{"id":131,"date":"2015-03-10T10:01:24","date_gmt":"2015-03-10T10:01:24","guid":{"rendered":"https:\/\/epa.de\/filter\/en\/?page_id=131"},"modified":"2026-05-11T15:30:42","modified_gmt":"2026-05-11T13:30:42","slug":"leakage-current-reduction-filters","status":"publish","type":"page","link":"https:\/\/epa.de\/en\/lc\/products\/leakage-current-reduction-filters\/","title":{"rendered":"Leakage Current Reduction Filters"},"content":{"rendered":"\n<p class=\"has-medium-font-size wp-block-paragraph\">Reduction of high frequent leakage currents from 2 up to 16 kHz with our leakage current reduction filters NF-DAR or combined RFI filters NF-KC-DAR<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Plant operators or manufacturers required to use a residual current device (RCD, RCCB) for personal or fire protection are well aware of the challenges posed by high leakage currents caused by inverters or servo drives.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The leakage currents are often so high that unwanted shutdowns of the residual current device at one or two frequency inverters can happen. This may have several causes:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">An EMC filter integrated in the frequency inverters or an external EMC filter can be a reason (leakage currents with frequency &lt; 1 kHz).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Long, shielded motor cables can be another reason (leakage currents with frequency &gt; 1 kHz). Visualizing can be very easy with the help of Leakage Current Analysis System EPA LEAKWATCH (more information under <a href=\"https:\/\/leakwatch.de\">www.leakwatch.de<\/a>).<\/p>\n\n\n\n<div style=\"height:var(--wp--preset--spacing--50)\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list mb-0\">\n<li><strong><strong>Voltage range<\/strong>:<\/strong> 400 V AC bis 690 V AC, 50\/60 Hz<\/li>\n\n\n\n<li><strong><strong>Rated current<\/strong>:<\/strong> 10 A bis 800 A<\/li>\n\n\n\n<li>Three-phase, with Neutral<\/li>\n<\/ul>\n\n\n\n<div style=\"height:var(--wp--preset--spacing--70)\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading alignfull has-text-align-center has-white-color has-primary-darker-15-to-primary-darker-30-gradient-background has-text-color has-background has-link-color wp-elements-0bb18d77dc4025b0969be2a7d1888f78\">Three-Phase<\/h2>\n\n\n\n<div style=\"height:var(--wp--preset--spacing--70)\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<h1><\/h1>\n<div class=\"wp-block-epa-am-epa-produkte\">\n    <div class=\"epa-block-products\" id=\"NF-DAR-3\">\n        <div class=\"card border-0 rounded-0\">\n            <div class=\"card-body\">\n\n                <div class=\"row g-0\">\n                    <div class=\"col-md-4\"><img decoding=\"async\" src=\"https:\/\/epa.de\/en\/wp-content\/uploads\/sites\/2\/2025\/05\/product_NF-DAR-125-3-1024x768.jpg\" class=\"fluid img-thumbnail border border-primary rounded-0\" alt=\"Produktbild NF-DAR-3\"><\/div>                    <div class=\"col-md-8\">\n                        <div class=\"card-body\">\n                            <div class=\"product-sharing-options ps-2 pe-2 position-absolute top-0 end-0 m-2 bg-white rounded\">\n                                <a href=\"mailto:?subject=Sehen%20Sie%20sich%20NF-DAR-3%20auf%20epa.de%20an%21&#038;body=Hier%20der%20Link%3A%20https%3A%2F%2Fepa.de%2Fen%2Flc%2Fproducts%2Fleakage-current-reduction-filters%2F%23NF-DAR-3\" target=\"blank\" class=\"me-2\"><i class=\"bi bi-envelope\"><\/i><\/a>\n                                <a href=\".\/#NF-DAR-3\" target=\"blank\"><i class=\"bi bi-link-45deg\"><\/i><\/a>\n                            <\/div>\n\n                            <h3 class=\"card-title\">NF-DAR-3<\/h3>\n                            <p><p>Leakage Current Reduction Filter<\/p><\/p>\n                            <ul class=\"list-group list-group-flush\"><li class=\"list-group-item\">Especially for systems with RCCB 30 mA \/ 300 mA<\/li><li class='list-group-item'>To suppress undesirable leakage currents \u2265 2kHz<\/li><li class='list-group-item'>Supports the effect of existing EMC filter<\/li><li class='list-group-item'>Suitable for frequency inverters and servo drives with long motor cable<\/li><li class='list-group-item'>Without Y capacitor (no leakage current)<\/li><li class='list-group-item'>Fingerproof terminals<\/li><li class='list-group-item'>Current rating 10 A \u2013 800 A<\/li><\/ul>                        <\/div>\n\n                        <!-- <div class=\"product-offset-border\"><\/div> -->\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n\n    <!-- Modal -->\n    <div class=\"modal modal-xl fade\" id=\"modal2006915581\" tabindex=\"-1\" role=\"dialog\" aria-labelledby=\"exampleModalLongTitle\" aria-hidden=\"true\">\n        <div class=\"modal-dialog\" role=\"document\">\n            <div class=\"modal-content\">\n                <div class=\"modal-header\">\n                    <h3 class=\"modal-title\" id=\"exampleModalLongTitle\">\n                        Request for NF-DAR-3                    <\/h3>\n                    <button type=\"button\" class=\"btn-close\" data-bs-dismiss=\"modal\" 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C1 \/ C2<\/li><li class='list-group-item'>Suitable for frequency inverters and servo drives with long motor cable<\/li><li class='list-group-item'>High saturation resistance<\/li><li class='list-group-item'>Low leakage current<\/li><li class='list-group-item'>Fingerproof terminals<\/li><li class='list-group-item'>Current rating 16 A \u2013 800 A<\/li><\/ul>                        <\/div>\n\n                        <!-- <div class=\"product-offset-border\"><\/div> -->\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n\n    <!-- Modal -->\n    <div class=\"modal modal-xl fade\" id=\"modal254366677\" tabindex=\"-1\" role=\"dialog\" aria-labelledby=\"exampleModalLongTitle\" aria-hidden=\"true\">\n        <div class=\"modal-dialog\" role=\"document\">\n            <div class=\"modal-content\">\n                <div class=\"modal-header\">\n                    <h3 class=\"modal-title\" id=\"exampleModalLongTitle\">\n                     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wpforms-field-select wpforms-field-select-style-classic\" data-field-id=\"6\"><label class=\"wpforms-field-label\" for=\"wpforms-5846-field_6\">Are you already a customer of ours? <span class=\"wpforms-required-label\" aria-hidden=\"true\">*<\/span><\/label><select id=\"wpforms-5846-field_6\" class=\"wpforms-field-large wpforms-field-required\" name=\"wpforms[fields][6]\" required=\"required\"><option value=\"\" class=\"placeholder\" disabled  selected='selected'>Please choose \u2026<\/option><option value=\"Yes\"  class=\"choice-1 depth-1\"  >Yes<\/option><option value=\"No\"  class=\"choice-2 depth-1\"  >No<\/option><\/select><\/div><div id=\"wpforms-5846-field_11-container\" class=\"wpforms-field wpforms-field-text\" data-field-id=\"11\"><label class=\"wpforms-field-label\" for=\"wpforms-5846-field_11\">Product <span class=\"wpforms-required-label\" aria-hidden=\"true\">*<\/span><\/label><input type=\"text\" id=\"wpforms-5846-field_11\" class=\"wpforms-field-large 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class=\"wpforms-submit\" data-alt-text=\"Sending\u2026\" data-submit-text=\"Submit\" aria-live=\"assertive\" value=\"wpforms-submit\">Submit<\/button><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/epa.de\/en\/wp-content\/plugins\/wpforms-lite\/assets\/images\/submit-spin.svg\" class=\"wpforms-submit-spinner\" style=\"display: none;\" width=\"26\" height=\"26\" alt=\"Loading\"><\/div><\/form><\/div>  <!-- .wpforms-container -->                <\/div>\n                <div class=\"modal-footer\">\n                    <button type=\"button\" class=\"btn btn-secondary\" data-bs-dismiss=\"modal\"><i class=\"bi bi-x-lg\"><\/i> Close<\/button>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n\n    <script type=\"text\/javascript\">\n        function setProductName2modalForm254366677() {\n            var modalRandProductID = 'modal254366677';\n            var productName = 'NF-KC-DAR-3';\n\n            \/\/ search for modalRandProductID\n            var modal = document.getElementById(modalRandProductID);\n\n            if (modal) {\n                \/\/ search for the field to populate\n                var field = modal.querySelector('#wpforms-5846-field_11');\n\n                if (field) {\n                    \/\/ populate field\n                    field.value = productName;\n                } else {\n                    console.error('No form selected.');\n                }\n            } else {\n                console.error('Modal not found: ' + modalRandProductID);\n            }\n        };\n    <\/script>\n\n    <div class=\"d-flex flex-row mt-2 mb-5\">\n        <button class=\"btn btn-primary w-50 me-1\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#collapse254366677\" aria-expanded=\"false\" aria-controls=\"collapse254366677\"><i class=\"bi bi-cloud-arrow-down-fill\"><\/i> Downloads for the product<\/button>\n        <button type=\"button\" class=\"btn btn-primary w-50 ms-1\" data-bs-toggle=\"modal\" data-bs-target=\"#modal254366677\" onclick=\"setProductName2modalForm254366677()\"><i class=\"bi bi-question-circle-fill\"><\/i> Request product<\/button>\n    <\/div>\n\n    <div class=\"table-container collapse mb-5\" id=\"collapse254366677\" style=\"margin-top: -2.5rem; marting-bottom: 2.5rem;\"><div class=\"rounded p-2 border border-dark\"><table class=\"table table-striped mb-0 pb-0 wp-block-epa-am-epa-produkte\"\"><thead class=\"table-dark\"><tr><th><i class=\"bi bi-file-earmark-fill\"> File<\/th><th class=\"filesize\"><i class=\"bi bi-hdd-fill\"><\/i> Size<\/th><\/tr><\/thead><tbody><tr class=\"foldername\"><td colspan=\"2\"><i class=\"oi oi-folder\"><\/i> <strong>Data_Sheets <span>\u00bb<\/span> LC<\/strong><\/td><\/tr><tr><td class=\"filepath\"><i class=\"bi bi-arrow-return-right\"><\/i> <a href=\"\/download\/en\/03_Data_Sheets\/03.03_LC\/EPA_EMC_Leakage-current-reduction-filters_NF-KC-DAR-3_data-sheet.pdf\">EPA_EMC_Leakage-current-reduction-filters_NF-KC-DAR-3_data-sheet.pdf<\/a><\/td><td class=\"filesize\">2.51 M<\/td><\/tr><tr class=\"foldername\"><td colspan=\"2\"><i class=\"oi oi-folder\"><\/i> <strong>CAD <span>\u00bb<\/span> EMV <span>\u00bb<\/span> NF <span>\u00bb<\/span> 3ph<\/strong><\/td><\/tr><tr><td class=\"filepath\"><i class=\"bi bi-arrow-return-right\"><\/i> <a href=\"\/download\/en\/06_CAD\/06.01_EMV\/06.01.01_NF\/06.01.01.02_3ph\/NF-KC-DAR-3.zip\">NF-KC-DAR-3.zip<\/a><\/td><td class=\"filesize\">1.33 M<\/td><\/tr><\/table><\/div><\/div><\/div>\n\n<h1><\/h1>\n<div class=\"wp-block-epa-am-epa-produkte\">\n    <div class=\"epa-block-products\" id=\"NF-KC-DAR2-3\">\n        <div class=\"card border-0 rounded-0\">\n            <div class=\"card-body\">\n\n                <div class=\"row g-0\">\n                    <div class=\"col-md-4\"><img decoding=\"async\" src=\"https:\/\/epa.de\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/product_NF-KC-DAR2-180-3-1024x768.jpg\" class=\"fluid img-thumbnail border border-primary rounded-0\" alt=\"Produktbild NF-KC-DAR2-3\"><\/div>                    <div class=\"col-md-8\">\n                        <div class=\"card-body\">\n                            <div class=\"product-sharing-options ps-2 pe-2 position-absolute top-0 end-0 m-2 bg-white rounded\">\n                                <a href=\"mailto:?subject=Sehen%20Sie%20sich%20NF-KC-DAR2-3%20auf%20epa.de%20an%21&#038;body=Hier%20der%20Link%3A%20https%3A%2F%2Fepa.de%2Fen%2Flc%2Fproducts%2Fleakage-current-reduction-filters%2F%23NF-KC-DAR2-3\" target=\"blank\" class=\"me-2\"><i class=\"bi bi-envelope\"><\/i><\/a>\n                                <a href=\".\/#NF-KC-DAR2-3\" target=\"blank\"><i class=\"bi bi-link-45deg\"><\/i><\/a>\n                            <\/div>\n\n                            <h3 class=\"card-title\">NF-KC-DAR2-3<\/h3>\n                            <p><p>Combined EMC and leakage current reduction filters (3-phase)<\/p><\/p>\n                            <ul class=\"list-group list-group-flush\"><li class=\"list-group-item\">Nominal currents from 16 A up to 230 A<\/li><li class='list-group-item'>Reduction of leakage current in the range of the switching frequency and significant EMC improvement<\/li><li class='list-group-item'>Horizintal and vertical mounting possible<\/li><li class='list-group-item'>Prevents unwanted RCD trippings<\/li><li class='list-group-item'>Suitable for frequency inverters and servo controllers with long motor cables<\/li><\/ul>                        <\/div>\n\n                        <!-- <div class=\"product-offset-border\"><\/div> -->\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n\n    <!-- Modal -->\n    <div class=\"modal modal-xl fade\" id=\"modal412464614\" tabindex=\"-1\" 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class=\"wpforms-field wpforms-field-select wpforms-field-select-style-classic\" data-field-id=\"5\"><label class=\"wpforms-field-label\" for=\"wpforms-5846-field_5\">Business or private customer <span class=\"wpforms-required-label\" aria-hidden=\"true\">*<\/span><\/label><select id=\"wpforms-5846-field_5\" class=\"wpforms-field-large wpforms-field-required\" name=\"wpforms[fields][5]\" required=\"required\"><option value=\"\" class=\"placeholder\" disabled  selected='selected'>Please choose \u2026<\/option><option value=\"Business customer\"  class=\"choice-1 depth-1\"  >Business customer<\/option><option value=\"Private customer\"  class=\"choice-2 depth-1\"  >Private customer<\/option><\/select><\/div><div id=\"wpforms-5846-field_6-container\" class=\"wpforms-field wpforms-field-select wpforms-field-select-style-classic\" data-field-id=\"6\"><label class=\"wpforms-field-label\" for=\"wpforms-5846-field_6\">Are you already a customer of ours? <span class=\"wpforms-required-label\" aria-hidden=\"true\">*<\/span><\/label><select id=\"wpforms-5846-field_6\" class=\"wpforms-field-large wpforms-field-required\" name=\"wpforms[fields][6]\" required=\"required\"><option value=\"\" class=\"placeholder\" disabled  selected='selected'>Please choose \u2026<\/option><option value=\"Yes\"  class=\"choice-1 depth-1\"  >Yes<\/option><option value=\"No\"  class=\"choice-2 depth-1\"  >No<\/option><\/select><\/div><div id=\"wpforms-5846-field_11-container\" class=\"wpforms-field wpforms-field-text\" data-field-id=\"11\"><label class=\"wpforms-field-label\" for=\"wpforms-5846-field_11\">Product <span class=\"wpforms-required-label\" aria-hidden=\"true\">*<\/span><\/label><input type=\"text\" id=\"wpforms-5846-field_11\" class=\"wpforms-field-large wpforms-field-required\" name=\"wpforms[fields][11]\" aria-errormessage=\"wpforms-5846-field_11-error\" required><\/div><div id=\"wpforms-5846-field_3-container\" class=\"wpforms-field wpforms-field-textarea\" data-field-id=\"3\"><label 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><input type=\"hidden\" name=\"wpforms[id]\" value=\"5846\"><input type=\"hidden\" name=\"page_title\" value=\"\"><input type=\"hidden\" name=\"page_url\" value=\"https:\/\/epa.de\/en\/wp-json\/wp\/v2\/pages\/131\"><input type=\"hidden\" name=\"url_referer\" value=\"\"><button type=\"submit\" name=\"wpforms[submit]\" id=\"wpforms-submit-5846\" class=\"wpforms-submit\" data-alt-text=\"Sending\u2026\" data-submit-text=\"Submit\" aria-live=\"assertive\" value=\"wpforms-submit\">Submit<\/button><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/epa.de\/en\/wp-content\/plugins\/wpforms-lite\/assets\/images\/submit-spin.svg\" class=\"wpforms-submit-spinner\" style=\"display: none;\" width=\"26\" height=\"26\" alt=\"Loading\"><\/div><\/form><\/div>  <!-- .wpforms-container -->                <\/div>\n                <div class=\"modal-footer\">\n                    <button type=\"button\" class=\"btn btn-secondary\" data-bs-dismiss=\"modal\"><i class=\"bi bi-x-lg\"><\/i> Close<\/button>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n\n    <script type=\"text\/javascript\">\n        function setProductName2modalForm412464614() {\n            var modalRandProductID = 'modal412464614';\n            var productName = 'NF-KC-DAR2-3';\n\n            \/\/ search for modalRandProductID\n            var modal = document.getElementById(modalRandProductID);\n\n            if (modal) {\n                \/\/ search for the field to populate\n                var field = modal.querySelector('#wpforms-5846-field_11');\n\n                if (field) {\n                    \/\/ populate field\n                    field.value = productName;\n                } else {\n                    console.error('No form selected.');\n                }\n            } else {\n                console.error('Modal not found: ' + modalRandProductID);\n            }\n        };\n    <\/script>\n\n    <div class=\"d-flex flex-row mt-2 mb-5\">\n        <button class=\"btn btn-primary w-50 me-1\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#collapse412464614\" aria-expanded=\"false\" aria-controls=\"collapse412464614\"><i class=\"bi bi-cloud-arrow-down-fill\"><\/i> Downloads for the product<\/button>\n        <button type=\"button\" class=\"btn btn-primary w-50 ms-1\" data-bs-toggle=\"modal\" data-bs-target=\"#modal412464614\" onclick=\"setProductName2modalForm412464614()\"><i class=\"bi bi-question-circle-fill\"><\/i> Request product<\/button>\n    <\/div>\n\n    <div class=\"table-container collapse mb-5\" id=\"collapse412464614\" style=\"margin-top: -2.5rem; marting-bottom: 2.5rem;\"><div class=\"rounded p-2 border border-dark\"><table class=\"table table-striped mb-0 pb-0 wp-block-epa-am-epa-produkte\"\"><thead class=\"table-dark\"><tr><th><i class=\"bi bi-file-earmark-fill\"> File<\/th><th class=\"filesize\"><i class=\"bi bi-hdd-fill\"><\/i> Size<\/th><\/tr><\/thead><tbody><tr class=\"foldername\"><td colspan=\"2\"><i class=\"oi oi-folder\"><\/i> <strong>Data_Sheets <span>\u00bb<\/span> LC<\/strong><\/td><\/tr><tr><td class=\"filepath\"><i class=\"bi bi-arrow-return-right\"><\/i> <a href=\"\/download\/en\/03_Data_Sheets\/03.03_LC\/EPA_EMC_Leakage-current-reduction-filters_NF-KC-DAR2-3_data-sheet.pdf\">EPA_EMC_Leakage-current-reduction-filters_NF-KC-DAR2-3_data-sheet.pdf<\/a><\/td><td class=\"filesize\">1.27 M<\/td><\/tr><tr class=\"foldername\"><td colspan=\"2\"><i class=\"oi oi-folder\"><\/i> <strong>CAD <span>\u00bb<\/span> EMV <span>\u00bb<\/span> NF <span>\u00bb<\/span> 3ph<\/strong><\/td><\/tr><tr><td class=\"filepath\"><i class=\"bi bi-arrow-return-right\"><\/i> <a href=\"\/download\/en\/06_CAD\/06.01_EMV\/06.01.01_NF\/06.01.01.02_3ph\/NF-KC-DAR2-3.zip\">NF-KC-DAR2-3.zip<\/a><\/td><td class=\"filesize\">2.84 M<\/td><\/tr><\/table><\/div><\/div><\/div>\n\n\n<div style=\"height:var(--wp--preset--spacing--70)\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading alignfull has-text-align-center has-white-color has-primary-darker-15-to-primary-darker-30-gradient-background has-text-color has-background has-link-color wp-elements-4f4fca11e6d6992208eef741dfbd6017\">Three-Phase (with Neutral)<\/h2>\n\n\n\n<div style=\"height:var(--wp--preset--spacing--70)\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<h1><\/h1>\n<div class=\"wp-block-epa-am-epa-produkte\">\n    <div class=\"epa-block-products\" id=\"NF-DAR-4\">\n        <div class=\"card border-0 rounded-0\">\n            <div class=\"card-body\">\n\n                <div class=\"row g-0\">\n                    <div class=\"col-md-4\"><img decoding=\"async\" src=\"https:\/\/epa.de\/en\/wp-content\/uploads\/sites\/2\/2025\/05\/product_NF-DAR-300-4-1024x768.jpg\" class=\"fluid img-thumbnail border border-primary rounded-0\" alt=\"Produktbild NF-DAR-4\"><\/div>                    <div class=\"col-md-8\">\n                        <div class=\"card-body\">\n                            <div class=\"product-sharing-options ps-2 pe-2 position-absolute top-0 end-0 m-2 bg-white rounded\">\n                                <a href=\"mailto:?subject=Sehen%20Sie%20sich%20NF-DAR-4%20auf%20epa.de%20an%21&#038;body=Hier%20der%20Link%3A%20https%3A%2F%2Fepa.de%2Fen%2Flc%2Fproducts%2Fleakage-current-reduction-filters%2F%23NF-DAR-4\" target=\"blank\" class=\"me-2\"><i class=\"bi bi-envelope\"><\/i><\/a>\n                                <a href=\".\/#NF-DAR-4\" target=\"blank\"><i class=\"bi bi-link-45deg\"><\/i><\/a>\n                            <\/div>\n\n                            <h3 class=\"card-title\">NF-DAR-4<\/h3>\n                            <p><p>Leakage Current Reduction Filter<\/p><\/p>\n                            <ul class=\"list-group list-group-flush\"><li class=\"list-group-item\">Especially for systems with RCCB 30 mA \/ 300 mA<\/li><li class='list-group-item'>To suppress undesirable leakage currents \u2265 2kHz<\/li><li class='list-group-item'>Supports the effect of existing EMC filter<\/li><li class='list-group-item'>Suitable for frequency inverters and servo drives with long motor cable<\/li><li class='list-group-item'>Without Y capacitor (no leakage current)<\/li><li class='list-group-item'>Fingerproof terminals<\/li><li class='list-group-item'>Current rating 16 A \u2013 400 A<\/li><\/ul>                        <\/div>\n\n                        <!-- <div class=\"product-offset-border\"><\/div> -->\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n\n    <!-- Modal -->\n    <div class=\"modal modal-xl fade\" id=\"modal553889361\" tabindex=\"-1\" role=\"dialog\" aria-labelledby=\"exampleModalLongTitle\" aria-hidden=\"true\">\n        <div class=\"modal-dialog\" role=\"document\">\n            <div class=\"modal-content\">\n                <div class=\"modal-header\">\n                    <h3 class=\"modal-title\" id=\"exampleModalLongTitle\">\n  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Downloads for the product<\/button>\n        <button type=\"button\" class=\"btn btn-primary w-50 ms-1\" data-bs-toggle=\"modal\" data-bs-target=\"#modal553889361\" onclick=\"setProductName2modalForm553889361()\"><i class=\"bi bi-question-circle-fill\"><\/i> Request product<\/button>\n    <\/div>\n\n    <div class=\"table-container collapse mb-5\" id=\"collapse553889361\" style=\"margin-top: -2.5rem; marting-bottom: 2.5rem;\"><div class=\"rounded p-2 border border-dark\"><table class=\"table table-striped mb-0 pb-0 wp-block-epa-am-epa-produkte\"\"><thead class=\"table-dark\"><tr><th><i class=\"bi bi-file-earmark-fill\"> File<\/th><th class=\"filesize\"><i class=\"bi bi-hdd-fill\"><\/i> Size<\/th><\/tr><\/thead><tbody><tr class=\"foldername\"><td colspan=\"2\"><i class=\"oi oi-folder\"><\/i> <strong>Data_Sheets <span>\u00bb<\/span> LC<\/strong><\/td><\/tr><tr><td class=\"filepath\"><i class=\"bi bi-arrow-return-right\"><\/i> <a href=\"\/download\/en\/03_Data_Sheets\/03.03_LC\/EPA_Leakage-current-reduction-filters_NF-DAR-4_data-sheet.pdf\">EPA_Leakage-current-reduction-filters_NF-DAR-4_data-sheet.pdf<\/a><\/td><td class=\"filesize\">2.52 M<\/td><\/tr><tr class=\"foldername\"><td colspan=\"2\"><i class=\"oi oi-folder\"><\/i> <strong>CAD <span>\u00bb<\/span> EMV <span>\u00bb<\/span> NF <span>\u00bb<\/span> 3ph+N<\/strong><\/td><\/tr><tr><td class=\"filepath\"><i class=\"bi bi-arrow-return-right\"><\/i> <a href=\"\/download\/en\/06_CAD\/06.01_EMV\/06.01.01_NF\/06.01.01.03_3ph+N\/NF-DAR-4.zip\">NF-DAR-4.zip<\/a><\/td><td class=\"filesize\">966.96 K<\/td><\/tr><\/table><\/div><\/div><\/div>\n\n<h1><\/h1>\n<div class=\"wp-block-epa-am-epa-produkte\">\n    <div class=\"epa-block-products\" id=\"NF-KC-DAR-4\">\n        <div class=\"card border-0 rounded-0\">\n            <div class=\"card-body\">\n\n                <div class=\"row g-0\">\n                    <div class=\"col-md-4\"><img decoding=\"async\" src=\"https:\/\/epa.de\/en\/wp-content\/uploads\/sites\/2\/2025\/05\/product_NF-KC-DAR-36-4-1-1024x768.jpg\" class=\"fluid img-thumbnail border border-primary rounded-0\" alt=\"Produktbild NF-KC-DAR-4\"><\/div>                    <div class=\"col-md-8\">\n                        <div class=\"card-body\">\n                            <div class=\"product-sharing-options ps-2 pe-2 position-absolute top-0 end-0 m-2 bg-white rounded\">\n                                <a href=\"mailto:?subject=Sehen%20Sie%20sich%20NF-KC-DAR-4%20auf%20epa.de%20an%21&#038;body=Hier%20der%20Link%3A%20https%3A%2F%2Fepa.de%2Fen%2Flc%2Fproducts%2Fleakage-current-reduction-filters%2F%23NF-KC-DAR-4\" target=\"blank\" class=\"me-2\"><i class=\"bi bi-envelope\"><\/i><\/a>\n                                <a href=\".\/#NF-KC-DAR-4\" target=\"blank\"><i class=\"bi bi-link-45deg\"><\/i><\/a>\n                            <\/div>\n\n                            <h3 class=\"card-title\">NF-KC-DAR-4<\/h3>\n                            <p><p>EMC Filter + Leakage Current Reduction Filter in one<\/p><\/p>\n                            <ul class=\"list-group list-group-flush\"><li class=\"list-group-item\">Especially for systems with RCCB 30 mA \/ 300 mA<\/li><li class='list-group-item'>To suppress undesirable leakage currents \u2265 2kHz<\/li><li class='list-group-item'>Combines EMC- and Leakage Current Reduction Filter<\/li><li class='list-group-item'>Comliance with the limits acc. to IEC\/EN 61800-3 Kat. C1 \/ C2<\/li><li class='list-group-item'>Suitable for frequency inverters and servo drives with long motor cable<\/li><li class='list-group-item'>High saturation resistance<\/li><li class='list-group-item'>Low leakage current<\/li><li class='list-group-item'>Fingerproof terminals<\/li><li class='list-group-item'>Current rating 16 A \u2013 180 A<\/li><\/ul>                        <\/div>\n\n                        <!-- <div class=\"product-offset-border\"><\/div> -->\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n\n    <!-- Modal -->\n    <div class=\"modal modal-xl fade\" id=\"modal1650201891\" tabindex=\"-1\" role=\"dialog\" aria-labelledby=\"exampleModalLongTitle\" aria-hidden=\"true\">\n        <div class=\"modal-dialog\" role=\"document\">\n            <div class=\"modal-content\">\n                <div class=\"modal-header\">\n                    <h3 class=\"modal-title\" id=\"exampleModalLongTitle\">\n                    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href=\"\/download\/en\/03_Data_Sheets\/03.03_LC\/EPA_EMC_Leakage-current-reduction-filters_NF-KC-DAR-4_data-sheet.pdf\">EPA_EMC_Leakage-current-reduction-filters_NF-KC-DAR-4_data-sheet.pdf<\/a><\/td><td class=\"filesize\">1.10 M<\/td><\/tr><tr class=\"foldername\"><td colspan=\"2\"><i class=\"oi oi-folder\"><\/i> <strong>CAD <span>\u00bb<\/span> EMV <span>\u00bb<\/span> NF <span>\u00bb<\/span> 3ph+N<\/strong><\/td><\/tr><tr><td class=\"filepath\"><i class=\"bi bi-arrow-return-right\"><\/i> <a href=\"\/download\/en\/06_CAD\/06.01_EMV\/06.01.01_NF\/06.01.01.03_3ph+N\/NF-KC-DAR-4.zip\">NF-KC-DAR-4.zip<\/a><\/td><td class=\"filesize\">584.03 K<\/td><\/tr><\/table><\/div><\/div><\/div>\n\n<h1><\/h1>\n<div class=\"wp-block-epa-am-epa-produkte\">\n    <div class=\"epa-block-products\" id=\"NF-KC-DAR2-4\">\n        <div class=\"card border-0 rounded-0\">\n            <div class=\"card-body\">\n\n                <div class=\"row g-0\">\n                    <div class=\"col-md-4\"><img 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class=\"card-title\">NF-KC-DAR2-4<\/h3>\n                            <p><p>Combined EMC and leakage current reduction filters (3-phase + N)<\/p><\/p>\n                            <ul class=\"list-group list-group-flush\"><li class=\"list-group-item\">Nominal currents from 16 A up to 180 A<\/li><li class='list-group-item'>Reduction of leakage current in the range of the switching frequency and significant EMC improvement<\/li><li class='list-group-item'>Horizintal and vertical mounting possible<\/li><li class='list-group-item'>Prevents unwanted RCD trippings<\/li><li class='list-group-item'>Suitable for frequency inverters and servo controllers with long motor cables<\/li><\/ul>                        <\/div>\n\n                        <!-- <div class=\"product-offset-border\"><\/div> -->\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n\n    <!-- Modal -->\n    <div class=\"modal modal-xl fade\" id=\"modal1084675809\" 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<button class=\"btn btn-primary w-50 me-1\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#collapse1084675809\" aria-expanded=\"false\" aria-controls=\"collapse1084675809\"><i class=\"bi bi-cloud-arrow-down-fill\"><\/i> Downloads for the product<\/button>\n        <button type=\"button\" class=\"btn btn-primary w-50 ms-1\" data-bs-toggle=\"modal\" data-bs-target=\"#modal1084675809\" onclick=\"setProductName2modalForm1084675809()\"><i class=\"bi bi-question-circle-fill\"><\/i> Request product<\/button>\n    <\/div>\n\n    <div class=\"table-container collapse mb-5\" id=\"collapse1084675809\" style=\"margin-top: -2.5rem; marting-bottom: 2.5rem;\"><div class=\"rounded p-2 border border-dark\"><table class=\"table table-striped mb-0 pb-0 wp-block-epa-am-epa-produkte\"\"><thead class=\"table-dark\"><tr><th><i class=\"bi bi-file-earmark-fill\"> File<\/th><th class=\"filesize\"><i class=\"bi bi-hdd-fill\"><\/i> Size<\/th><\/tr><\/thead><tbody><tr class=\"foldername\"><td colspan=\"2\"><i class=\"oi oi-folder\"><\/i> <strong>Data_Sheets <span>\u00bb<\/span> LC<\/strong><\/td><\/tr><tr><td class=\"filepath\"><i class=\"bi bi-arrow-return-right\"><\/i> <a href=\"\/download\/en\/03_Data_Sheets\/03.03_LC\/EPA_EMC_Leakage-current-reduction-filters_NF-KC-DAR2-4_data-sheet.pdf\">EPA_EMC_Leakage-current-reduction-filters_NF-KC-DAR2-4_data-sheet.pdf<\/a><\/td><td class=\"filesize\">1.16 M<\/td><\/tr><tr class=\"foldername\"><td colspan=\"2\"><i class=\"oi oi-folder\"><\/i> <strong>CAD <span>\u00bb<\/span> EMV <span>\u00bb<\/span> NF <span>\u00bb<\/span> 3ph+N<\/strong><\/td><\/tr><tr><td class=\"filepath\"><i class=\"bi bi-arrow-return-right\"><\/i> <a href=\"\/download\/en\/06_CAD\/06.01_EMV\/06.01.01_NF\/06.01.01.03_3ph+N\/NF-KC-DAR2-4.zip\">NF-KC-DAR2-4.zip<\/a><\/td><td class=\"filesize\">1.80 M<\/td><\/tr><\/table><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\">Operating a frequency inverter at an RCD can be a challenge!<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">EMC measures (such as RFI filters, motor filter, shielded motor cables) increase the leakage current to values that often force the RCD to trip. Residual current operated circuit breakers (RCCBs) are incapable of recognizing this key distinction between operational leakage current on the one hand and fault current from human contact or insulation defects on the other. RCDs with a conventional tripping of 30 mA (<strong>VDE 0100-410<\/strong>) are required for personal protection and with 300 mA or 420 mA (<strong>VDE 0100-482<\/strong>) for fire protection.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Since the introduction of the AC\/DC sensitive RCD (type B) and the effect of mandatory standards and policies that commit to its use, many plant operators are looking for solutions to prevent accidental tripping of the safety device. Even RCDs with a rated residual current of 300 mA cannot always be used without any problems, so the figures 1 and 2 show. In our example, a 1.5 kW three-phase AC motor was operated at a frequency inverter with 50 meters of shielded motor cable. In the time signal of the leakage current (<em>Fig. 1<\/em>), one can clearly see that peaks occur up to 1500 mA. The switching frequencies of the frequency inverters, which are usually in the range between 2 kHz and 16 kHz, are especially crucial with long motor cable lengths. By means of a Fourier analysis it is clear that the inverter switching frequency is set to a value of 6 kHz. The amplitude reaches here 450 mA rms (<em>Fig. 2<\/em>), which is way above the tripping threshold of the AC\/DC sensitive RCD (red line). During the starting or stopping of the drive, this value is even much higher.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is where the leakage current reduction filter NF-DAR puts things right. If you connect a NF-DAR filter between a RCD and frequency inverter, the leakage currents in the switching frequency range are reduced to a minimum (<em>Fig. 3-4<\/em>). The operation of one or more frequency inverters is thus possible again without problems!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Reduction of high frequent leakage currents from 2 up to 16 kHz with our leakage current reduction filters NF-DAR or combined RFI filters NF-KC-DAR Plant operators or manufacturers required to use a residual current device (RCD, RCCB) for personal or fire protection are well aware of the challenges posed by high leakage currents caused by <a href=\"https:\/\/epa.de\/en\/lc\/products\/leakage-current-reduction-filters\/\" class=\"more-link\">&#8230;<span class=\"screen-reader-text\">  Leakage Current Reduction Filters<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":3771,"menu_order":13,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-131","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/epa.de\/en\/wp-json\/wp\/v2\/pages\/131","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/epa.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/epa.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/epa.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/epa.de\/en\/wp-json\/wp\/v2\/comments?post=131"}],"version-history":[{"count":1,"href":"https:\/\/epa.de\/en\/wp-json\/wp\/v2\/pages\/131\/revisions"}],"predecessor-version":[{"id":6364,"href":"https:\/\/epa.de\/en\/wp-json\/wp\/v2\/pages\/131\/revisions\/6364"}],"up":[{"embeddable":true,"href":"https:\/\/epa.de\/en\/wp-json\/wp\/v2\/pages\/3771"}],"wp:attachment":[{"href":"https:\/\/epa.de\/en\/wp-json\/wp\/v2\/media?parent=131"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}