Description

Used product. Schaffner FN3270H-35-33 three-phase EMC/RFI filter, designed to reduce electromagnetic interference in industrial equipment, inverters, drives, and conversion systems. The filter is a single-stage Delta three-phase type, with LINE/LOAD L1-L2-L3 connections and grounding.

⚙️ Technical Specifications

• Brand: Schaffner
• Model: FN3270H-35-33
• Type: three-phase EMC/RFI filter
• Voltage: 3 × 520/300 VAC
• Frequency: 50–60 Hz
• Rated current: 35 A @ 50°C
• Configuration: Delta, 3 wires + earth
• Stages: 1
• Mounting: chassis/panel
• Connections: screw terminals
• Leakage current: approx. 3.4 mA
• Operating temperature: −25…+100°C
• Recommended torque: 1.5–1.8 Nm
• Climatic category: 25/100/21
• Visible approvals: ENEC, UL, CSA
• Made in Thailand
  The data are consistent with the Schaffner technical datasheet: the FN3270H-35-33 is classified as a 35 A, 520 VAC three-phase filter, with input/output terminals and applications for inverters and Power Drive Systems.

⚡ Function

The filter is installed between LINE and LOAD and is used to attenuate high-frequency conducted interference, reducing interference generated by power electronic equipment and limiting its propagation toward the mains.

🔌 Connections

The following are clearly identified:
LINE: L1 – L2 – L3
LOAD: L1' – L2' – L3'
PE: earth connection.
The component also carries the warning “HIGH LEAKAGE CURRENT – first connect to earth!”: the earth connection must therefore be made before the power conductors.

🏭 Product Condition

Used filter, with normal signs of previous installation, small scratches and abrasions on the metal enclosure and terminals. The structure appears intact.

🌐 Applications

Suitable for inverters, motor drives, frequency converters, Power Drive Systems, and industrial equipment where EMC/RFI interference reduction is required.

🛡️ Safety

⚠️ Component for a three-phase network up to 520 VAC and 35 A. Installation must be carried out by qualified personnel, respecting the PE → L1/L2/L3 sequence indicated by the manufacturer and the 1.5–1.8 Nm tightening torque.

📦 Package Contents

• 1 × Schaffner FN3270H-35-33
• complete filter as shown in the photographs.

🚀 Final Description

The Schaffner FN3270H-35-33 is a 35 A three-phase EMC/RFI filter, with nominal voltage of 3 × 520/300 VAC 50–60 Hz, single-stage Delta configuration, L1-L2-L3 / L1'-L2'-L3' connections, and PE. It is a professional component for inverters and industrial power systems, with compact construction and screw terminals. The technical documentation confirms 35 A, 520 VAC, 3.4 mA leakage current, and −25…+100°C.