FN258-250-07 Equivalent & Substitute Parts

Part Overview

The FN258-250-07 is a three-phase delta EMC/EMI line filter rated for 250 A with two-stage configuration and terminal block termination. This component is classified as not for new designs, making identification of suitable alternatives essential for ongoing system maintenance and new project implementations. The filter is designed for inverters and power drive systems operating across DC to 60 Hz frequency range.

Substiute Parts

FN258-250-07

Schaffner EMC Inc.In Stock: 1166FN258-250-07 Datasheet

Current PartRFQ

FN3359-250-28

Schaffner EMC Inc.In Stock: 1157FN3359-250-28 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FN258-250-07 is determined by the following critical parameters:

• Filter Type: Three Phase (Delta) configuration
• Current Rating: 250 A
• Frequency Range: DC ~ 60Hz operation
• Mounting Type: Chassis Mount
• Operating Temperature Range: -25°C ~ 100°C
• Regulatory Compliance: CSA, ENEC, or UR certification

The FN3359-250-28 qualifies as a substitute based on matching filter type, current rating, frequency range, mounting type, and operating temperature. However, differences exist in configuration (three stage vs. two stage), voltage ratings, termination style, and regulatory certifications that must be evaluated for specific applications.

Parameter Comparison

Engineering Selection Recommendations

The FN3359-250-28 is an active product substitute for the FN258-250-07. Key considerations for selection:

The FN3359-250-28 provides higher voltage ratings (300 V phase-to-ground and 520 V phase-to-phase versus 277 V and 480 V respectively), offering greater margin in higher-voltage applications. The three-stage configuration provides enhanced filtering compared to the two-stage design of the FN258-250-07.

Termination style differs between the parts: the FN258-250-07 uses terminal block connections while the FN3359-250-28 uses threaded post (M10) termination. This requires mechanical and electrical interface redesign in the host system.

Regulatory certifications differ: the FN258-250-07 holds CSA, ENEC, and UR approvals, while the FN3359-250-28 holds cURus and ENEC approvals. System compliance requirements must be verified against the specific certifications needed for the target application.

The FN3359-250-28 active product status makes it suitable for new designs, whereas the FN258-250-07 is restricted from new design implementation.

Frequently Asked Questions (FAQ)

Q: Can the FN3359-250-28 directly replace the FN258-250-07 in existing systems?

A: Direct replacement requires mechanical and electrical interface modification. The termination style differs (terminal block versus threaded post M10), necessitating connector and mounting redesign. Electrical compatibility exists for the 250 A current rating and operating frequency range.

Q: What are the voltage rating differences between these parts?

A: The FN258-250-07 is rated 277 V phase-to-ground and 480 V phase-to-phase. The FN3359-250-28 is rated 300 V phase-to-ground and 520 V phase-to-phase. The substitute provides higher voltage margin and is suitable for applications requiring the higher ratings.

Q: How do the filter configurations differ?

A: The FN258-250-07 uses two-stage filtering while the FN3359-250-28 uses three-stage filtering. The three-stage design provides additional attenuation of EMI/EMC noise.

Q: Are both parts RoHS and REACH compliant?

A: Both parts are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.

Q: What regulatory certifications apply to each part?

A: The FN258-250-07 holds CSA, ENEC, and UR certifications. The FN3359-250-28 holds cURus and ENEC certifications. System compliance requirements must be verified against the specific certifications needed for the target application and region.

Q: Why is the FN258-250-07 marked as not for new designs?

A: The FN258-250-07 is in end-of-life status. The FN3359-250-28 is the active product offering from Schaffner EMC Inc. for new design implementations requiring 250 A three-phase delta line filtering.