{"product_id":"schaffner-fn258p-75-34-3-phase-emc-filter-75-a","title":"Schaffner FN258P-75-34 | 3-Phase EMC Filter | 75 A","description":"\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"fbskMG_root markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003e\n\u003cspan role=\"text\"\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/span\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eUsed product.\u003c\/strong\u003e Original \u003cstrong\u003eSchaffner FN258P-75-34\u003c\/strong\u003e industrial filter, designed for \u003cstrong\u003eEMC\/RFI electromagnetic interference suppression\u003c\/strong\u003e on three-phase systems, particularly for \u003cstrong\u003einverters, power converters, and electric drive systems\u003c\/strong\u003e.\u003cbr\u003eThe photographed component is clearly identified by the label as \u003cstrong\u003eFN258P-75-34\u003c\/strong\u003e, \u003cstrong\u003eMade in Hungary\u003c\/strong\u003e, with a nominal voltage of \u003cstrong\u003e3×480\/275 V AC\u003c\/strong\u003e, frequency \u003cstrong\u003e50–60 Hz\u003c\/strong\u003e, and rated current of \u003cstrong\u003e75 A at 50 °C\u003c\/strong\u003e.\u003cbr\u003eThe \u003cstrong\u003eFN258P\u003c\/strong\u003e series consists of \u003cstrong\u003etwo-stage three-phase EMC\/RFI filters\u003c\/strong\u003e, developed for applications with inverters and Power Drive Systems. The \u003cstrong\u003e-34\u003c\/strong\u003e version uses \u003cstrong\u003epower terminals\u003c\/strong\u003e, and the chassis construction allows installation directly inside a cabinet or equipment.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e⚙️ \u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e \u003cstrong\u003eSchaffner\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003eFN258P-75-34\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e \u003cstrong\u003eFN258P\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e \u003cstrong\u003ethree-phase EMC\/RFI filter\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e \u003cstrong\u003e3-phase \/ Delta\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnology:\u003c\/strong\u003e \u003cstrong\u003e2-stage filter\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal voltage:\u003c\/strong\u003e \u003cstrong\u003e3×480\/275 V AC\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e \u003cstrong\u003e50–60 Hz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated current:\u003c\/strong\u003e \u003cstrong\u003e75 A @ 50 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndicative maximum thermal current:\u003c\/strong\u003e approx. \u003cstrong\u003e82 A @ 40 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical drive power:\u003c\/strong\u003e approx. \u003cstrong\u003e37 kW\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical leakage current:\u003c\/strong\u003e approx. \u003cstrong\u003e0.4 mA\u003c\/strong\u003e for the FN258P version\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower loss:\u003c\/strong\u003e approx. \u003cstrong\u003e24 W\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e \u003cstrong\u003echassis mounting\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e \u003cstrong\u003eterminal block\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e \u003cstrong\u003e−25…+100 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental category:\u003c\/strong\u003e \u003cstrong\u003e25\/100\/21\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisible code\/batch:\u003c\/strong\u003e \u003cstrong\u003e10 39 R\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduction:\u003c\/strong\u003e \u003cstrong\u003eMade in Hungary\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\/approvals:\u003c\/strong\u003e \u003cstrong\u003eENEC, UL, CSA\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarth connection:\u003c\/strong\u003e present, with \u003cstrong\u003ePE braid\u003c\/strong\u003e visible in the photographs.\u003cbr\u003eSchaffner documentation confirms for the \u003cstrong\u003eFN258P-75-34\u003c\/strong\u003e a current rating of \u003cstrong\u003e75 A\u003c\/strong\u003e, typical drive power of \u003cstrong\u003e37 kW\u003c\/strong\u003e, power loss of approximately \u003cstrong\u003e24 W\u003c\/strong\u003e, and weight of approximately \u003cstrong\u003e3.9 kg\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e⚡ \u003cstrong\u003eFunction in the Electrical System\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSchaffner FN258P-75-34\u003c\/strong\u003e is installed on the three-phase power line to \u003cstrong\u003eattenuate high-frequency interference\u003c\/strong\u003e mainly produced by power electronic stages.\u003cbr\u003eInverters and converters use fast-switching devices that can generate conducted interference toward the grid. The filter reduces the propagation of these disturbances, contributing to compliance with \u003cstrong\u003eelectromagnetic compatibility (EMC)\u003c\/strong\u003e requirements.\u003cbr\u003eThe FN258 series uses a \u003cstrong\u003emulti-stage structure\u003c\/strong\u003e to achieve high EMI\/RFI attenuation and is specifically intended for \u003cstrong\u003einverters and power drive systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e🔌 \u003cstrong\u003eConnections and Installation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe filter has three power lines:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eL1\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eL2\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eL3\u003c\/strong\u003e\u003cbr\u003eThe photograph clearly shows the \u003cstrong\u003eLINE\u003c\/strong\u003e marking on the terminals and the \u003cstrong\u003ePE\u003c\/strong\u003e connection braid.\u003cbr\u003eThe label also states the tightening specification \u003cstrong\u003e“RECOMMENDED TORQUE 4.0–4.5 Nm”\u003c\/strong\u003e, which must be respected for the power connections.\u003cbr\u003eThe filter must be connected strictly according to the manufacturer's specified diagram and with correct identification of the \u003cstrong\u003eLINE\/LOAD\u003c\/strong\u003e terminals. Incorrect connection may compromise filter effectiveness and create hazardous electrical conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e☀️ \u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eFN258P-75-34\u003c\/strong\u003e is particularly suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ephotovoltaic inverters\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003eindustrial inverters;\u003c\/li\u003e\n\u003cli\u003efrequency converters;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Drive Systems\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003emotor drives;\u003c\/li\u003e\n\u003cli\u003epower electronic equipment;\u003c\/li\u003e\n\u003cli\u003eindustrial electrical panels;\u003c\/li\u003e\n\u003cli\u003ethree-phase systems requiring EMC\/RFI interference reduction.\u003cbr\u003eSchaffner documentation explicitly identifies the FN258 series as an EMC solution for \u003cstrong\u003einverters and Power Drive Systems\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e🔧 \u003cstrong\u003eFaults, Errors and Symptoms\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eA deteriorated or damaged EMC filter may exhibit:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eincreased \u003cstrong\u003eelectromagnetic interference\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003econducted disturbances on the power network;\u003c\/li\u003e\n\u003cli\u003eEMC compatibility problems;\u003c\/li\u003e\n\u003cli\u003enoise or interference on nearby electronic equipment;\u003c\/li\u003e\n\u003cli\u003eabnormal heating of the terminals;\u003c\/li\u003e\n\u003cli\u003eabnormal voltage drop;\u003c\/li\u003e\n\u003cli\u003edamage to internal components;\u003c\/li\u003e\n\u003cli\u003eabnormalities caused by \u003cstrong\u003eloose, oxidized, or overheated connections\u003c\/strong\u003e.\u003cbr\u003eHowever, an inverter fault must not automatically be attributed to the filter: the \u003cstrong\u003egrid, wiring, inverter, motor\/converter, and grounding system\u003c\/strong\u003e must also be checked.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e🛠️ \u003cstrong\u003eInspection and Verification\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eFor professional verification of the \u003cstrong\u003eFN258P-75-34\u003c\/strong\u003e, it is advisable to check:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eenclosure integrity;\u003c\/li\u003e\n\u003cli\u003econdition of the \u003cstrong\u003eL1\/L2\/L3\u003c\/strong\u003e terminals;\u003c\/li\u003e\n\u003cli\u003econdition of the \u003cstrong\u003ePE\u003c\/strong\u003e braid;\u003c\/li\u003e\n\u003cli\u003econnection tightness;\u003c\/li\u003e\n\u003cli\u003epossible oxidation;\u003c\/li\u003e\n\u003cli\u003esigns of overheating;\u003c\/li\u003e\n\u003cli\u003econtinuity of the electrical paths;\u003c\/li\u003e\n\u003cli\u003einsulation to earth;\u003c\/li\u003e\n\u003cli\u003eany abnormal voltage drop;\u003c\/li\u003e\n\u003cli\u003efilter behavior during a controlled test.\u003cbr\u003eThe filter should not be checked only by means of a continuity test: \u003cstrong\u003einsulation, connections, and electrical behavior under appropriate operating conditions\u003c\/strong\u003e must also be evaluated.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e🏭 \u003cstrong\u003eConstruction and Product Condition\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe photographed component is \u003cstrong\u003eused\u003c\/strong\u003e and shows normal signs of previous installation and handling, with \u003cstrong\u003escratches and slight superficial traces of use\u003c\/strong\u003e on the metal enclosure.\u003cbr\u003eThe structure appears intact in the photographs. The \u003cstrong\u003ethree power terminals\u003c\/strong\u003e, \u003cstrong\u003ePE braid\u003c\/strong\u003e, and chassis mounting system are present.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e🌐 \u003cstrong\u003eCompatibility and Replacement\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eFN258P-75-34\u003c\/strong\u003e is a specific component of the Schaffner FN258 series. For correct replacement, at least the following must be verified:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e75 A rated current\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3×480\/275 V AC\u003c\/strong\u003e;\u003c\/li\u003e\n\u003cli\u003ethree-phase configuration;\u003c\/li\u003e\n\u003cli\u003enumber of stages;\u003c\/li\u003e\n\u003cli\u003emechanical dimensions;\u003c\/li\u003e\n\u003cli\u003eterminal arrangement;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePE\u003c\/strong\u003e connection;\u003c\/li\u003e\n\u003cli\u003eEMC characteristics required by the equipment.\u003cbr\u003eThe \u003cstrong\u003eFN258P-75-34 is currently considered obsolete\/discontinued\u003c\/strong\u003e by some distributors; replacement components from the newer \u003cstrong\u003eFN3288\u003c\/strong\u003e family are available, but they must not automatically be considered equivalent without verifying the application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e🛡️ \u003cstrong\u003eSafety\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe filter operates on a three-phase network up to \u003cstrong\u003e480 V AC\u003c\/strong\u003e and with a rated current of \u003cstrong\u003e75 A\u003c\/strong\u003e.\u003cbr\u003eInstallation, disconnection, and testing must only be carried out by \u003cstrong\u003equalified personnel\u003c\/strong\u003e, with the equipment completely disconnected from the power supply and secured.\u003cbr\u003eParticular attention must be paid to the \u003cstrong\u003ePE\u003c\/strong\u003e connection, correct phase sequence, and terminal tightening according to the manufacturer's specified torque of \u003cstrong\u003e4.0–4.5 Nm\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e📦 \u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1 × Schaffner FN258P-75-34 three-phase EMC\/RFI filter\u003c\/strong\u003e, \u003cstrong\u003e3×480\/275 V AC – 75 A @50 °C\u003c\/strong\u003e, with power terminals and PE connection, as shown in the photographs.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e🚀 \u003cstrong\u003eFinal Description\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSchaffner FN258P-75-34\u003c\/strong\u003e is a \u003cstrong\u003e75 A two-stage three-phase EMC\/RFI filter\u003c\/strong\u003e, designed to reduce electromagnetic interference in \u003cstrong\u003einverters, converters, and industrial drive systems\u003c\/strong\u003e.\u003cbr\u003eThe component operates at \u003cstrong\u003e3×480\/275 V AC, 50–60 Hz\u003c\/strong\u003e, with a rated current of \u003cstrong\u003e75 A at 50 °C\u003c\/strong\u003e, typical drive power of approximately \u003cstrong\u003e37 kW\u003c\/strong\u003e, dimensions of approximately \u003cstrong\u003e329 × 80 × 220 mm\u003c\/strong\u003e, and weight of approximately \u003cstrong\u003e3.9 kg\u003c\/strong\u003e.\u003cbr\u003eThe photographed code \u003cstrong\u003eFN258P-75-34\u003c\/strong\u003e is clearly legible and identifies a professional version of the FN258P series, now \u003cstrong\u003eobsolete\u003c\/strong\u003e, making it particularly interesting as an \u003cstrong\u003eoriginal replacement for industrial equipment and inverters still in service\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Schaffner Filter","offers":[{"title":"Default Title","offer_id":54711556571469,"sku":null,"price":120.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0802\/3274\/3245\/files\/MG_6758.jpg?v=1789137939","url":"https:\/\/greenenergy-repair.com\/de\/products\/schaffner-fn258p-75-34-3-phase-emc-filter-75-a","provider":"Green Energy","version":"1.0","type":"link"}