Description
Used product. The Schaffner FN3359HV-180-28 is a high-current 3-phase EMC/RFI filter designed to suppress electromagnetic interference in the power lines of industrial equipment, drives, inverters, and power-conversion systems. The photographed model is clearly identified by the marking FN3359HV-180-28.
The nameplate shows 3×690/400 V – 50/60 Hz and 180 A @ 50 °C. Schaffner/TE technical documentation identifies the HV version as a 180 A 3-phase filter, with a 3-wire DELTA + earth configuration, input and output connections via terminals/busbars, and an operating voltage for the series of up to 760 VAC.
⚙️ Technical Specifications
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Brand: Schaffner
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Model: FN3359HV-180-28
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Type: High-current 3-phase EMC/RFI mains filter
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Rated current: 180 A @ 50 °C
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Nameplate voltage: 3×690/400 VAC
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Frequency: 50/60 Hz
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Configuration: 3-phase DELTA, 3 conductors + PE
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Connections: LINE L1-L2-L3-PE, LOAD L1'-L2'-L3'-PE
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Connection type: High-current terminals
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Recommended tightening torque: 15–17 Nm
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Documented operating temperature: −25…+100 °C
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Cooling: Natural convection
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Mounting: Chassis/frame mounting
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Approx. dimensions: 300 × 210 × 120 mm
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Weight: approximately 6 kg
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Component protection rating: IP00
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Flammability rating: UL94 V-0
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Standards/certifications: IEC/EN 60939, UL 1283, CSA, ENEC/cURus
The FN3359HV series documentation also indicates, for this model, a typical drive power rating of up to approximately 132 kW, a typical leakage current of 7.5 mA under standardized conditions, and a power loss of approximately 34 W at 25 °C/50 Hz.
⚡ Function in the Electrical System
The filter is installed in series on the 3-phase line, between the power supply and the connected equipment. Its function is to attenuate high-frequency conducted disturbances, reducing interference generated or propagated by inverters, drives, and power converters toward the electrical network.
It is therefore particularly suitable for applications where improved electromagnetic compatibility (EMC) of the system is required.
🏭 Construction & Installation
The component is constructed with a robust metal housing, side power connections, and a dedicated PE protective-earth connection. The photographs show the six power connections divided between LINE and LOAD, together with the PE connection.
The nameplate explicitly states:
“High leakage current, first connect to earth!”
The PE connection must therefore be made first before connecting the power conductors. The terminals must be tightened according to the specified 15–17 Nm torque.
🌐 Applications
The FN3359HV-180-28 is suitable for high-power industrial systems, particularly:
- 3-phase inverters and converters
- Motor drives
- Industrial power-conversion systems
- High-power electrical switchboards
- Power supplies for high-power equipment
- Systems requiring high levels of EMC compatibility
🛡️ Safety & Product Condition
The filter is used, with cosmetic marks, scratches, and normal installation and handling traces visible on the metal housing. The connections and structure appear visually intact in the photographs, but electrical operation is not declared unless the component has undergone specific testing.
As a component designed for high voltage and high current, it must be installed exclusively by qualified personnel, verifying insulation, PE continuity, terminal tightening, and correct system sizing.
The presence of leakage current requires particular attention to the earth connection. Before any intervention, the filter must be completely disconnected from the power supply and secured.
📦 Package Contents
The sale includes:
- 1 × Schaffner FN3359HV-180-28
- 180 A 3-phase EMC/RFI filter
- Metal housing with power terminals and PE connection
🚀 Final Description
The Schaffner FN3359HV-180-28 is a professional-grade industrial EMC filter designed for high-power 3-phase lines up to 180 A, particularly suitable for inverters, drives, and power-conversion systems where reduction of conducted interference is an important requirement. The HV version is designed for applications involving high voltages, while the metal construction provides a robust solution for cabinet or chassis installation.
