{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4024-2BB15","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4024-2BB15","canonicalUrl":"https://aoctrl.com/siemens/3RW4024-2BB15","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4024-2BB15","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4024-2BB15 soft starter, size S0, 12.5 A at 40°C, 45 mm width, spring-loaded terminals, integrated bypass.","salesMarkdown":"## Size S0 frame, 45 mm wide — panel fit The 3RW4024-2BB15 is a SIRIUS soft starter in the size S0 frame, 45 mm wide, 150 mm tall, and 155 mm deep. The mounting position is flexible: with an additional fan, the unit can be rotated ±90° on a vertical surface or tilted ±22.5° front-to-back; without a fan, rotation is limited to ±10° and tilt to ±10°. ## Current ratings and thermal derating Rated operating current is 12.5 A at 40°C, derating to 11 A at 50°C and 10 A at 60°C. The derating temperature threshold is 40°C, so above that ambient the continuous current must be reduced per the published curve. The minimum load is 20% of the rated current, which means the soft starter needs at least about 2.5 A of motor current to regulate properly — below that, the thyristor firing angle may not maintain consistent conduction. ## Integrated bypass and protection features An integrated bypass contact system switches the thyristors out of the circuit once the motor reaches full speed, eliminating heat dissipation in the power semiconductors during continuous run. This extends the service life and reduces panel cooling requirements. Motor overload protection and intrinsic device protection are built in, along with adjustable current limitation. The unit also supports an external reset input for remote fault clearing. ## Termination and wiring Both the main current circuit and the auxiliary/control circuit use spring-loaded terminals — no screw tightening needed, which speeds up panel wiring and eliminates torque verification. The main circuit accepts 1x 8 mm² or 2x (16 to 10) mm² conductors; the auxiliary circuit accepts 2x (24 to 14) AWG. Maximum motor cable length is 300 m, which covers most installations without needing output reactors for reflected wave protection. ## Environmental and compliance Storage conditions per IEC 60721 include class 1K6 (occasional condensation), 1C2 (no salt mist), 1S2 (limited sand ingress), and 1M4 (mechanical vibration). Insulation voltage is rated at 600 V. ## Control supply and frequency Control supply voltage is 110 to 230 V DC, covering common industrial control voltages without needing an external power supply. Operating frequency is 50 to 60 Hz, matching global line frequencies. The unit does not support inside-delta circuit configuration and has no integrated motor brake output — these are constraints to check against the motor circuit design.","metaTitle":"Siemens 3RW4024-2BB15 SIRIUS Soft Starter, 12.5 A, Size S0","metaDescription":"Siemens 3RW4024-2BB15 SIRIUS soft starter, 12.5 A at 40°C, size S0, 45 mm wide. Active production. Quoted to order against RFQ through authorized distribution.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"Depth":"155mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45mm","title":"3RW4024-2BB15","Height":"150mm","Upwards":"60mm","Downwards":"40mm","Thyristors":"Yes","At The Side":"15mm","description":"SIRIUS soft starter S0 12.5 A, 7.5 kW/500 V, 40 °C 400-600 V AC, 110-230 V AC/DC spring-type terminals","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%","For Main Contacts":"16 ... 10, 1x 8","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 40 °C rated value":"12.5A","at 50 °C rated value":"11A","at 60 °C rated value":"10A","For Auxiliary Contacts":"2x (24 ... 14)","For Main Current Circuit":"spring-loaded 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)","control supply voltage 1 at DC":"110 ... 230V","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","control supply voltage 1 at AC at 50 Hz":"110 ... 230V","control supply voltage 1 at AC at 60 Hz":"110 ... 230V","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":"7.5kW","at standard circuit at 50 °C rated value":"10hp","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":"-15%","relative positive tolerance of the control supply voltage at DC":"10%","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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d43c43d6cdad19100b481a0982e2d6e1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=168370&mlfb=3RW4024-2BB15"},"ai":{"faq":[{"question":"What is the current rating of the 3RW4024-2BB15 at different temperatures?","answer":"The soft starter is rated 12.5 A at 40°C, 11 A at 50°C, and 10 A at 60°C. Derating begins above 40°C ambient."},{"question":"How do I get pricing and availability for the 3RW4024-2BB15?","answer":"Submit an RFQ through this listing."},{"question":"Does the 3RW4024-2BB15 have an integrated bypass?","answer":"Yes, it includes an integrated bypass contact system that shorts the thyristors after start-up, reducing heat dissipation during continuous operation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4024-2BB15","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/3RW4024-2BB15 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}}