{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4435-2BC46","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4435-2BC46","canonicalUrl":"https://aoctrl.com/siemens/3RW4435-2BC46","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4435-2BC46","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4435-2BC46 soft starter, 232 A at 40°C, 230 V AC, 50/60 Hz, inside-delta circuit, adjustable current limitation, motor overload protection, screw fixing, 170 x 200 x 270 mm.","salesMarkdown":"## Rated current and thermal derating — the real continuous ceiling At 40°C ambient the 3RW4435-2BC46 is rated 232 A continuous. That drops to 203 A at 50°C and 173 A at 60°C. For a motor with a 200 A FLA at 40°C, this starter has headroom; at 50°C you're at the limit. The derating temperature is 40°C — above that, the thyristor junction temperature governs the continuous current, not the nameplate. ## Inside-delta wiring — cuts the line current by 58% This soft starter supports inside-delta circuit connection. In that configuration the thyristors sit inside the motor delta windings, so the line current is 1/√3 of the motor phase current. For a 232 A motor, the line contactor and cable only need to carry about 134 A. The main circuit connection accepts busbar or cable up to 250 kcmil, with stranded wire range 25–120 mm² and finely stranded 16–95 mm². ## Motor overload and device protection — one unit, no separate relay Motor overload protection is integrated — the starter's thermal model tracks I²t and trips on overload without an external relay. Intrinsic device protection guards the thyristors against overtemperature and phase loss. The adjustable current limitation lets you set the start current from 8% up to the rated value, matching the load inertia. Minimum load is 8% of rated current — below that the motor may not accelerate reliably. ## Mounting and panel fit — 170 x 200 x 270 mm, screw-fixed Fastening is screw fixing on a vertical mounting surface. The unit can be rotated ±90° and tilted ±22.5° front-to-back. Clearances: 100 mm above, 75 mm below, 5 mm at the sides. Dimensions are 170 mm wide, 200 mm high, 270 mm deep. That's a substantial footprint — plan the enclosure depth for cable bending radius on the 120 mm² terminals. ## Environmental and compliance — pollution degree 3, 60°C operation Pollution degree 3 per IEC 60947-4-2 means the starter is rated for conductive dust and condensation typical of industrial panels. Operating temperature range is up to 60°C; storage range is -25 to +80°C. Insulation voltage rated 690 V. The display shows fault signals and an external reset input is provided.","metaTitle":"Siemens 3RW4435-2BC46 SIRIUS Soft Starter, 232 A, 230 V","metaDescription":"Siemens 3RW4435-2BC46 SIRIUS soft starter, 232 A at 40°C, 230 V, 50/60 Hz. Active production.","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":"3RW4435-2BC46","Height":"200mm","Upwards":"100mm","Stranded":"25 ... 120 mm²","Downwards":"75mm","Thyristors":"Yes","At The Side":"5mm","description":"SIRIUS soft starter Values at 690 V, 40 °C standard: 134 A, 132 kW Inside-delta: only up to 600 V 400-690 V AC, 230 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":"230V","at 60 Hz rated value":"230V","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/cc333cddce461eba26d8d5c5cede65b2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=253858&mlfb=3RW4435-2BC46"},"ai":{"faq":[{"question":"What is the rated current of 3RW4435-2BC46 at different temperatures?","answer":"At 40°C it's rated 232 A. The derating temperature threshold is 40°C."},{"question":"Does 3RW4435-2BC46 support inside-delta wiring?","answer":"Yes, it supports inside-delta circuit connection. This reduces the line current to 1/√3 of the motor phase current, allowing smaller main contactors and cables."},{"question":"What compliance documentation is available for 3RW4435-2BC46?","answer":"The starter is rated pollution degree 3 per IEC 60947-4-2 and has an insulation voltage of 690 V. Standard Siemens documentation includes the declaration of conformity and CE marking; specific RoHS/REACH/UL certificates are available on request at RFQ time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4435-2BC46","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/3RW4435-2BC46 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}}