FN258P-30-33 Equivalent & Substitute Parts

Part Overview

The FN258P-30-33 is a three-phase (Delta) EMC/EMI line filter rated for 30 A chassis mount applications with a two-stage 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-30-33

Schaffner EMC Inc.In Stock: 975FN258P-30-33 Datasheet

Current PartRFQ

FN3288-25-33-C35-R65

Schaffner EMC Inc.In Stock: 996FN3288-25-33-C35-R65 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The FN3288-25-33-C35-R65 qualifies as a substitute based on the following alignment of critical electrical and mechanical parameters:

Filter topology and configuration remain consistent: both are three-phase (Delta) EMC/EMI line filters with two-stage design and terminal block termination. Both support chassis mount installation and operate across DC ~ 60Hz frequency ranges, meeting the functional requirements of inverter and power drive system applications.

Current rating differs (25 A vs. 30 A), representing a reduction in maximum current capacity. This substitution is valid only in applications where the actual operating current does not exceed 25 A.

Voltage specifications differ: the substitute operates at 305 V phase-to-ground and 530 V phase-to-phase, compared to the original 277 V and 480 V ratings. The substitute's higher voltage rating provides margin for systems operating at or below the original voltage specifications.

Operating temperature range expands in the substitute (-40°C ~ 100°C vs. -25°C ~ 100°C), providing enhanced low-temperature performance.

Both parts maintain ROHS3 compliance, REACH unaffected status, and identical ECCN/HTSUS classifications, ensuring regulatory consistency.

Parameter Comparison

Engineering Selection Recommendations

The FN3288-25-33-C35-R65 is the designated substitute for the FN258P-30-33 based on functional equivalence and regulatory alignment. Selection of this substitute is appropriate when the following conditions are met:

System operating current does not exceed 25 A. Applications requiring the full 30 A capacity of the original part require alternative solutions.

System voltage specifications operate at or below 277 V phase-to-ground and 480 V phase-to-phase. The substitute's higher voltage rating (305 V / 530 V) accommodates these requirements with margin.

The substitute's active product status and expanded operating temperature range (-40°C ~ 100°C) provide advantages for long-term supply chain continuity and extended environmental performance compared to the original Not For New Designs classification.

Both parts maintain identical regulatory certifications (CSA, ENEC, UR) and compliance status (ROHS3, REACH unaffected), ensuring no additional qualification or documentation requirements.

Frequently Asked Questions (FAQ)

Q: Can the FN3288-25-33-C35-R65 directly replace the FN258P-30-33 in all applications?

A: Direct replacement is valid only when system operating current remains at or below 25 A. The substitute's lower current rating is the primary limiting factor. Voltage and frequency specifications are compatible.

Q: What is the impact of the current rating difference (30 A vs. 25 A)?

A: The substitute supports a maximum continuous current of 25 A. Applications designed for 30 A operation require verification that actual operating current does not exceed this limit. Exceeding 25 A may result in thermal stress and reduced filter performance.

Q: Are the voltage ratings compatible between the two parts?

A: Yes. The substitute's higher voltage ratings (305 V phase-to-ground, 530 V phase-to-phase) exceed the original specifications (277 V, 480 V), providing compatibility with systems operating at the original voltage levels.

Q: Does the substitute offer any performance advantages?

A: The substitute provides an expanded operating temperature range (-40°C to 100°C vs. -25°C to 100°C), enabling operation in colder environments. Active product status ensures ongoing manufacturer support and supply availability.

Q: Are there any compliance or certification differences?

A: Both parts maintain identical regulatory certifications (CSA, ENEC, UR), ROHS3 compliance, and REACH unaffected status. No additional qualification is required for substitution from a regulatory perspective.

Q: What packaging and inventory considerations apply?

A: Both parts are supplied in trays. Current inventory availability should be verified with the supplier, as stock levels may vary.