{"product_id":"siemens-miniature-circuit-breaker-3-pole-d-d-70mm-400v-15ka-4a","title":"Siemens Miniature circuit breaker, 3-pole, D, D=70mm, 400V, 15kA, 4A","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 5SY7304-8 is a 3-pole miniature circuit breaker (MCB) from the SENTRON 5SY7 series. It is rated at 4 A with a D-curve tripping characteristic, suitable for circuits with high inrush currents—and features a high breaking capacity of up to 15 kA under IEC 60898-1 and up to 40 kA under IEC 60947-2.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3-pole design for three-phase circuit protection\u003c\/li\u003e\n\u003cli\u003eD-curve tripping characteristic ideal for inductive loads with high inrush currents\u003c\/li\u003e\n\u003cli\u003eRated operational current: 4 A at 400 V AC\u003c\/li\u003e\n\u003cli\u003eHigh short-circuit breaking capacity: 15 kA (EN 60898) \/ up to 40 kA (IEC 60947-2)\u003c\/li\u003e\n\u003cli\u003eCompact width corresponding to 3 modular units, suitable for DIN-rail mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Series:\u003c\/strong\u003e SENTRON 5SY7 Miniature Circuit Breakers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArticle Number:\u003c\/strong\u003e 5SY7304-8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3 (3-pole)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTripping Characteristic:\u003c\/strong\u003e D-curve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Current (In):\u003c\/strong\u003e 4 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Operational Voltage (Ue):\u003c\/strong\u003e 400 V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Insulation Voltage (Ui):\u003c\/strong\u003e 440 V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Impulse Withstand Voltage (Uimp):\u003c\/strong\u003e 4 kV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShort-Circuit Breaking Capacity (Icn):\u003c\/strong\u003e 15 kA (EN 60898); 40 kA (IEC 60947-2)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth \/ Modular Units:\u003c\/strong\u003e 54 mm (~3 units)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth (Installation):\u003c\/strong\u003e 70 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 90 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet Weight (Approx.):\u003c\/strong\u003e 0.452 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Class:\u003c\/strong\u003e IP20 (with connected conductors)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Ambient Temperature Range:\u003c\/strong\u003e –40 °C to +70 °C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompliance \u0026amp; Certifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eComplies with IEC\/EN 60898-1 and IEC\/EN 60947-2 standards for miniature circuit breakers\u003c\/li\u003e\n\u003cli\u003eManufactured under Siemens SENTRON series quality standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 5SY7304-8 is designed for use in commercial and industrial electrical distribution panels where high inrush currents may be encountered—such as motors, transformers or capacitive loads—and where high breaking capacity is required. Its compact 3-module width and 3-pole design make it well suited for three-phase branch circuits requiring robust protection.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":40775091716160,"sku":"5SY7304-8","price":2349.21,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/3662\/3424\/files\/5SY7304-8.jpg?v=1762268975","url":"https:\/\/industrial.rubicon.tech\/products\/siemens-miniature-circuit-breaker-3-pole-d-d-70mm-400v-15ka-4a","provider":"Rubicon Group Industrial Technology Shop","version":"1.0","type":"link"}