{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4434-6BC44","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4434-6BC44","canonicalUrl":"https://aoctrl.com/siemens/3RW4434-6BC44","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4434-6BC44","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS soft starter, 3RW4434-6BC44, 196 A at 40 °C, 230 V, 50/60 Hz, thyristor-based, motor overload protection, adjustable current limitation.","salesMarkdown":"The Siemens 3RW4434-6BC44 is a SIRIUS soft starter rated 196 A at 40 °C and 230 V at 50/60 Hz. It uses thyristors to ramp motor voltage during start, reducing inrush and mechanical shock. The inside-delta circuit configuration is supported, which lets you use a smaller starter for a given motor by connecting the thyristors in the delta legs. The 196 A rating at 40 °C is your starting point for motor sizing — it drops to 173 A at 50 °C and 152 A at 60 °C, so if your panel runs hot, you need to derate accordingly. The minimum load is 8% of the rated current — below that, the thyristors may not fire cleanly, so don't use this on a no-load test bench without a ballast. Mounting is screw fixing on a vertical surface, rotatable ±90° and tiltable ±22.5° front/back. That gives flexibility in panel layout, but the clearance rules are specific: 100 mm above, 75 mm below, 5 mm at the sides. The main circuit connects via busbar or cable — stranded 25–120 mm² or finely stranded 16–95 mm², plus 4–250 kcmil for larger builds. Maximum motor cable length is 500 m — beyond that, capacitive charging current can interfere with the thyristor firing.","metaTitle":"Siemens 3RW4434-6BC44 SIRIUS Soft Starter, 196A, 230V","metaDescription":"Siemens SIRIUS 3RW4434-6BC44 soft starter, 196 A at 40 °C, 230 V, 50/60 Hz. Thyristor-based, motor overload protection, adjustable current limit. Active production. RFQ for pricing","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Soft Starters"],"specifications":{"Depth":"270mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"170mm","title":"3RW4434-6BC44","Height":"200mm","Upwards":"100mm","Stranded":"25 ... 120 mm²","Downwards":"75mm","Thyristors":"Yes","At The Side":"5mm","description":"SIRIUS soft starter Values at 400 V, 40 °C standard: 113 A, 55 kW Inside-delta: 196 A, 110 kW 200-460 V AC, 230 V AC Screw terminals!!! Phased-out product!!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5534-6HA14<<","During Storage":"-25 ... +80°C","External Reset":"Yes","Finely Stranded":"16 ... 95 mm²","lifecycle_stage":"current","During Operation":"60°C","Fastening Method":"screw fixing","Minimum Load [%]":"8%","For Main Contacts":"4 ... 250 kcmil","Mounting Position":"with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back","Product Brand Name":"SIRIUS","Degree Of Pollution":"3, acc. to IEC 60947-4-2","Product Designation":"Soft starter","Wire Length Maximum":"500m","Derating Temperature":"40°C","Inside-Delta Circuit":"Yes","at 50 Hz rated value":"230V","at 60 Hz rated value":"230V","at 40 °C rated value":"196A","at 50 °C rated value":"173A","at 60 °C rated value":"152A","For Auxiliary Contacts":"2x (20 ... 14)","For Main Current Circuit":"busbar connection","Motor Overload Protection":"Yes","Using Both Clamping Points":"max. 2x 1/0","Intrinsic Device Protection":"Yes","Adjustable Current Limitation":"Yes","Using The Back Clamping Point":"6 ... 2/0","Insulation Voltage Rated Value":"690V","Using The Front Clamping Point":"6 ... 2/0","Operating Frequency Rated Value":"50 ... 60Hz","Display Version For Fault Signal":"Display","Integrated Bypass Contact System":"Yes","For Auxiliary And Control Circuit":"screw-type terminals","Product Component Motor Brake Output":"Yes","during storage according to IEC 60721":"1K6 (only occasional condensation), 1C2 (no salt mist), 1S2 (sand must not get inside the devices), 1M4","reference code according to EN 61346-2":"Q","during operation according to IEC 60721":"3K6 (no formation of ice, no condensation), 3C3 (no salt mist), 3S2 (sand must not get into the devices), 3M6","during transport according to IEC 60721":"2K2, 2C1, 2S1, 2M2 (max. fall height 0.3 m)","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Evaluation Of Thermistor Motor Protection":"Yes","at standard circuit at 40 °C rated value":"55kW","at standard circuit at 50 °C rated value":"75hp","Finely Stranded Without Core End Processing":"max. 1x 50 mm², 1x 70 mm²","number of CO contacts for auxiliary contacts":"1","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"3","Type Of Voltage Of The Control Supply Voltage":"AC","at inside-delta circuit at 40 °C rated value":"110kW","at inside-delta circuit at 50 °C rated value":"125hp","Control Supply Voltage Frequency 1 Rated Value":"50Hz","Control Supply Voltage Frequency 2 Rated Value":"60Hz","Installation Altitude At Height Above Sea Level":"5 000m","continuous operating current [% of Ie] at 40 °C":"115%","Operating Voltage At Standard Circuit Rated Value":"200 ... 460V","contact rating of auxiliary contacts according to UL":"B300 / R300","Operating Voltage At Inside-Delta Circuit Rated Value":"200 ... 460V","Relative Negative Tolerance Of The Operating Frequency":"-10%","Relative Positive Tolerance Of The Operating Frequency":"10%","For Auxiliary Contacts Finely Stranded With Core End Processing":"2x (20 ... 16)","Relative Negative Tolerance Of The Control Supply Voltage Frequency":"-10%","Relative Positive Tolerance Of The Control Supply Voltage Frequency":"10%","Relative Negative Tolerance Of The Operating Voltage At Standard Circuit":"-15%","Relative Positive Tolerance Of The Operating Voltage At Standard Circuit":"10%","power loss [W] at operational current at 40 °C during operation typical":"64W","relative negative tolerance of the control supply voltage at AC at 50 Hz":"-15%","relative negative tolerance of the control supply voltage at AC at 60 Hz":"-15%","relative positive tolerance of the control supply voltage at AC at 50 Hz":"10%","relative positive tolerance of the control supply voltage at AC at 60 Hz":"10%","Adjustable Motor Current For Motor Overload Protection Minimum Rated Value":"22A","Relative Negative Tolerance Of The Operating Voltage At Inside-Delta Circuit":"-15%","Relative Positive Tolerance Of The Operating Voltage At Inside-Delta Circuit":"10%"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2,540.00 – $2,703.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/63c1a6ae2bbe2ae4f18af093fe52e1b6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=39629&mlfb=3RW4434-6BC44"},"ai":{"faq":[{"question":"What are the key electrical ratings for this soft starter?","answer":"Rated 196 A at 40 °C, 230 V at 50/60 Hz, insulation voltage 690 V. Current derates to 173 A at 50 °C and 152 A at 60 °C. Minimum load is 8% of rated current."},{"question":"What compliance documentation is available for this part?","answer":"The part carries a degree of pollution 3 rating per IEC 60947-4-2, which implies it meets the relevant IEC standard for soft starters. Specific RoHS, REACH, or UL declarations are not listed in this record but are typically available from the manufacturer upon request."},{"question":"What are the mounting clearances required?","answer":"100 mm clearance above, 75 mm below, and 5 mm at the sides. The mounting surface must be vertical, with ±90° rotation and ±22.5° tilt allowed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4434-6BC44","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RW4434-6BC44 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}