{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4036-1TB05","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4036-1TB05","canonicalUrl":"https://aoctrl.com/siemens/3RW4036-1TB05","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4036-1TB05","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4036-1TB05 soft starter, Size S2, 45 A at 40 °C, 50/60 Hz, screw-type terminals, integrated bypass.","salesMarkdown":"## What the 45 A rating means for your motor circuit The Siemens 3RW4036-1TB05 is a SIRIUS soft starter rated 45 A at 40 °C — that is the continuous motor current it can handle in a standard 40 °C panel environment. The 45 A figure applies at 50/60 Hz, meaning it works on either line frequency without a derate. The integrated bypass contact system means that after the start ramp the thyristors are shorted out, eliminating heat dissipation in the power section during run. That keeps the enclosure cooler and lets the soft starter handle continuous duty without oversized heatsinking. The adjustable current limitation lets you set the start current anywhere above the minimum load of 20%, which is useful for gentle starts on conveyors or pumps where mechanical shock matters. Motor overload protection is built in, so you do not need a separate overload relay for the motor branch circuit. Intrinsic device protection covers the soft starter itself against overtemperature and overcurrent faults. The red fault signal display gives a clear visual at the cabinet door when the unit trips. ## Mounting and wiring in the panel Size S2 means the physical footprint is 55 mm wide, 160 mm tall, and 170 mm deep. Clearance requirements: 60 mm above, 40 mm below, 30 mm at the sides. Main circuit connections use screw-type terminals. The power wiring accepts 2x (1.5... 25 mm²) stranded or 2x (0.5... 2.5 mm²) solid conductors. Auxiliary control wiring uses 2x (20... 14) AWG. Maximum motor cable length is 300 m — beyond that, reflected-wave stress on the motor insulation becomes a concern even with a soft starter.","metaTitle":"Siemens 3RW4036-1TB05 Soft Starter, SIRIUS, 45A at 40°C","metaDescription":"Siemens 3RW4036-1TB05 SIRIUS soft starter, 45A rated at 40°C, 50/60Hz, screw terminals, integrated bypass. Current production. Quoted to order.","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","Height":"160mm","Upwards":"60mm","Stranded":"2x (1.5 ... 25 mm²)","Downwards":"40mm","Thyristors":"Yes","At The Side":"30mm","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","during storage acc. to IEC 60721":"1K6 (only occasional condensation), 1C2 (no salt mist), 1S2 (sand must not get inside the devices), 1M4","For Auxiliary And Control Circuit":"screw-type terminals","during operation acc. 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 acc. to IEC 60721":"2K2, 2C1, 2S1, 2M2 (max. fall height 0.3 m)","Product Component Motor Brake Output":"No","reference code acc. to DIN EN 61346-2":"Q","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":"Yes","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","touch protection on the front acc. to IEC 60529":"finger-safe, for vertical contact from the front","continuous operating current [% of Ie] at 40 °C":"115%","Operating Voltage At Standard Circuit Rated Value":"400 ... 600V","protection class IP on the front acc. to IEC 60529":"IP20","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":"-20%","relative negative tolerance of the control supply voltage at AC at 60 Hz":"-20%","relative positive tolerance of the control supply voltage at AC at 50 Hz":"20%","relative positive tolerance of the control supply voltage at AC at 60 Hz":"20%","Adjustable Motor Current For Motor Overload Protection Minimum Rated Value":"23A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=241544&mlfb=3RW4036-1TB05","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RW4036-1TB05/alternatives.json"},"ai":{"faq":[{"question":"How do I wire and install Siemens 3RW4036-1TB05 soft starter?","answer":"Mount on DIN rail or with screws. Main circuit wiring accepts 2x (1.5 to 25 mm²) stranded or 2x (0.5 to 2.5 mm²) solid. Auxiliary control wiring uses 2x (20 to 14) AWG. Allow 60 mm clearance above, 40 mm below, and 30 mm at the sides. Maximum motor cable length is 300 m."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4036-1TB05","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/3RW4036-1TB05 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}