FN258P-55-34 Equivalent & Substitute Parts

Part Overview

The FN258P-55-34 is a three-phase (Delta) EMC/EMI line filter rated for 55 A with chassis mount configuration and terminal block termination. This component is designed for inverters and power drive systems operating at DC ~ 60Hz frequencies. The part is classified as Not For New Designs, making identification of functionally equivalent alternatives necessary for ongoing system support and new platform development.

Substiute Parts

FN258P-55-34

Schaffner EMC Inc.In Stock: 1068FN258P-55-34 Datasheet

Current PartRFQ

FN3288-50-53-C35-R65

Schaffner EMC Inc.In Stock: 1082FN3288-50-53-C35-R65 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FN258P-55-34 is determined by the following critical parameters:

• Filter Type: Three Phase (Delta) configuration
• Configuration: Two Stage topology
• Mounting Type: Chassis Mount form factor
• Termination Style: Terminal Block interface
• Frequency Range: DC ~ 60Hz operating capability
• Applications: Inverters and Power Drive Systems compatibility

The FN3288-50-53-C35-R65 qualifies as a substitute based on matching filter type, configuration, mounting, termination, and frequency specifications. Current rating variance (50 A vs. 55 A) and voltage rating differences are acceptable within the substitution framework when system design permits.

Parameter Comparison

Engineering Selection Recommendations

The FN3288-50-53-C35-R65 is an active product from Schaffner EMC Inc. and represents the primary substitute for the FN258P-55-34. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment.

The FN3288-50-53-C35-R65 provides an extended operating temperature range (-40°C ~ 100°C vs. -25°C ~ 100°C), offering improved performance in low-temperature environments. The higher voltage ratings (530V phase-to-phase, 305V phase-to-ground) accommodate broader system voltage specifications.

Current rating reduction from 55 A to 50 A requires verification that system load profiles remain within the 50 A specification. The active product status of the FN3288-50-53-C35-R65 ensures ongoing availability and support compared to the Not For New Designs classification of the FN258P-55-34.

Frequently Asked Questions (FAQ)

Q: Can the FN3288-50-53-C35-R65 directly replace the FN258P-55-34 in existing designs?

A: Direct replacement is possible when system current requirements do not exceed 50 A and voltage specifications align with the 530V/305V ratings of the substitute. Mechanical compatibility is confirmed through matching chassis mount and terminal block configurations.

Q: What is the significance of the current rating difference between these parts?

A: The FN258P-55-34 is rated for 55 A while the FN3288-50-53-C35-R65 is rated for 50 A. System designs operating at or below 50 A can use the substitute without derating. Systems requiring the full 55 A capacity must retain the original part or identify alternative solutions.

Q: How do voltage ratings affect substitution?

A: The FN258P-55-34 operates at 480V phase-to-phase and 277V phase-to-ground. The FN3288-50-53-C35-R65 operates at 530V phase-to-phase and 305V phase-to-ground. The substitute accommodates higher voltage systems. Systems operating at the original voltage specifications remain compatible with the substitute.

Q: What is the impact of product status on component selection?

A: The FN258P-55-34 carries a Not For New Designs status, indicating discontinued development support. The FN3288-50-53-C35-R65 maintains Active status, ensuring continued manufacturing, availability, and technical support for new platform development and ongoing production.

Q: Are there packaging or inventory considerations?

A: Both components are supplied in Tray packaging. Current inventory levels are 1042 pcs for the FN258P-55-34 and 1050 pcs for the FN3288-50-53-C35-R65, indicating adequate stock availability for both options.