{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4466-6BC36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4466-6BC36","canonicalUrl":"https://aoctrl.com/siemens/3RW4466-6BC36","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4466-6BC36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4466-6BC36 soft starter, 2103 A at 40 °C, 690 V insulation voltage, 50/60 Hz, integrated bypass, screw fixing.","salesMarkdown":"## Current ratings and thermal derating The 3RW4466-6BC36: The derating temperature threshold is 40 °C, so any panel ambient above that clips the available current linearly. Insulation voltage is rated 690 V, operating frequency 50/60 Hz at 115 V control supply. The inside-delta circuit configuration is supported, which reduces the current through the thyristors by a factor of √3 compared to standard in-line wiring — useful for retrofitting into existing motor circuits without upsizing the starter. ## Protection and control features Motor overload protection and intrinsic device protection are built in, plus adjustable current limitation — set the start ramp ceiling to match the load without tripping upstream feeders. The integrated bypass contact system shunts the thyristors after start, eliminating heat dissipation in the power stack during run. Minimum load is 8 % of the rated current, so it handles lightly loaded motors without dropping out. External reset and a display for fault signals simplify troubleshooting on the line. ## Mounting and wiring constraints Mounting is screw fixing with a vertical surface — the unit can be rotated ±90° or tilted ±22.5° front/back. Clearance requirements: 100 mm upwards, 75 mm downwards, 5 mm at the sides. Dimensions are 780 mm height, 575 mm width, 292 mm depth — a large frame that needs a dedicated panel bay. Main current circuit connection uses busbar; the terminal ranges are 70–240 mm² stranded and 50–240 mm² finely stranded, or 2/0–500 kcmil for the main contacts. Maximum motor wire length is 500 m.","metaTitle":"Siemens 3RW4466-6BC36 Soft Starter, 2103 A at 40 °C, SIRIUS","metaDescription":"Siemens SIRIUS soft starter 3RW4466-6BC36, rated 2103 A at 40 °C, 690 V insulation, 50/60 Hz. Integrated bypass, current limitation, motor overload protection.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Soft Starters"],"specifications":{"Depth":"292mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"575mm","title":"3RW4466-6BC36","Height":"780mm","Upwards":"100mm","Stranded":"70 ... 240 mm²","Downwards":"75mm","Thyristors":"Yes","At The Side":"5mm","description":"SIRIUS soft starter Values at 575 V, 50 °C standard: 1076 A, 1200 hp Inside-delta: 1864 A, 2100 hp 400-690 V AC, 115 V AC Screw terminals!!! Phased-out product!!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5558-6HA16<<","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":"115V","at 60 Hz rated value":"115V","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 (20 ... 14)","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":"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":"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%","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":"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/6c2019eecf9844c8a3a5354d217d444e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=254780&mlfb=3RW4466-6BC36"},"ai":{"faq":[{"question":"What are the key current ratings for the 3RW4466-6BC36?","answer":"The derating temperature threshold is 40 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4466-6BC36","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/3RW4466-6BC36 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}}