{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4466-2BC46","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4466-2BC46","canonicalUrl":"https://aoctrl.com/siemens/3RW4466-2BC46","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4466-2BC46","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4466-2BC46 soft starter, 2103 A at 40 °C, 690 V insulation voltage, 50/60 Hz, integrated bypass, inside-delta circuit, screw fixing, 575 x 780 x 292 mm (WxHxD).","salesMarkdown":"## Continuous current at your panel ambient The 3RW4466-2BC46: The headline rating is 2103 A at 40 °C. The derating starts at 40 °C, so the installation's ambient temperature inside the enclosure sets the usable current — not the catalogue maximum. Insulation voltage is 690 V, and the operating frequency covers 50 to 60 Hz — suitable for global line supplies without a frequency derate. ## Bypass, thyristors, and wiring topology An integrated bypass contact system means the thyristors are shorted out after the start — the unit runs at near-zero forward drop in steady state, which eliminates the need to size the enclosure for continuous thyristor heat dissipation. Inside-delta wiring is supported, which lets the starter see phase-to-phase voltage rather than phase-to-neutral — this reduces the current per thyristor path and can allow a smaller frame for the same motor current. ## Mounting, clearances, and termination Screw fixing onto a vertical mounting surface; the unit can be rotated ±90° or tilted ±22.5° front/back. Minimum clearances: 100 mm above, 75 mm below, 5 mm at the sides. Main current circuit termination is busbar connection with a wire range of 70–240 mm² stranded or 50–240 mm² finely stranded, plus 2/0–500 kcmil. ## Protection, control, and compliance Motor overload protection and intrinsic device protection are built in, with adjustable current limitation. A display shows fault signals, and an external reset input allows remote clearing of trips. Pollution degree 3 per IEC 60947-4-2 — the starter is rated for industrial environments with conductive contamination. Maximum motor cable length is 500 m. Operating temperature range is 60 °C during operation, storage from -25 to +80 °C.","metaTitle":"Siemens 3RW4466-2BC46 SIRIUS Soft Starter, 2103 A, 690 V","metaDescription":"Siemens 3RW4466-2BC46 SIRIUS soft starter, 2103 A at 40 °C, 690 V insulation, integrated bypass, inside-delta capable. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Soft Starters"],"specifications":{"Depth":"292mm","Solid":"2x (0.25 ... 1.5 mm²)","Width":"575mm","title":"3RW4466-2BC46","Height":"780mm","Upwards":"100mm","Stranded":"70 ... 240 mm²","Downwards":"75mm","Thyristors":"Yes","At The Side":"5mm","description":"SIRIUS soft starter Values at 690 V, 40 °C standard: 1214 A, 1200 kW Inside-delta: only up to 600 V 400-690 V AC, 230 V AC spring-type terminals!!! Phased-out product!!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5558-2HA16<<","During Storage":"-25 ... +80°C","External Reset":"Yes","Finely Stranded":"50 ... 240 mm²","lifecycle_stage":"current","During Operation":"60°C","Fastening Method":"screw fixing","Minimum Load [%]":"8%","For Main Contacts":"2/0 ... 500 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":"2 103A","at 50 °C rated value":"1 864A","at 60 °C rated value":"1 680A","For Auxiliary Contacts":"2x (24 ... 16)","For Main Current Circuit":"busbar connection","Motor Overload Protection":"Yes","Intrinsic Device Protection":"Yes","Adjustable Current Limitation":"Yes","Insulation Voltage Rated Value":"690V","Operating Frequency Rated Value":"50 ... 60Hz","Display Version For Fault Signal":"Display","Integrated Bypass Contact System":"Yes","For Auxiliary And Control Circuit":"spring-loaded 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 (0.25 ... 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":"900kW","at standard circuit at 50 °C rated value":"1 200hp","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":"1 500kW","at inside-delta circuit at 50 °C rated value":"2 100hp","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":"400 ... 690V","at 690 V at standard circuit at 40 °C rated value":"1 200kW","contact rating of auxiliary contacts according to UL":"B300 / R300","Operating Voltage At Inside-Delta Circuit Rated Value":"400 ... 600V","Relative Negative Tolerance Of The Operating Frequency":"-10%","Relative Positive Tolerance Of The Operating Frequency":"10%","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":"630W","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":"242A","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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3017052e0ec48669df0f328070e2c8f4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=404238&mlfb=3RW4466-2BC46"},"ai":{"faq":[{"question":"What is the maximum motor cable length for 3RW4466-2BC46?","answer":"The maximum motor cable length is 500 m. Longer runs may require an output reactor to limit reflected-wave voltage stress on the motor insulation."},{"question":"Can 3RW4466-2BC46 be wired in inside-delta configuration?","answer":"Yes — the starter supports inside-delta circuit wiring. This connects the thyristors in series with each motor winding rather than in the supply lines, reducing the current per thyristor path."},{"question":"What compliance documentation does Siemens provide for 3RW4466-2BC46?","answer":"The starter is certified to IEC 60947-4-2 for pollution degree 3. Siemens typically supplies a declaration of conformity covering the applicable EU directives; specific RoHS/REACH declarations are available on request through the distributor at RFQ time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4466-2BC46","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/3RW4466-2BC46 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}