FN258L-7-07 Equivalent & Substitute Parts

Part Overview

The FN258L-7-07 is a three-phase delta EMC/EMI line filter manufactured by Schaffner EMC Inc., rated for 7 A operation across DC to 60 Hz frequency range. This chassis-mount filter features a two-stage terminal block configuration and is designed for inverters and power drive systems. The part is currently obsolete, necessitating identification of functionally equivalent substitute components that maintain compatibility with existing system requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	FN258L-7-07
Manufacturer	Schaffner EMC Inc.
Series	FN 258
Filter Type	Three Phase (Delta)
Configuration	Two Stage
Current Rating	7 A
Voltage - Phase to Ground/Neutral	277 V
Voltage - Phase to Phase	480 V
Frequency - Operating	DC ~ 60Hz
Mounting Type	Chassis Mount
Termination Style	Terminal Block
Operating Temperature	-25°C ~ 100°C
Approval Agencies	CSA, ENEC, UR
RoHS Status	ROHS3 Compliant
Part Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the FN258L-7-07 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Filter Type: Three Phase (Delta) configuration
Configuration: Two Stage topology
Mounting Type: Chassis Mount
Termination Style: Terminal Block
Frequency Range: DC ~ 60Hz operation
Applications: Inverters, Power Drive Systems

Electrical Compatibility Criteria:

Current Rating: Substitute must equal or exceed 7 A
Voltage Rating (Phase to Phase): Substitute must accommodate 480 V or higher
Voltage Rating (Phase to Ground/Neutral): Substitute must accommodate 277 V or higher

The identified substitute parts FN3288-10-44-C17-R65 and FN3288-10-44-C34-R65 satisfy all mandatory criteria and exceed electrical ratings, providing enhanced current capacity (10 A) and higher voltage specifications (530 V phase-to-phase, 305 V phase-to-ground).

Parameter Comparison

Parameter	FN258L-7-07 (Main Part)	FN3288-10-44-C17-R65 (Substitute)	FN3288-10-44-C34-R65 (Substitute)
Manufacturer	Schaffner EMC Inc.	Schaffner EMC Inc.	Schaffner EMC Inc.
Filter Type	Three Phase (Delta)	Three Phase (Delta)	Three Phase (Delta)
Configuration	Two Stage	Two Stage	Two Stage
Current Rating	7 A	10 A	10 A
Voltage - Phase to Ground/Neutral	277 V	305 V	305 V
Voltage - Phase to Phase	480 V	530 V	530 V
Frequency - Operating	DC ~ 60Hz	DC ~ 60Hz	DC ~ 60Hz
Mounting Type	Chassis Mount	Chassis Mount	Chassis Mount
Termination Style	Terminal Block	Terminal Block	Terminal Block
Operating Temperature	-25°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C
Applications	Inverters, Power Drive Systems	Inverters, Power Drive Systems	Inverters, Power Drive Systems
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Part Status	Obsolete	Active	Active
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99

Engineering Selection Recommendations

Both FN3288-10-44-C17-R65 and FN3288-10-44-C34-R65 are active production components from Schaffner EMC Inc. and serve as direct functional equivalents to the obsolete FN258L-7-07. Selection between these two substitute parts should be based on specific application requirements and packaging preferences, as both maintain identical electrical specifications and certifications.

Compliance and Certification Status:

FN3288-10-44-C17-R65: CE, ENEC, UR approvals
FN3288-10-44-C34-R65: ENEC, UR approvals (CE approval not listed)

Both substitute parts exceed the original specifications in current capacity (10 A versus 7 A) and voltage ratings (530 V phase-to-phase versus 480 V), ensuring backward compatibility with systems designed for the FN258L-7-07. The extended operating temperature range (-40°C to 100°C versus -25°C to 100°C) provides enhanced environmental performance.

Frequently Asked Questions (FAQ)

Q: Can FN3288-10-44-C17-R65 or FN3288-10-44-C34-R65 directly replace FN258L-7-07 in existing installations?

A: Yes. Both substitute parts maintain identical filter topology (three-phase delta, two-stage), mounting configuration (chassis mount), and termination style (terminal block). Electrical specifications of the substitutes exceed the original part requirements, ensuring full compatibility.

Q: What is the difference between FN3288-10-44-C17-R65 and FN3288-10-44-C34-R65?

A: Both parts share identical electrical specifications and performance characteristics. The difference lies in certification scope: FN3288-10-44-C17-R65 includes CE approval, while FN3288-10-44-C34-R65 does not list CE approval. Selection depends on regional regulatory requirements.

Q: Are the substitute parts rated for the same voltage as the original FN258L-7-07?

A: The substitute parts exceed the original voltage ratings. FN258L-7-07 is rated 480 V phase-to-phase and 277 V phase-to-ground. FN3288-10-44-C17-R65 and FN3288-10-44-C34-R65 are rated 530 V phase-to-phase and 305 V phase-to-ground, providing higher voltage margin.

Q: What is the current capacity difference?

A: FN258L-7-07 is rated 7 A, while both substitute parts are rated 10 A. This increased capacity provides additional design margin for power drive systems and inverter applications.

Q: Are RoHS and REACH compliance maintained with the substitute parts?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected, maintaining environmental and regulatory compliance.

Q: What packaging format is used for the substitute parts?

A: FN3288-10-44-C17-R65 and FN3288-10-44-C34-R65 are supplied in Box packaging, compared to Tray packaging for the original FN258L-7-07.

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