{"product_id":"3rw4446-6bc44-sirius-soft-starter-200-355kw-siemens","title":"3RW4446-6BC44 SIRIUS Soft Starter 200-355kW Siemens","description":"\u003ch2\u003e\u003cstrong\u003eSIRIUS 3RW4446-6BC44 Soft Starter – High-Capacity Motor Control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \u0026amp; Model:\u003c\/strong\u003e Siemens SIRIUS \u003cstrong\u003e3RW4446-6BC44\u003c\/strong\u003e – high-feature soft starter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Operational Current (40 °C):\u003c\/strong\u003e 356 A (standard), 617 A (inside-delta).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Power (400 V, 40 °C):\u003c\/strong\u003e 200 kW (standard), 355 kW (inside-delta).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 200 – 460 V AC, tolerance –15 % \/ +10 %.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Supply:\u003c\/strong\u003e 230 V AC, 50\/60 Hz, tolerance –15 % \/ +10 %.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Current Limitation:\u003c\/strong\u003e 71 – 356 A for precise motor overload protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Protection:\u003c\/strong\u003e motor overload, thermistor evaluation, intrinsic device protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmbient Temperature:\u003c\/strong\u003e up to 60 °C with derating; storage –25 … +80 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Dimensions:\u003c\/strong\u003e 210 mm (W) x 230 mm (H) x 298 mm (D).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Mounting Guidelines\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the unit vertically using screw fixing; tilt ±22.5° forward\/backward, rotate ±90°.\u003c\/li\u003e\n\u003cli\u003eMaintain clearances: 100 mm above, 75 mm below, and 5 mm sideways for proper airflow.\u003c\/li\u003e\n\u003cli\u003eMaximum cable length: 500 m; suitable for altitudes up to 5,000 m above sea level.\u003c\/li\u003e\n\u003cli\u003eMain circuit terminals accept 70 – 240 mm² fine-stranded or 95 – 300 mm² stranded wires.\u003c\/li\u003e\n\u003cli\u003eAuxiliary terminals support 0.5 – 2.5 mm² solid or fine-stranded with ferrule.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eElectrical Connections \u0026amp; Auxiliary Contacts\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMain circuit: busbar connection; auxiliary\/control: screw‑type terminals.\u003c\/li\u003e\n\u003cli\u003eProvides 3 NO contacts and 1 changeover contact (no NC contacts).\u003c\/li\u003e\n\u003cli\u003eSupports front, rear, or both clamping points for flexible wiring options.\u003c\/li\u003e\n\u003cli\u003eAWG conductors: main 2\/0 – 500 kcmil; auxiliary 20 – 14 AWG.\u003c\/li\u003e\n\u003cli\u003eIntegrated thyristors and bypass contactor reduce power loss (typ. 174 W).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eEnvironmental \u0026amp; Operational Conditions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRated frequency: 50 … 60 Hz with ±10 % tolerance.\u003c\/li\u003e\n\u003cli\u003eProtection class IP00 (IP20 with terminal cover); designed for control cabinet installation.\u003c\/li\u003e\n\u003cli\u003eContinuous overload capacity: 115 % of Ie at 40 °C.\u003c\/li\u003e\n\u003cli\u003eMinimum load: 8 % of motor rated current.\u003c\/li\u003e\n\u003cli\u003eThermal motor protection via PTC resistor evaluation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eWhat’s in the Box\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3RW4446-6BC44\u003c\/strong\u003e soft starter unit with integrated bypass.\u003c\/li\u003e\n\u003cli\u003ePrinted quick‑start guide (multilingual).\u003c\/li\u003e\n\u003cli\u003eMounting screws and terminal identification labels.\u003c\/li\u003e\n\u003cli\u003eNo additional accessories required for basic operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eShipping \u0026amp; Logistics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWe stock genuine \u003cstrong\u003e3RW4446-6BC44\u003c\/strong\u003e units for immediate dispatch.\u003c\/li\u003e\n\u003cli\u003eDelivery within 5 working days via FedEx, UPS, or DHL.\u003c\/li\u003e\n\u003cli\u003eAll shipments include tracking and insurance coverage.\u003c\/li\u003e\n\u003cli\u003e30‑day return policy for unused items in original packaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs the 3RW4446‑6BC44 brand new and original?\u003c\/strong\u003e – Yes, we supply only 100 % new, genuine Siemens SIRIUS products.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the maximum motor power for inside‑delta?\u003c\/strong\u003e – At 400 V, 40 °C, it handles 355 kW (617 A).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan I use this soft starter at 60 Hz?\u003c\/strong\u003e – Yes, it operates at 50 or 60 Hz with ±10 % tolerance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow do I connect the thermal protection?\u003c\/strong\u003e – Use the PTC resistor inputs; the device evaluates motor temperature directly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the minimum setting for current limitation?\u003c\/strong\u003e – Adjustable from 71 A up to rated current.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoes it support external reset?\u003c\/strong\u003e – Yes, the \u003cstrong\u003e3RW4446‑6BC44\u003c\/strong\u003e offers external reset functionality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat protection class does it have?\u003c\/strong\u003e – IP00 (IP20 with cover) – suitable for control cabinet installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo you offer technical support for installation?\u003c\/strong\u003e – Yes, our team provides application guidance for the SIRIUS series.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-top: 20px;\"\u003eFor any inquiries or to place an order, please contact us at \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e or reach us via WhatsApp at \u003ca href=\"https:\/\/wa.me\/8615392429628\"\u003e+86 153 9242 9628\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePartner NexAuto Technology Limited:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.nex-auto.com\/\" target=\"_blank\"\u003ehttps:\/\/www.nex-auto.com\/\u003c\/a\u003e\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46953406005409,"sku":"3RW4446-6BC44","price":236.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/3RW4446-6BC44.jpg?v=1788249853","url":"https:\/\/www.autonexcontrol.com\/products\/3rw4446-6bc44-sirius-soft-starter-200-355kw-siemens","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}