{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW3035-1AA12","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW3035-1AA12","canonicalUrl":"https://aoctrl.com/siemens/3RW3035-1AA12","factsUrl":"https://aoctrl.com/api/mcp/products/3RW3035-1AA12","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW3035-1AA12 soft starter, size S2, 38 A rated at 40 °C, 110-230 VDC control supply, integrated bypass contact system, screw-type terminals.","salesMarkdown":"The Siemens SIRIUS 3RW3035-1AA12 is a soft starter in size S2, carrying a rated operating current of 38 A at 40 °C — that's the current it delivers continuously through the thyristor stack at that ambient. Derate to 32 A at 50 °C and 27 A at 60 °C, so if the panel sits near a curing press or other heat source, size the motor load against the derated figure, not the 40 °C headline. The control supply accepts 110-230 VDC, which covers common DC bus voltages in industrial panels; no separate AC control transformer needed. An integrated bypass contact system means the thyristors are shorted out once the motor reaches full speed — the bypass carries the running current, not the semiconductors. That cuts heat dissipation in the enclosure and extends the life of the power stack. No external bypass contactor or wiring needed; it's built in. Minimum load is 9 % of the rated current — the soft starter can regulate down to about 3.4 A before the firing angle control loses precision. Below that, the motor may not start smoothly. For very small motors, oversize the starter or check the application note. Clearance: 60 mm above, 40 mm below, 30 mm at the sides for airflow and wiring access. Power wiring lands on screw-type terminals sized for 2x (1.5... 25 mm²) stranded or 2x (0.5... 2.5 mm²) solid — the larger cross-section handles the 38 A feed without doubling up. Auxiliary control wiring uses the front or back clamping points accepting 16... 2 AWG. Maximum wire length from starter to motor is 100 m; beyond that, voltage drop and reflected-wave effects on the thyristors need evaluation. Mounting position is vertical with the surface, rotatable ±10° or tiltable ±10° front-to-back. That's enough to align the display in a sloped panel door without derating.","metaTitle":"Siemens 3RW3035-1AA12 SIRIUS Soft Starter, 38 A, 110-230 VDC","metaDescription":"Siemens SIRIUS 3RW3035-1AA12 soft starter, 38 A at 40 °C, 110-230 VDC control supply, integrated bypass, size S2. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"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":"No","lifecycle_stage":"current","During Operation":"-25 ... +60°C","Fastening Method":"screw and snap-on mounting","Minimum Load [%]":"9%","Mounting Position":"With vertical mounting surface +/-10° rotatable, with vertical mounting surface +/- 10° tiltable to the front and back","Product Brand Name":"SIRIUS","Degree Of Pollution":"3, acc. to IEC 60947-4-2","Product Designation":"Soft starter","Wire Length Maximum":"100m","Derating Temperature":"40°C","Inside-Delta Circuit":"No","at 40 °C rated value":"38A","at 50 °C rated value":"32A","at 60 °C rated value":"27A","For Auxiliary Contacts":"2x (20 ... 14)","For Main Current Circuit":"screw-type terminals","Motor Overload Protection":"No","Using Both Clamping Points":"2x (16 ... 2)","Intrinsic Device Protection":"No","Adjustable Current Limitation":"No","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","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","control supply voltage 1 at AC at 50 Hz":"110 ... 230V","control supply voltage 1 at AC at 60 Hz":"110 ... 230V","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":"5 500W","at standard circuit at 50 °C rated value":"5hp","number of CO contacts for auxiliary contacts":"0","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":"100%","Operating Voltage At Standard Circuit Rated Value":"115 ... 240V","at 115 V at standard circuit at 40 °C rated value":"3 000W","protection class IP on the front acc. to IEC 60529":"IP20","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":"-10%","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":"-10%","Relative Positive Tolerance Of The Operating Voltage At Standard Circuit":"10%","relative negative tolerance of the control supply voltage at AC at 50 Hz":"-10%","relative negative tolerance of the control supply voltage at AC at 60 Hz":"-10%","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%"}},"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=197341&mlfb=3RW3035-1AA12","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RW3035-1AA12/alternatives.json"},"ai":{"faq":[{"question":"Can 3RW3035-1AA12 be used with three-phase motors?","answer":"Yes, it is a three-phase soft starter with thyristors on all phases. The operating frequency is 50-60 Hz, matching standard three-phase induction motors."},{"question":"What is the equivalent of 3RW3035-1AA12?","answer":"The 3RT1044-1FB46 is a contactor, not a soft starter — it lacks the ramp-start and integrated bypass of this part. For a functional equivalent, stay within the SIRIUS 3RW30 series with the same size S2 and current rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW3035-1AA12","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/3RW3035-1AA12 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}}