{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4036-2BB04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4036-2BB04","canonicalUrl":"https://aoctrl.com/siemens/3RW4036-2BB04","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4036-2BB04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4036-2BB04 soft starter, Size S2, 45 A at 40 °C, 600 V insulation voltage, integrated bypass contact system, screw and snap-on mounting.","salesMarkdown":"## Rated current at ambient — the derating curve is the real spec The 3RW4036-2BB04 is rated 45 A at 40 °C, derating to 42 A at 50 °C and 39 A at 60 °C. That 6 A drop between 40 °C and 60 °C is the number that governs the motor FLA you can hang on it inside a warm panel — the 45 A figure is only valid at the lower ambient. Integrated bypass contact system means the thyristors are shorted out once the motor is up to speed, dropping the heat load in the enclosure and letting the soft starter run at the full rated current longer. Without bypass, the derating would be steeper. ## Mounting and clearance — panel fit constraints Screw and snap-on mounting onto DIN rail; the S2 frame is 55 mm wide, 160 mm high, 170 mm deep. Clearance requirements: 60 mm upwards, 40 mm downwards, 30 mm at the sides — ignore these and the forced-air convection path for the thyristor heatsink is blocked, pushing the junction temperature above the derating curve. Mounting position is restricted: with an additional fan the unit can be rotated ±90° on a vertical surface and tilted ±22.5°; without fan the rotation is limited to ±10° and tilt to ±10°. The orientation matters for the internal thermal design — forced cooling opens the envelope. ## Termination and wiring — screw terminals, dual-wire capacity The front and back clamping points accept 18... 2 AWG and 16... 2 AWG respectively. Maximum wire length to the motor is 300 m — beyond that the voltage drop on start can fool the current-sensing circuit.","metaTitle":"Siemens 3RW4036-2BB04 SIRIUS Soft Starter, 45 A, Size S2","metaDescription":"Siemens SIRIUS 3RW4036-2BB04 soft starter, 45 A at 40 °C, 600 V insulation, integrated bypass, active production. Quoted to order against BOM — request RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"Depth":"170mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"55mm","title":"3RW4036-2BB04","Height":"160mm","Upwards":"60mm","Stranded":"2x (1.5 ... 25 mm²)","Downwards":"40mm","Thyristors":"Yes","At The Side":"30mm","description":"SIRIUS soft starter S2 45 A, 22 kW/400 V, 40 °C 200-480 V AC, 24 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%","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":"45A","at 50 °C rated value":"42A","at 60 °C rated value":"39A","For Auxiliary Contacts":"2x (24 ... 14)","For Main Current Circuit":"screw-type terminals","Motor Overload Protection":"Yes","Using Both Clamping Points":"2x (16 ... 2)","Intrinsic Device Protection":"Yes","Adjustable Current Limitation":"Yes","Size Of Engine Control Device":"S2","Using The Back Clamping Point":"16 ... 2","Insulation Voltage Rated Value":"600V","Using The Front Clamping Point":"18 ... 2","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":"22kW","at standard circuit at 50 °C rated value":"30hp","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%","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":"6W","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":"23A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b41feca21cd6e5cf498f6c49bb345c30.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=432274&mlfb=3RW4036-2BB04"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4036-2BB04","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/3RW4036-2BB04 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}}