{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4435-6BC36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4435-6BC36","canonicalUrl":"https://aoctrl.com/siemens/3RW4435-6BC36","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4435-6BC36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4435-6BC36 soft starter, 232 A at 40 °C, 690 V insulation voltage, 50/60 Hz, inside-delta circuit, screw fixing, 270 mm depth.","salesMarkdown":"## Rated current and thermal derating — the real capacity The 3RW4435-6BC36 is rated 232 A at 40 °C ambient. The derating temperature threshold is 40 °C — above that, the continuous current capability falls linearly. For a panel builder, this means the soft starter's actual capacity in a warm enclosure is lower than the 232 A headline; the ventilation and ambient inside the cabinet govern the real ampacity. ## Inside-delta wiring and adjustable current limit This unit supports inside-delta circuit configuration, which lets the soft starter control two motor windings directly while the third runs through the contactor — common for reducing the device current rating relative to the motor FLA. The adjustable current limitation lets you set the starting current between 8% and 100% of the rated value, so the same unit can be tuned to different motor loads or soft-start profiles without changing hardware. ## Mounting, wiring, and clearances The unit measures 200 mm high, 170 mm wide, and 270 mm deep. Clearance requirements: 100 mm above, 75 mm below, 5 mm at the sides. Main circuit wiring accepts stranded 25–120 mm² or busbar connection; auxiliary contacts take solid 0.5–2.5 mm². The wire length maximum is 500 m — relevant for remote start/stop stations. ## Protection and diagnostics Built-in motor overload protection and intrinsic device protection cover the soft starter's own thyristors against overcurrent and overtemperature. The display version shows fault signals, and an external reset input allows remote clearing of trip conditions without opening the panel. Pollution degree 3 per IEC 60947-4-2 means it tolerates conductive dust and humidity in industrial environments.","metaTitle":"Siemens 3RW4435-6BC36 SIRIUS Soft Starter, 232 A, 690 V","metaDescription":"Siemens 3RW4435-6BC36 SIRIUS soft starter, 232 A at 40°C, 690 V insulation voltage. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Soft Starters"],"specifications":{"Depth":"270mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"170mm","title":"3RW4435-6BC36","Height":"200mm","Upwards":"100mm","Stranded":"25 ... 120 mm²","Downwards":"75mm","Thyristors":"Yes","At The Side":"5mm","description":"SIRIUS soft starter Values at 575 V, 50 °C standard: 117 A, 100 hp Inside-delta: 203 A, 200 hp 400-690 V AC, 115 V AC Screw terminals!!! Phased-out product!!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5535-6HA16<<","During Storage":"-25 ... +80°C","External Reset":"Yes","Finely Stranded":"16 ... 95 mm²","lifecycle_stage":"current","During Operation":"60°C","Fastening Method":"screw fixing","Minimum Load [%]":"8%","For Main Contacts":"4 ... 250 kcmil","Mounting Position":"with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° 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":"500m","Derating Temperature":"40°C","Inside-Delta Circuit":"Yes","at 50 Hz rated value":"115V","at 60 Hz rated value":"115V","at 40 °C rated value":"232A","at 50 °C rated value":"203A","at 60 °C rated value":"173A","For Auxiliary Contacts":"2x (20 ... 14)","For Main Current Circuit":"busbar connection","Motor Overload Protection":"Yes","Using Both Clamping Points":"max. 2x 1/0","Intrinsic Device Protection":"Yes","Adjustable Current Limitation":"Yes","Using The Back Clamping Point":"6 ... 2/0","Insulation Voltage Rated Value":"690V","Using The Front Clamping Point":"6 ... 2/0","Operating Frequency Rated Value":"50 ... 60Hz","Display Version For Fault Signal":"Display","Integrated Bypass Contact System":"Yes","For Auxiliary And Control Circuit":"screw-type terminals","Product Component Motor Brake Output":"Yes","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":"Yes","at standard circuit at 40 °C rated value":"90kW","at standard circuit at 50 °C rated value":"100hp","Finely Stranded Without Core End Processing":"max. 1x 50 mm², 1x 70 mm²","number of CO contacts for auxiliary contacts":"1","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"3","Type Of Voltage Of The Control Supply Voltage":"AC","at inside-delta circuit at 40 °C rated value":"160kW","at inside-delta circuit at 50 °C rated value":"200hp","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 ... 690V","at 690 V at standard circuit at 40 °C rated value":"132kW","contact rating of auxiliary contacts according to UL":"B300 / R300","Operating Voltage At Inside-Delta Circuit Rated Value":"400 ... 600V","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 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":"76W","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":"26A","Relative Negative Tolerance Of The Operating Voltage At Inside-Delta Circuit":"-15%","Relative Positive Tolerance Of The Operating Voltage At Inside-Delta Circuit":"10%"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c3eda4ceed35c38f199f038b5192cc20.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=312236&mlfb=3RW4435-6BC36"},"ai":{"faq":[{"question":"What is the rated current of 3RW4435-6BC36 at different temperatures?","answer":"232 A at 40 °C, derating to 203 A at 50 °C and 173 A at 60 °C. The derating temperature threshold is 40 °C."},{"question":"Does 3RW4435-6BC36 support inside-delta wiring?","answer":"Yes, inside-delta circuit configuration is supported, allowing reduced device current rating relative to motor FLA."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4435-6BC36","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/3RW4435-6BC36 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}}