{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4036-1BB05","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4036-1BB05","canonicalUrl":"https://aoctrl.com/siemens/3RW4036-1BB05","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4036-1BB05","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4036-1BB05 soft starter, size S2, 45 A at 40 °C, integrated bypass, adjustable current limitation, screw-type terminals, 55 mm wide.","salesMarkdown":"The Siemens SIRIUS 3RW4036-1BB05 is a size S2 soft starter rated for 45 A at 40 °C, 42 A at 50 °C, and 39 A at 60 °C, operating on 50/60 Hz supplies at 24 V control voltage. It includes an integrated bypass contact system and thyristors for smooth motor acceleration. The adjustable current limitation lets you dial in the starting current to match the load, and the minimum load of 20 % means it handles light loads without dropping out. ## Mounting & Terminals Fastens with screw and snap-on mounting to a DIN rail. The main current circuit uses screw-type terminals; the auxiliary contacts accept solid wire 2x (0.5 to 2.5 mm²) and stranded 2x (1.5 to 25 mm²). The back clamping point takes 16 to 2 AWG, front clamping point 18 to 2 AWG. Overall width is 55 mm, height 160 mm, depth 170 mm. Clearance: 60 mm upwards, 40 mm downwards, 30 mm at the side. Mounting position: with an additional fan, the unit can be rotated ±90° on a vertical surface or tilted ±22.5° front/back; without a fan, rotation and tilt are limited to ±10°. That's tight — if you're packing a panel without forced airflow, plan for that 10° envelope. ## Protection & Environment Rated insulation voltage 600 V. Derating starts at 40 °C — at 60 °C the current rating drops to 39 A. Motor overload protection is onboard, and intrinsic device protection is included. The fault signal is a red LED display. External reset is supported. Maximum motor wire length is 300 m. Not designed for inside-delta circuit configuration.","metaTitle":"Siemens 3RW4036-1BB05 SIRIUS Soft Starter, 45 A, Size S2","metaDescription":"Siemens SIRIUS 3RW4036-1BB05 soft starter, 45 A at 40 °C, size S2, integrated bypass, adjustable current limit, active production. Screw terminals, 55 mm wide.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"Depth":"170mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"55mm","title":"3RW4036-1BB05","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, 30 kW/500 V, 40 °C 400-600 V AC, 24 V AC/DC Screw 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 (20 ... 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":"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":"No","at standard circuit at 40 °C rated value":"30kW","at standard circuit at 50 °C rated value":"40hp","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":"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%","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":"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":"$814.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b5e797d9d5b9456a855558a302ebc38e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=272863&mlfb=3RW4036-1BB05"},"ai":{"faq":[{"question":"What are the key current ratings at different temperatures?","answer":"45 A at 40 °C, 42 A at 50 °C, and 39 A at 60 °C. Derating begins above 40 °C."},{"question":"What is the physical size and mounting clearance?","answer":"Width 55 mm, height 160 mm, depth 170 mm. Clearance: 60 mm above, 40 mm below, 30 mm to the side. Mounting is screw and snap-on to DIN rail."},{"question":"Does it include an integrated bypass?","answer":"Yes, the integrated bypass contact system is standard, which reduces heat dissipation after the motor reaches full speed."},{"question":"What terminal types does it use?","answer":"Screw-type terminals for the main current circuit. Auxiliary contacts accept solid 2x (0.5–2.5 mm²) and stranded 2x (1.5–25 mm²). Back clamping point 16–2 AWG, front 18–2 AWG."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4036-1BB05","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/3RW4036-1BB05 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}}