{"product_id":"3rw4453-6bc44-siemens-sirius-soft-starter-551a-315kw","title":"3RW4453-6BC44 Siemens SIRIUS Soft Starter 551A 315kW","description":"\u003ch2\u003e\u003cstrong\u003eSiemens 3RW4453-6BC44 SIRIUS Soft Starter – 551A, 315kW\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eCore Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens – \u003cstrong\u003e3RW4453-6BC44\u003c\/strong\u003e SIRIUS series (phase-out, successor \u003cstrong\u003e3RW5556-6HA14\u003c\/strong\u003e).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated current (400 V, 40 °C):\u003c\/strong\u003e 551 A standard; 954 A inside-delta.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor power (400 V):\u003c\/strong\u003e 315 kW (standard) and 560 kW (inside-delta).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating voltage:\u003c\/strong\u003e 200 – 460 V AC, with ±15% tolerance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl supply:\u003c\/strong\u003e 230 V AC, 50\/60 Hz ( ±10% frequency tolerance).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated protection:\u003c\/strong\u003e motor overload, thermistor evaluation, adjustable current limitation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower loss:\u003c\/strong\u003e only 159 W typical at rated current (40 °C).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eMechanical \u0026amp; Environmental Data\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W x H x D):\u003c\/strong\u003e 510 x 640 x 290 mm; weight 67 kg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e screw fixing; vertical surface ±90° rotatable, ±22.5° tilt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmbient temperature:\u003c\/strong\u003e operation up to 60 °C; storage -25 … +80 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation altitude:\u003c\/strong\u003e 5000 m max; derating above 40 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection class:\u003c\/strong\u003e IP00 (requires external enclosure).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eConnections \u0026amp; Wiring Details\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain circuit:\u003c\/strong\u003e busbar connection; cable lugs 50–240 mm² (stranded).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuxiliary contacts:\u003c\/strong\u003e 3 NO, 1 CO; screw terminals (0.5–2.5 mm²).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAWG conductors:\u003c\/strong\u003e main 2\/0 – 500 kcmil; auxiliary 20–14 AWG.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpacing requirements:\u003c\/strong\u003e 100 mm top, 75 mm bottom, 5 mm side.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax cable length:\u003c\/strong\u003e 500 m for control circuits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is this starter suitable for a 315 kW motor at 400 V?\u003c\/strong\u003e\u003cbr\u003eA: Yes, the \u003cstrong\u003e3RW4453-6BC44\u003c\/strong\u003e provides exactly 315 kW at 400 V standard circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can I use it with a 230 V AC control supply?\u003c\/strong\u003e\u003cbr\u003eA: Absolutely, the control circuit accepts 230 V AC, 50\/60 Hz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the maximum ambient temperature for full current rating?\u003c\/strong\u003e\u003cbr\u003eA: Rated current is specified at 40 °C; derate above that up to 60 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does the device include motor overload protection?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it features adjustable overload and thermal resistor (PTC) protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How do I connect the integrated bypass?\u003c\/strong\u003e\u003cbr\u003eA: The bypass system is internal – no external wiring needed for operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eContact Information\u003c\/strong\u003e\u003cbr\u003eFor inquiries: \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e  |  \u003ca href=\"https:\/\/wa.me\/8615392429628\"\u003e+86 153 9242 9628\u003c\/a\u003e (WhatsApp)\u003cbr\u003ePartner: \u003ca href=\"https:\/\/www.nex-auto.com\/\" target=\"_blank\"\u003eNexAuto Technology Limited\u003c\/a\u003e\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46551242932385,"sku":"3RW4453-6BC44","price":216.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/3RW4453-6BC44.jpg?v=1781688516","url":"https:\/\/www.autonexcontrol.com\/products\/3rw4453-6bc44-siemens-sirius-soft-starter-551a-315kw","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}