FN5045-48-34 Equivalent & Substitute Parts

Part Overview

The FN5045-48-34 is a three-phase (Delta) EMC/EMI line filter rated for 48 A AC operation with chassis mount configuration and terminal block termination. This component is designed for regenerative motor drive applications requiring single-stage filtering. The part is currently obsolete, necessitating identification of functionally equivalent alternatives that maintain compatibility with existing system requirements.

Substiute Parts

FN5045-48-34

Schaffner EMC Inc.In Stock: 896FN5045-48-34 Datasheet

Current PartRFQ

FN5420-60-34-E2FXT

Schaffner EMC Inc.In Stock: 1014FN5420-60-34-E2FXT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The FN5420-60-34-E2FXT qualifies as a manufacturer-recommended substitute based on the following alignment of critical parameters:

Matching Criteria:

• Filter Type: Both are three-phase (Delta) configurations
• Configuration: Both employ single-stage filtering architecture
• Mounting Type: Both utilize chassis mount design
• Termination Style: Both feature terminal block termination
• Application: Both are specified for regenerative motor drive use
• Compliance: Both maintain ROHS3 compliance and EAR99 ECCN classification

Functional Differences: The substitute part operates at a higher current rating (60 A versus 48 A) and provides extended operating temperature range (-40°C ~ 70°C versus -25°C ~ 70°C). The substitute includes additional voltage specifications and expanded approval certifications (CE, cURus, UKCA versus cURus only). Inductance differs between parts (735 µH versus 1.1 mH).

Parameter Comparison

Engineering Selection Recommendations

The FN5420-60-34-E2FXT is the manufacturer-recommended substitute for the obsolete FN5045-48-34. Selection of this substitute is supported by:

• Active product status ensuring ongoing availability and supply chain continuity
• Identical filter topology (three-phase Delta, single-stage) and mechanical interface (chassis mount, terminal block)
• Identical application classification (regenerative motor drive)
• Higher current capacity (60 A) providing operational margin above the original 48 A rating
• Extended operating temperature range (-40°C ~ 70°C) covering the original specification
• Expanded regulatory approvals (CE, cURus, UKCA) exceeding the original cURus certification
• Consistent ECCN and HTSUS classification

The substitute part is suitable for direct replacement in systems originally specified with the FN5045-48-34, provided that the mechanical envelope and electrical interface compatibility are confirmed for the specific installation.

Frequently Asked Questions (FAQ)

Q: Can the FN5420-60-34-E2FXT directly replace the FN5045-48-34 in existing installations?

A: The substitute part maintains identical filter topology, mounting configuration, and termination style. Compatibility depends on verification of mechanical envelope fit within the chassis and confirmation that the electrical interface connections align with the original installation.

Q: What is the significance of the higher 60 A current rating on the substitute part?

A: The increased current rating indicates the substitute part can handle higher current loads than the original 48 A specification. This provides operational margin and does not prevent use in applications rated for 48 A or lower.

Q: How do the inductance values differ between the two parts?

A: The FN5045-48-34 specifies 1.1 mH inductance, while the FN5420-60-34-E2FXT specifies 735 µH. This difference reflects the different electrical design of the substitute part and should be evaluated against system filtering requirements.

Q: What certifications does the substitute part carry?

A: The FN5420-60-34-E2FXT carries CE, cURus, and UKCA approvals, providing broader regulatory coverage than the original part's cURus certification alone.

Q: Is the substitute part currently available?

A: The FN5420-60-34-E2FXT is listed as active product status with 946 pieces in stock, ensuring availability for procurement and deployment.