FN258P-7-29 Equivalent & Substitute Parts

Part Overview

The FN258P-7-29 is a three-phase (Delta) EMC/EMI line filter rated for 7 A with chassis mount configuration and terminal block termination. This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product portfolio. Organizations currently using this part in active systems or requiring replacement units for maintenance and repair operations must identify functionally equivalent alternatives that maintain compatibility with existing installations while meeting current electrical and regulatory standards.

Substiute Parts

FN258P-7-29

Schaffner EMC Inc.In Stock: 730FN258P-7-29 Datasheet

Current PartRFQ

FN3288-10-44-C34-R65

Schaffner EMC Inc.In Stock: 1059FN3288-10-44-C34-R65 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FN258P-7-29 is determined by the following critical parameters that must be maintained or exceeded:

• Filter Type: Three Phase (Delta) configuration is mandatory for direct substitution
• Configuration: Two Stage topology must be preserved
• Mounting Type: Chassis Mount interface is required
• Termination Style: Terminal Block connection is required
• Frequency Range: DC ~ 60Hz operating range must be supported
• Voltage Ratings: Phase-to-ground and phase-to-phase voltage ratings must meet or exceed the original specification
• Current Rating: Substitute current capacity must equal or exceed 7 A
• Regulatory Compliance: RoHS3 compliance and approval agencies (CSA, ENEC, UR) ensure compatibility with existing certification requirements

The FN3288-10-44-C34-R65 satisfies all substitution criteria through matching filter topology, configuration, mounting, termination, frequency range, and regulatory compliance while providing enhanced current capacity and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The FN3288-10-44-C34-R65 is the designated substitute for the FN258P-7-29 based on functional equivalence and regulatory compliance. The substitute part maintains identical filter topology, configuration, mounting interface, and termination style while providing increased current capacity (10 A versus 7 A) and higher voltage ratings (530 V phase-to-phase and 305 V phase-to-ground versus 480 V and 277 V respectively). The extended operating temperature range (-40°C to 100°C) provides additional thermal margin compared to the original part (-25°C to 100°C).

Both parts are ROHS3 compliant and manufactured by Schaffner EMC Inc., ensuring consistency in design philosophy and quality standards. The transition from Not For New Designs status to Active product status for the substitute part indicates ongoing manufacturer support and availability for future procurement cycles.

Frequently Asked Questions (FAQ)

Q: Can the FN3288-10-44-C34-R65 be used as a direct replacement for the FN258P-7-29 in existing installations?

A: Yes. Both parts share identical three-phase (Delta) filter topology, two-stage configuration, chassis mount interface, and terminal block termination. The substitute part's higher current and voltage ratings are compatible with systems designed for the original part.

Q: What are the key differences between these two parts?

A: The FN3288-10-44-C34-R65 provides higher current capacity (10 A versus 7 A), higher voltage ratings (530 V phase-to-phase and 305 V phase-to-ground versus 480 V and 277 V), and an extended low-temperature operating limit (-40°C versus -25°C). The substitute part carries Active product status compared to the original part's Not For New Designs classification.

Q: Are there packaging differences between these parts?

A: Yes. The FN258P-7-29 is supplied in Tray packaging, while the FN3288-10-44-C34-R65 is supplied in Box packaging. This difference affects storage, handling, and logistics but does not impact functional performance or electrical characteristics.

Q: Do both parts meet the same regulatory requirements?

A: Both parts are ROHS3 compliant and REACH unaffected. The original part carries CSA, ENEC, and UR approvals. Approval agency information for the substitute part was not provided in the technical data.

Q: What applications are these filters designed for?

A: Both parts are specified for Inverters and Power Drive Systems applications, supporting DC to 60 Hz operating frequencies in three-phase power distribution environments.