{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4024-1TB04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4024-1TB04","canonicalUrl":"https://aoctrl.com/siemens/3RW4024-1TB04","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4024-1TB04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS soft starter, 3RW4024-1TB04, 12.5 A at 40 °C, 24 V control, S0 frame, screw terminals, integrated bypass.","salesMarkdown":"## SIRIUS 3RW4024-1TB04 soft starter — 12.5 A, S0 frame, integrated bypass The Siemens 3RW4024-1TB04 is a SIRIUS soft starter in the S0 frame size, rated 12.5 A at 40 °C and 24 V control voltage (50/60 Hz). It includes an integrated bypass contact system, so once the motor is up to speed the thyristors are shorted — no heat sink derating during run, and the bypass carries the full load current. That makes it a good fit for conveyors, pumps, and fans where you want a compact starter that doesn't waste panel space on an external bypass contactor. At 40 °C the unit delivers 12.5 A continuous. Minimum load is 20% of the rated current — below that the soft starter may not fire the thyristors reliably, so don't use it on a motor that draws less than about 2.5 A at 40 °C. Mounts via screw or snap-on to DIN rail. The S0 frame is 45 mm wide, 125 mm tall, 155 mm deep. Keep 60 mm free above and 40 mm below for airflow; side clearance is 15 mm. Without an external fan, the mounting surface must be within ±10° of vertical; with the optional fan you can rotate ±90° and tilt ±22.5° front/back. Storage temp range is -40 to +80 °C; operating ambient is -25 to +60 °C. Main power circuit uses screw-type terminals; auxiliary and control circuit also screw-type. Solid wire accepted: 2x (0.5... 2.5 mm²). Auxiliary contacts: 2x (20... 14 AWG). Front clamping point: 1x 8 mm² or 2x (16... 10 AWG). Maximum wire length from the starter to the motor is 300 m — beyond that, voltage drop and capacitance may cause nuisance tripping. ## Protection and control features Built-in motor overload protection and intrinsic device protection are standard. Adjustable current limitation lets you set the starting torque profile. External reset input is provided. Insulation voltage rated 600 V. A red LED indicates fault status.","metaTitle":"Siemens 3RW4024-1TB04 SIRIUS Soft Starter, 12.5 A, 24 V, S0","metaDescription":"Siemens 3RW4024-1TB04 SIRIUS soft starter, 12.5 A at 40 °C, 24 V control, S0 frame, screw terminals, integrated bypass. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"Depth":"155mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"45mm","Height":"125mm","Upwards":"60mm","Downwards":"40mm","Thyristors":"Yes","At The Side":"15mm","During Storage":"-40 ... +80°C","External Reset":"Yes","lifecycle_stage":"current","During Operation":"-25 ... +60°C","Fastening Method":"screw and snap-on mounting","Minimum Load [%]":"20%","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":"12.5A","at 50 °C rated value":"11A","at 60 °C rated value":"10A","For Auxiliary Contacts":"2x (20 ... 14)","For Main Current Circuit":"screw-type terminals","Motor Overload Protection":"Yes","Intrinsic Device Protection":"Yes","Adjustable Current Limitation":"Yes","Size Of Engine Control Device":"S0","Insulation Voltage Rated Value":"600V","Using The Front Clamping Point":"1x 8, 2x (16 ... 10)","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":"5.5kW","at standard circuit at 50 °C rated value":"7.5hp","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":"2W","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":"5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$380.00","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=318095&mlfb=3RW4024-1TB04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RW4024-1TB04/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RW4024-1TB04 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for firm pricing and lead time."},{"question":"What is the rated current of 3RW4024-1TB04?","answer":"12.5 A at 40 °C, derating to 11 A at 50 °C and 10 A at 60 °C. Minimum load is 20% of the rated current."},{"question":"Does 3RW4024-1TB04 have an integrated bypass?","answer":"Yes, the integrated bypass contact system shorts the thyristors once the motor is at speed, eliminating heat sink derating during run."},{"question":"What compliance documentation is available for 3RW4024-1TB04?","answer":"The product is designed to IEC 60947-4-2 (pollution degree 3) and carries the SIRIUS brand with standard Siemens compliance documentation. Specific RoHS/REACH/UL declarations are available on request with an RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4024-1TB04","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/3RW4024-1TB04 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}