{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4046-1TB05","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4046-1TB05","canonicalUrl":"https://aoctrl.com/siemens/3RW4046-1TB05","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4046-1TB05","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4046-1TB05 soft starter, Size S3, 80 A at 40 °C, 50/60 Hz, 600 V insulation, screw-type terminals, screw and snap-on mounting.","salesMarkdown":"## 80 A at 40 °C — the rating that governs the install The 3RW4046-1TB05 is a SIRIUS soft starter from Siemens, Size S3 frame, designed to ramp three-phase induction motors up to 80 A at a 40 °C ambient. If the panel ambient runs above 40 °C, the 73 A or 66 A line is the one to budget against the motor FLA, not the headline 80 A. Rated insulation voltage is 600 V, operating frequency 50/60 Hz, and the pollution degree is 3 per IEC 60947-4-2 — meaning it's rated for the conductive-dust and condensation environment typical of industrial control panels. ## Termination and wire range — what lands on the lugs Main power connections use screw-type terminals. The main circuit accepts stranded wire 2 x (10 … 70 mm²) and finely stranded 2 x (10 … 50 mm²); the auxiliary contacts take 2 x (20 … 14 AWG). Solid wire for the control circuit is 2 x (0.5 … 2.5 mm²). That covers everything from a 4 AWG motor feed down to a 22 AWG start signal. Mounting is screw-and-snap-on to DIN rail. The envelope is 170 mm high, 70 mm wide, 190 mm deep. Clearance above the unit is 60 mm, below 40 mm, to the side 30 mm. With the optional fan, the mounting surface can be rotated ±90° or tilted ±22.5°; without the fan, rotation and tilt are limited to ±10°. ## Protection and control — what's built in Motor overload protection is integrated — no separate overload relay needed. Intrinsic device protection (thyristor overtemperature, phase imbalance, missing phase) is also on board. Adjustable current limitation lets you set the starting current between 20 % and the full rated current. An external reset input is provided. The maximum motor cable length is 300 m — relevant when the starter sits in a central MCC and the motor is at the far end of the line.","metaTitle":"Siemens 3RW4046-1TB05 SIRIUS Soft Starter, 80 A at 40 °C","metaDescription":"Siemens 3RW4046-1TB05 SIRIUS soft starter, 80 A rated current at 40 °C, Size S3 frame. Active production, screw terminals, motor overload protection.","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":"3RW4046-1TB05","Height":"170mm","Upwards":"60mm","Stranded":"2x (10 ... 70 mm²)","Downwards":"40mm","Thyristors":"Yes","At The Side":"30mm","description":"SIRIUS soft starter S3 80 A, 55 kW/500 V, 40 °C 400-600 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","during storage acc. to IEC 60721":"1K6 (only occasional condensation), 1C2 (no salt mist), 1S2 (sand must not get inside the devices), 1M4","For Auxiliary And Control Circuit":"screw-type terminals","during operation acc. 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 acc. to IEC 60721":"2K2, 2C1, 2S1, 2M2 (max. fall height 0.3 m)","Product Component Motor Brake Output":"No","reference code acc. to DIN EN 61346-2":"Q","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":"60hp","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","touch protection on the front acc. to IEC 60529":"finger-safe, for vertical contact from the front","continuous operating current [% of Ie] at 40 °C":"115%","Operating Voltage At Standard Circuit Rated Value":"400 ... 600V","protection class IP on the front acc. to IEC 60529":"IP20","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":"-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":"43A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/839bc300891bc73f19f53b954a6d5479.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=387821&mlfb=3RW4046-1TB05"},"ai":{"faq":[{"question":"What is the rated current of 3RW4046-1TB05 at different temperatures?","answer":"The 40 °C figure is the standard derating point; use the 50 °C or 60 °C line if the panel ambient runs hotter."},{"question":"What wire sizes does the 3RW4046-1TB05 accept on the main terminals?","answer":"The screw-type main terminals accept stranded wire 2 x (10 … 70 mm²) and finely stranded 2 x (10 … 50 mm²). Auxiliary contacts accept 2 x (20 … 14 AWG)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4046-1TB05","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/3RW4046-1TB05 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}}