{"product_id":"siemens-surge-protector-din-rail-mount-3-phase-25ka","title":"Siemens Surge protector, Din rail mount, 3-phase, 25kA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 5SD7444-1 is a combination surge arrester (type 1 + 2) in requirement class B + C, designed for low-voltage power distribution systems. It supports TN-S and TT networks, features a 4-pole (3 + N\/PE) configuration and includes plug-in protective modules with remote signalling capability.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSurge protection device (SPD), combination arrester type 1 + 2 (classes I + II)\u003c\/li\u003e\n\u003cli\u003eRated continuous operating voltage Uc: up to 350 V AC\u003c\/li\u003e\n\u003cli\u003e4-pole design (3 phases + neutral\/PE) for TN-S and TT systems\u003c\/li\u003e\n\u003cli\u003ePlug-in protective modules; remote display and remote signalling contact included\u003c\/li\u003e\n\u003cli\u003eDIN-rail mounting on TH35 profile for easy installation\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 Siemens SENTRON SPD Accessories\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArticle Number:\u003c\/strong\u003e 5SD7444-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard(s):\u003c\/strong\u003e IEC 61643-11:2011 \/ EN 61643-11:2012\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSPD Classification:\u003c\/strong\u003e Test Class I (Type 1): Yes; Test Class II (Type 2): Yes; Test Class III (Type 3): No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistribution Systems Supported:\u003c\/strong\u003e TN-S, TT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous Operating Voltage (U c):\u003c\/strong\u003e Maximum 350 V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightning Current Peak Value (10\/350 µs):\u003c\/strong\u003e L-N: 25 kA; L-PE: 25 kA; N-PE: 100 kA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Discharge Current (8\/20 µs):\u003c\/strong\u003e L-(PE)N: 25 kA; L-PE: 25 kA; N-PE: 100 kA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Level (Up-voltage):\u003c\/strong\u003e L-N ≤1.5 kV; L-PE ≤2.2 kV; N-PE ≤1.5 kV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W × H × D):\u003c\/strong\u003e ~142.8 mm × 95 mm × 71.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet Weight:\u003c\/strong\u003e Approx. 1.372 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmbient Operating Temperature:\u003c\/strong\u003e -40 °C to +80 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e Screw terminals; stripped length 18 mm; M5 thread; conductor cross-section rigid 2.5 … 35 mm²; fine-stranded 2.5 … 25 mm²\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Signalling Contact:\u003c\/strong\u003e Optical\/PDT contact, AC 12…250 V, 10 mA…1 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePollution Degree:\u003c\/strong\u003e 2; Protection Class at terminals: IP20\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 standards for surge protective devices in low-voltage systems\u003c\/li\u003e\n\u003cli\u003eManufactured under Siemens quality standards, RoHS-compliant, suitable for industrial distribution systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 5SD7444-1 is ideal for installation in low-voltage power distribution panels where comprehensive surge protection (both type 1 and type 2) is required. It is well-suited for TN-S and TT systems in commercial, industrial and infrastructure settings, offering high protection levels, remote signalling capability and plug-in module convenience.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":40775093551168,"sku":"5SD7444-1","price":23746.03,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/3662\/3424\/files\/5SD7444-1.jpg?v=1762000182","url":"https:\/\/industrial.rubicon.tech\/products\/siemens-surge-protector-din-rail-mount-3-phase-25ka","provider":"Rubicon Group Industrial Technology Shop","version":"1.0","type":"link"}