{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4047-2BB05","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4047-2BB05","canonicalUrl":"https://aoctrl.com/siemens/3RW4047-2BB05","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4047-2BB05","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4047-2BB05 soft starter, S3 frame, 106 A at 40 °C, 50/60 Hz, screw-type terminals, screw and snap-on mounting.","salesMarkdown":"## 106 A at 40 °C — thermal derating drives the panel layout The 3RW4047-2BB05: That derating curve means the enclosure ambient temperature directly sets the usable motor current — if the cabinet runs at 50 °C, you lose 8 A of headroom. Integrated motor overload protection and adjustable current limitation are built in, so no separate overload relay is needed for most installations. The minimum load is 20 % of the rated current, which covers lightly loaded conveyors or pumps. Pollution degree 3 per IEC 60947-4-2 confirms it is rated for the conductive dust and humidity typical of industrial control panels without additional conformal coating. ## Mounting and wiring — screw terminals, DIN or panel Fastening method is screw and snap-on mounting — it clips onto a DIN rail or bolts directly to a backplate. Dimensions are 70 mm wide, 170 mm high, 190 mm deep, so it fits a standard S3 footprint. Main circuit terminals accept 2x (7 … 1/0) AWG screw-type lugs. Auxiliary contacts take 2x (24 … 14) AWG. The control supply is 24 V at 50/60 Hz — common for PLC-driven panels. Clearance requirements: 60 mm above, 40 mm below, 30 mm at the sides for airflow. Without an additional fan, the mounting surface must be vertical with ±10° rotation and ±10° tilt. With the optional fan, rotation tolerance opens to ±90° and tilt to ±22.5°. ## Active production — no obsolescence risk Lifecycle status is current production.","metaTitle":"Siemens 3RW4047-2BB05 Soft Starter, 106 A, SIRIUS S3","metaDescription":"Siemens 3RW4047-2BB05 SIRIUS soft starter, 106 A at 40°C, 50/60 Hz, screw terminals, active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"Depth":"190mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"70mm","title":"3RW4047-2BB05","Height":"170mm","Upwards":"60mm","Stranded":"2x (10 ... 70 mm²)","Downwards":"40mm","Thyristors":"Yes","At The Side":"30mm","description":"SIRIUS soft starter S3 106 A, 75 kW/500 V, 40 °C 400-600 V AC, 24 V AC/DC spring-type terminals","During Storage":"-40 ... +80°C","External Reset":"Yes","Finely Stranded":"2 x (10 ... 50 mm²)","lifecycle_stage":"current","During Operation":"-25 ... +60°C","Fastening Method":"screw and snap-on mounting","Minimum Load [%]":"20%","For Main Contacts":"2x (7 ... 1/0)","Mounting Position":"With additional fan: With vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back Without additional fan: With vertical mounting surface +/-10° rotatable, with vertical mounting surface +/- 10° t","Product Brand Name":"SIRIUS","Degree Of Pollution":"3, acc. to IEC 60947-4-2","Product Designation":"Soft starter","Wire Length Maximum":"300m","Derating Temperature":"40°C","Inside-Delta Circuit":"No","at 50 Hz rated value":"24V","at 60 Hz rated value":"24V","at 40 °C rated value":"106A","at 50 °C rated value":"98A","at 60 °C rated value":"90A","For Auxiliary Contacts":"2x (24 ... 14)","For Main Current Circuit":"screw-type terminals","Motor Overload Protection":"Yes","Using Both Clamping Points":"10 ... 2/0","Intrinsic Device Protection":"Yes","Adjustable Current Limitation":"Yes","Size Of Engine Control Device":"S3","Using The Back Clamping Point":"2x (10 ... 1/0)","Insulation Voltage Rated Value":"600V","Using The Front Clamping Point":"2x (10 ... 1/0)","Operating Frequency Rated Value":"50 ... 60Hz","Display Version For Fault Signal":"red","Integrated Bypass Contact System":"Yes","For Auxiliary And Control Circuit":"spring-loaded terminals","Product Component Motor Brake Output":"No","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":"No","at standard circuit at 40 °C rated value":"75kW","at standard circuit at 50 °C rated value":"75hp","control supply voltage 1 at DC rated value":"24V","number of CO contacts for auxiliary contacts":"1","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"2","Type Of Voltage Of The Control Supply Voltage":"AC/DC","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 ... 600V","contact rating of auxiliary contacts according to UL":"B300 / R300","Relative Negative Tolerance Of The Operating Frequency":"-10%","Relative Positive Tolerance Of The Operating Frequency":"10%","relative negative tolerance of the control supply voltage at DC":"-20%","relative positive tolerance of the control supply voltage at DC":"20%","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":"21W","relative negative tolerance of the control supply voltage at AC at 50 Hz":"-20%","relative negative tolerance of the control supply voltage at AC at 60 Hz":"-20%","relative positive tolerance of the control supply voltage at AC at 50 Hz":"20%","relative positive tolerance of the control supply voltage at AC at 60 Hz":"20%","Adjustable Motor Current For Motor Overload Protection Minimum Rated Value":"46A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$916.94","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/857bd9acb2861ae1c01dd2809a48e201.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=193980&mlfb=3RW4047-2BB05"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 3RW4047-2BB05?","answer":"The soft starter is rated pollution degree 3 per IEC 60947-4-2, which covers industrial environments. Standard Siemens documentation includes the product datasheet and declaration of conformity for CE/UKCA; specific RoHS/REACH/UL documentation should be requested at RFQ time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4047-2BB05","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/3RW4047-2BB05 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}}