{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4036-2BB05","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4036-2BB05","canonicalUrl":"https://aoctrl.com/siemens/3RW4036-2BB05","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4036-2BB05","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4036-2BB05 soft starter, Size S2, 45 A rated at 40 °C, 24 V AC/DC control supply, integrated bypass, screw terminals.","salesMarkdown":"The Siemens 3RW4036-2BB05 is a SIRIUS soft starter rated 45 A at 40 °C, which means it handles a standard 22 kW motor on 400 V three-phase without derating. That 45 A figure is the full-load current it can ramp up; the integrated bypass contact system takes over at speed, so the thyristors only handle the start transient — no continuous heat dissipation in the power stack during run. The 24 V AC/DC control voltage is the standard PLC-level signal, so it drops straight into a 24 VDC control cabinet without an interposing relay. Derating is straightforward: 42 A at 50 °C, 39 A at 60 °C. The minimum load of 20 % means it won't regulate properly below about 9 A — fine for a 22 kW motor, but not for a fractional-horsepower pump. Mounts via screw and snap-on to a DIN rail — Size S2 means it takes a 55 mm wide footprint, 160 mm tall, 170 mm deep. That depth includes the thyristor heat sink, so check your enclosure depth before laying out the backplane. Required clearances: 60 mm upward, 40 mm downward, 30 mm at the sides for airflow and wiring access. With an additional fan, the mounting surface can be vertical and rotated ±90° or tilted ±22.5°; without a fan, rotation and tilt are limited to ±10°. Main circuit terminals are screw-type, accepting 2x (1.5... 25 mm²) stranded or 2x (0.25... 2.5 mm²) solid. Auxiliary contact terminals accept 2x (24... 14) AWG. The front clamping point takes 18... 2 AWG, the back clamping point 16... 2 AWG. Using both clamping points on the same conductor accepts 16... 2 AWG. Maximum motor cable length is 300 m — beyond that, capacitive charging current may cause nuisance tripping on the overload protection. The adjustable current limitation lets you set the start current between roughly 2x and 5x FLA, depending on the load. An external reset input allows remote fault clearing. The red fault signal display gives a local visual indication.","metaTitle":"Siemens 3RW4036-2BB05 SIRIUS Soft Starter, 45A, 24V Control","metaDescription":"Siemens 3RW4036-2BB05 SIRIUS soft starter, 45A at 40°C, 24V AC/DC control, integrated bypass, adjustable current limit. 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":"3RW4036-2BB05","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 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":"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%","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/d9320619ab7afce3965b04b10e0587bf.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=186468&mlfb=3RW4036-2BB05"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4036-2BB05","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/3RW4036-2BB05 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}}