{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4435-2BC36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4435-2BC36","canonicalUrl":"https://aoctrl.com/siemens/3RW4435-2BC36","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4435-2BC36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4435-2BC36 soft starter, 232 A at 40 °C, 690 V insulation voltage, inside-delta circuit, screw fixing, 270 mm depth.","salesMarkdown":"## What the 232 A rating means for your motor load The Siemens 3RW4435-2BC36 SIRIUS soft starter is rated 232 A at 40 °C. The thyristors manage the starting surge during ramp-up. Derate to 203 A at 50 °C and 173 A at 60 °C if the panel ambient runs hot; the 40 °C derating temperature is the baseline, so above that the thyristor junction temperature climbs and the unit sheds capacity. ## Inside-delta wiring — what it changes The 3RW4435-2BC36 supports inside-delta circuit configuration, which drops the current through each soft starter phase to 58 % of the motor full-load current — a 232 A unit in inside-delta can control a motor drawing up to 400 A line current, effectively doubling the motor size the same frame can handle. Inside-delta wiring requires six motor leads (not the standard three) and changes the thyristor voltage stress — the 690 V insulation voltage rating covers the higher phase-to-phase voltage the thyristors see in this topology. Screw fixing to a vertical mounting surface, rotatable ±90° and tiltable ±22.5° front-to-back — gives flexibility for tight enclosures but the 270 mm depth, 170 mm width, and 200 mm height need a backplate that clears the gland plate. Clearance requirements: 100 mm above, 75 mm below, 5 mm at the sides — the 5 mm side gap is tight; adjacent devices or busbars need that minimum to avoid heat buildup from the thyristor stack. ## Wiring and connection notes Main current circuit accepts busbar connection or cable: stranded 25–120 mm², finely stranded 16–95 mm², or solid 2x (0.25–1.5 mm²) for the auxiliary contacts. Maximum wire length to the motor is 500 m — beyond that, voltage drop and cable capacitance can cause nuisance tripping on the thyristor gate drive. Adjustable current limitation and motor overload protection are built in, with an external reset input and a display for fault signals — no separate overload relay needed for most applications.","metaTitle":"Siemens 3RW4435-2BC36 SIRIUS Soft Starter, 232A, 690V","metaDescription":"Siemens 3RW4435-2BC36 SIRIUS soft starter, 232A at 40°C, 690V insulation voltage, inside-delta capable. Current lifecycle stage, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Soft Starters"],"specifications":{"Depth":"270mm","Solid":"2x (0.25 ... 1.5 mm²)","Width":"170mm","title":"3RW4435-2BC36","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 spring-type terminals!!! Phased-out product!!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5535-2HA16<<","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 (24 ... 16)","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":"spring-loaded 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 (0.25 ... 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%","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/7cd68436bb540c44c66952fa131705f9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=280576&mlfb=3RW4435-2BC36"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4435-2BC36","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/3RW4435-2BC36 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}}