FN258L-180-40 Equivalent & Substitute Parts

Part Overview

The FN258L-180-40 is a three-phase delta EMC/EMI line filter rated for 180 A with chassis mount configuration and terminal block termination. This component is classified as Not For New Designs, making identification of functionally equivalent alternatives essential for ongoing system maintenance and legacy equipment support. The filter operates across DC to 60 Hz frequency range and is suitable for inverters and power drive systems applications.

Substiute Parts

FN258L-180-40

Schaffner EMC Inc.In Stock: 903FN258L-180-40 Datasheet

Current PartRFQ

FN3359-180-28

Schaffner EMC Inc.In Stock: 703FN3359-180-28 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FN258L-180-40 is determined by the following critical parameters:

• Three-phase delta filter topology
• 180 A current capacity
• Chassis mount form factor
• Operating frequency range DC ~ 60Hz
• Compatible voltage ratings within system specifications
• Regulatory compliance certifications

The FN3359-180-28 qualifies as a substitute based on matching filter type, current rating, frequency range, and mounting configuration. However, differences exist in configuration stage count, voltage ratings, termination style, and regulatory approvals that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The FN3359-180-28 is an active product alternative to the FN258L-180-40. Both components share identical current capacity, frequency operating range, and chassis mount configuration. The FN3359-180-28 provides higher voltage ratings (300 V phase-to-ground and 520 V phase-to-phase versus 277 V and 480 V respectively) and incorporates three-stage filtering versus two-stage, offering enhanced EMI suppression characteristics.

Selection between these parts depends on system voltage specifications and termination requirements. The FN258L-180-40 uses terminal block termination while the FN3359-180-28 uses threaded post (M10) termination, requiring mechanical interface compatibility verification. Regulatory certifications differ: the FN258L-180-40 holds CSA, ENEC, and UR approvals while the FN3359-180-28 holds cURus and ENEC approvals. Confirm that required certifications align with application jurisdiction and equipment standards.

Frequently Asked Questions (FAQ)

Q: Can the FN3359-180-28 directly replace the FN258L-180-40 in existing installations?

A: Direct mechanical replacement requires verification of termination compatibility. The FN258L-180-40 uses terminal block connections while the FN3359-180-28 uses M10 threaded posts. Electrical compatibility exists for systems operating at or below 480 V phase-to-phase, as the FN3359-180-28 is rated for 520 V. Regulatory certification requirements must be confirmed for your application jurisdiction.

Q: What is the significance of the two-stage versus three-stage configuration difference?

A: Configuration stage count reflects the internal filter network complexity. The three-stage design of the FN3359-180-28 provides additional filtering stages compared to the two-stage FN258L-180-40, potentially offering improved attenuation characteristics for specific frequency ranges. Selection should be based on EMI performance requirements of the target application.

Q: Are both parts RoHS compliant?

A: Yes, both the FN258L-180-40 and FN3359-180-28 are ROHS3 compliant and REACH unaffected, meeting current environmental regulatory requirements.

Q: What certifications apply to each part?

A: The FN258L-180-40 carries CSA, ENEC, and UR approvals. The FN3359-180-28 carries cURus and ENEC approvals. Verify that the required certifications for your application and region are present on the selected component.