Description

Used product. Schaffner FN2200B-75-34 EMC/RFI filter, designed for DC applications, particularly for photovoltaic inverters. The filter is installed between PV-Field and Inverter to attenuate high-frequency conducted disturbances and limit the propagation of electromagnetic interference along the DC circuit.

⚙️ Technical Specifications

• Brand: Schaffner
• Model: FN2200B-75-34
• Type: single-stage DC EMC/RFI filter
• Maximum voltage: 1200 VDC
• Rated current: 75 A @ 55°C
• Climatic category: 40/100/21
• Connection: power terminals
• Mounting: panel/chassis mounting
• Cooling: natural convection
• Dimensions: approx. 200 × 95 × 80 mm
• Protection: IP20
• Operating temperature: −40…+100°C
• Overvoltage category: II
• Pollution Degree: PD2
• Standards: IEC/EN 60939, UL 1283, CSA 22.2.

⚡ Function in the Photovoltaic System

The filter is installed on the DC line between the photovoltaic field and inverter, respecting the + / − polarity indicated on the component.
The FN2200 series was specifically developed for photovoltaic inverters: in addition to reducing conducted emissions, the filter helps limit HF currents and disturbances that may propagate toward the photovoltaic modules.

🔌 Connections

The two directions are clearly indicated on the component:
PV-FIELD → INVERTER
with:

• +
• −
• PE
  The -34 version uses input and output terminals.

🏭 Construction and Condition

Robust metal enclosure for chassis mounting, with power terminals and PE connection.
The photographed component is used, with normal signs of previous installation, small scratches, and slight abrasions on the enclosure and terminals.

🌐 Applications

Primarily suitable for:

• photovoltaic inverters
• industrial PV systems
• high-voltage DC circuits
• DC conversion and drive systems
• reduction of EMC/RFI interference on DC lines.

🛡️ Safety

⚠️ The filter is rated for 1200 VDC and 75 A: extremely dangerous electrical levels. Before any intervention, it is essential to completely disconnect the circuit, verify the absence of voltage, and follow the procedures required for high-voltage DC systems.

📦 Package Contents

• 1 × Schaffner FN2200B-75-34
• complete filter as shown in the photographs.

🚀 Final Description

The Schaffner FN2200B-75-34 is a 1200 VDC / 75 A single-stage DC EMC/RFI filter, specifically suitable for PV-Field/Inverter applications. The photographed version features input/output terminals, a metal enclosure, and a PE connection. Official Schaffner documentation confirms 75 A, 1200 VDC, IP20, and operation from −40 to +100°C.