{"product_id":"schneider-electric-50440-ma120-series-closed-toroid-ct-250-a-1-1000","title":"Schneider Electric – 50440 – MA120 Series Closed Toroid CT, 250 A \/ 1:1000","description":"\u003cp class=\"p1\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eSchneider Electric 50440\u003c\/b\u003e\u003c\/span\u003e is a MA120-series closed-core current transformer (toroid) designed for Vigilohm insulation monitoring and VigiPacT type‑A residual current relays. With a 1:1000 transformation ratio and large 120 mm inner bore, it measures up to 250 A continuously and provides precise leakage\/residual current detection in power distribution panels.\u003c\/p\u003e\u003cp class=\"p2\"\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003c\/p\u003e\u003cp class=\"p2\"\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003ch3\u003e\u003cb\u003e Key Features \u0026amp; Specifications\u003c\/b\u003e\u003c\/h3\u003e\u003cp\u003e\u003c\/p\u003e\u003cp class=\"p2\"\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eModel \/ P\/N:\u003c\/b\u003e\u003c\/span\u003e 50440; MA120 toroidal CT, 250 A continuous, 1:1000 ratio\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eInner Diameter:\u003c\/b\u003e\u003c\/span\u003e 120 mm (4.72 in) — accommodates multicore cables up to 60 mm Ø \u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eRated Current:\u003c\/b\u003e\u003c\/span\u003e 250 A AC; supports residual current protection and insulation monitoring \u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTransformation Ratio:\u003c\/b\u003e\u003c\/span\u003e 1:1000; compatible with VigiPacT, Vigilohm, MIS relays \u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eStandards:\u003c\/b\u003e\u003c\/span\u003e IEC 60947‑2; impulse withstand 12 kV, short-time withstand 85 kA\/0.5 s \u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eConstruction:\u003c\/b\u003e\u003c\/span\u003e Closed toroid, screw terminals; 0.45–0.6 kg depending on spec \u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTemperature Rating:\u003c\/b\u003e\u003c\/span\u003e –35…+70 °C; storage down to –55 °C \u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCertifications:\u003c\/b\u003e\u003c\/span\u003e UL, CSA, CE listed for industrial panel use \u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Schneider Electric","offers":[{"title":"Default Title","offer_id":55844477862262,"sku":"EB-286674301952","price":236.55,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/4202\/8857\/files\/57_0783e32f-5222-4b94-9228-67b49e764faa.jpg?v=1751150658","url":"https:\/\/volt-werk.com\/products\/schneider-electric-50440-ma120-series-closed-toroid-ct-250-a-1-1000","provider":"VOLTWERK Handel","version":"1.0","type":"link"}