{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4036-2BB14","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4036-2BB14","canonicalUrl":"https://aoctrl.com/siemens/3RW4036-2BB14","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4036-2BB14","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4036-2BB14 soft starter, 45 A at 40 °C, S2 frame, 110-230 VDC control supply, integrated bypass, screw and snap-on mounting.","salesMarkdown":"## 45 A at 40 °C — what the derating curve means for your motor The 3RW4036-2BB14: At 50 °C it delivers 42 A, and at 60 °C it drops to 39 A. That 6 A spread between 40 °C and 60 °C means if your panel runs warm — say 50 °C inside a sealed enclosure — you budget for 42 A continuous, not the 45 A nameplate. The integrated bypass contact carries the motor current once the starter reaches full speed. That pulls the thyristors out of the circuit, dropping the heat load inside the enclosure during continuous run. For conveyors or pumps that run hours at a stretch, this matters more than the peak starting current. Control supply is 110-230 VDC — common for 24 VDC panels will need a DC-DC converter or a separate supply rail. The auxiliary and control circuit uses spring-loaded terminals; the main power circuit uses screw-type terminals. That split means the wireman lands the power cables with a screwdriver and the control wiring with push-in, no mixing tools. ## S2 frame — panel fit and mounting constraints The S2 frame measures 55 mm wide × 160 mm high × 170 mm deep. That 170 mm depth is the dimension that eats panel backspace — standard 200 mm deep enclosures leave 30 mm behind the starter for wiring. The solid wire range for control is 2x (0.25-2.5 mm²); stranded power wiring is 2x (1.5-25 mm²). Mounting is screw and snap-on — the DIN rail clip engages the top hat rail, and the screw holes give a secondary fix for vibration environments. Clearances: 60 mm above, 40 mm below, 30 mm at the side.","metaTitle":"Siemens 3RW4036-2BB14 SIRIUS Soft Starter, 45 A, S2 Frame","metaDescription":"Siemens 3RW4036-2BB14 SIRIUS soft starter, 45 A rated at 40 °C, S2 frame size, integrated bypass, 110-230 VDC control. Active production, sourced to order.","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":"3RW4036-2BB14","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, 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%","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":"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","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":"22kW","at standard circuit at 50 °C rated value":"30hp","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":"-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":"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/48b9f40f28d8723540e0d6e741eb2172.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=197599&mlfb=3RW4036-2BB14"},"ai":{"faq":[{"question":"What is the 3RW4036-2BB14's rated current at different temperatures?","answer":"It is rated 45 A at 40 °C, 42 A at 50 °C, and 39 A at 60 °C. The 6 A derating from 40 to 60 °C means the enclosure thermal design directly sets the usable current."},{"question":"Does the 3RW4036-2BB14 have an integrated bypass?","answer":"Yes, it has an integrated bypass contact system. Once the motor reaches full speed, the bypass closes and takes the current off the thyristors, reducing heat in the panel during continuous operation."},{"question":"What wire sizes does the 3RW4036-2BB14 accept?","answer":"Solid wire for control circuits: 2x (0.25-2.5 mm²). Stranded wire for power: 2x (1.5-25 mm²). The main power terminals are screw-type; the auxiliary and control terminals are spring-loaded."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4036-2BB14","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/3RW4036-2BB14 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}}