{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4046-1TB04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4046-1TB04","canonicalUrl":"https://aoctrl.com/siemens/3RW4046-1TB04","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4046-1TB04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4046-1TB04 soft starter, 80 A at 40 °C, S3 frame size, 600 V insulation voltage, screw-type terminals, 50/60 Hz.","salesMarkdown":"## 80 A at 40 °C — the rating that governs the panel The 3RW4046-1TB04: That 40 °C base is the typical unventilated enclosure ceiling — if your panel runs hotter, the usable current drops by roughly 9 % per 10 °C rise. It carries a 600 V insulation voltage rating (pollution degree 3 per IEC 60947-4-2), which covers 480 V and 575 V line supplies common in North American and European industrial plants. ## Mounting and clearance — S3 frame realities The S3 frame measures 170 mm high, 70 mm wide, and 190 mm deep. It mounts via screw and snap-on to DIN rail — the snap-on lets you pre-wire the panel and clip the unit in last. Clearance matters: 60 mm above, 40 mm below, and 30 mm at the side for airflow. Without an additional fan, the mounting surface must stay within ±10° of vertical and ±10° tilt. With the optional fan, the envelope opens to ±90° rotation and ±22.5° tilt front/back. ## Terminal capacity and wiring Main circuit terminals accept screw-type connections: 2x (10 … 70 mm²) stranded or 2x (10 … 50 mm²) finely stranded, plus 2x (7 … 1/0) AWG for the main contacts. Maximum motor cable length is 300 m — long enough for most pump and conveyor runs, but if you're feeding a motor 400 m away, plan on an output reactor or derating the cable capacitance. ## Protection and control features Built-in motor overload protection and intrinsic device protection are standard. The adjustable current limitation (20 % minimum load) lets you tune the starting torque to the load — useful for soft-starting high-inertia fans or conveyors without tripping upstream breakers. The unit uses thyristor-based soft-start technology — no inside-delta circuit option on this variant. The derating temperature threshold is 40 °C — above that, the continuous current rating steps down as shown in the spec table.","metaTitle":"Siemens 3RW4046-1TB04 SIRIUS Soft Starter, 80 A, S3 Frame","metaDescription":"Siemens 3RW4046-1TB04 SIRIUS soft starter, 80 A at 40 °C, S3 frame, 600 V insulation. 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 (0.5 ... 2.5 mm²)","Width":"70mm","title":"3RW4046-1TB04","Height":"170mm","Upwards":"60mm","Stranded":"2x (10 ... 70 mm²)","Downwards":"40mm","Thyristors":"Yes","At The Side":"30mm","description":"SIRIUS soft starter S3 80 A, 45 kW/400 V, 40 °C 200-480 V AC, 24 V AC/DC Screw terminals Thermistor motor protection","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":"80A","at 50 °C rated value":"73A","at 60 °C rated value":"66A","For Auxiliary Contacts":"2x (20 ... 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":"screw-type 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 (0.5 ... 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":"45kW","at standard circuit at 50 °C rated value":"50hp","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":"200 ... 480V","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%","For Auxiliary Contacts Finely Stranded With Core End Processing":"2x (20 ... 16)","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":"12W","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":"43A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$805.18","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9e5014c226494640b47cca1d31f13cc4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=524045&mlfb=3RW4046-1TB04"},"ai":{"faq":[{"question":"What is the maximum motor cable length for the 3RW4046-1TB04?","answer":"300 m. For longer cable runs, consider an output reactor or consult the application guidelines for reflected wave protection on the motor insulation."},{"question":"What compliance documentation does Siemens provide for this soft starter?","answer":"The unit is designed to IEC 60947-4-2 (pollution degree 3) with a 600 V insulation voltage rating. Standard Siemens documentation includes the declaration of conformity and product manual — request these with your RFQ."},{"question":"Can the 3RW4046-1TB04 be used in an inside-delta configuration?","answer":"No, this variant does not support inside-delta wiring. It is a standard line-connected soft starter with thyristor control."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4046-1TB04","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/3RW4046-1TB04 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}}