnetic performance consistency in regenerative motor drive applications.
• Current Compatibility: The substitute's 477 A rating is within 0.6% of the original 480 A specification, providing functional equivalence for the target application.
• Regulatory Enhancement: The substitute carries expanded certifications (CE, cURus, UKCA) compared to the original (cURus only), providing broader compliance coverage for international deployment.
• Active Product Status: The FN5420-480-99-E0XXT is an active product with confirmed inventory availability (763 pcs), ensuring long-term supply chain reliability.
• Extended Operating Range: The substitute's -40°C ~ 70°C operating temperature range exceeds the original -25°C ~ 70°C specification, accommodating broader environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the FN5420-480-99-E0XXT directly replace the FN5040-480-99 in existing installations?

A: Yes. Both parts share identical filter topology (three-phase Delta, single-stage), mounting configuration (chassis mount), and termination style (terminal block). The 477 A rating of the substitute is functionally equivalent to the 480 A original for regenerative motor drive applications.

Q: What is the significance of the inductance difference (110 µH vs. 92 µH)?

A: The inductance values are both provided by the manufacturer for their respective designs. The substitute's 92 µH inductance is part of the FN5420 series design specification and is appropriate for the intended application domain. No field modification is required.

Q: Does the substitute support the same voltage ratings as the original?

A: The original FN5040-480-99 does not specify voltage ratings in the provided data. The substitute FN5420-480-99-E0XXT is rated for 480 V phase-to-ground/neutral and 530 V phase-to-phase, which are standard three-phase industrial voltage specifications.

Q: What is the impact of the extended operating temperature range (-40°C vs. -25°C minimum)?

A: The substitute's lower minimum operating temperature (-40°C) provides enhanced capability for cold environment applications. This represents an improvement over the original specification and does not restrict use in the original operating envelope.

Q: Are there any packaging differences between the two parts?

A: The original FN5040-480-99 packaging is listed as "-" (not specified). The substitute FN5420-480-99-E0XXT is supplied in bulk packaging. Confirm packaging requirements with your procurement process.

Q: What certifications does the substitute carry?

A: The FN5420-480-99-E0XXT carries CE, cURus, and UKCA approvals, providing compliance for European, North American, and United Kingdom markets. The original carried cURus certification only.