{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4434-2BC46","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4434-2BC46","canonicalUrl":"https://aoctrl.com/siemens/3RW4434-2BC46","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4434-2BC46","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4434-2BC46 soft starter, 196 A at 40 °C, 50-60 Hz, 690 V insulation voltage, inside-delta circuit, screw fixing, 270 mm depth.","salesMarkdown":"## 196 A at 40 °C — the rating that governs the motor start The 3RW4434-2BC46: That 196 A figure is the continuous motor current it can handle in standard duty — not the locked-rotor or inrush, but the full-load current of the motor it starts. Derate to 173 A at 50 °C and 152 A at 60 °C — if the panel ambient runs hot, the current ceiling drops accordingly. The 40 °C derating temperature is the baseline; above that, apply the curve. Inside-delta circuit wiring is supported, which reduces the line current by a factor of √3 compared to standard in-line connection — useful for larger motors where the starter current rating can be matched to the phase current rather than line current. ## Panel fit and clearance — what the 270 mm depth means for a retrofit The 3RW4434-2BC46 measures 270 mm deep, 170 mm wide, 200 mm high. For a retrofit into an existing panel, the 270 mm depth is the critical dimension — most standard enclosures have at least 300 mm internal depth, but a shallow backpanel or a door-mounted component can conflict. Clearance requirements: 100 mm upwards, 75 mm downwards, 5 mm at the sides. The 5 mm side clearance is tight — adjacent components can sit close, but the top and bottom ventilation paths must be respected. Main circuit connection accepts stranded wire 25-120 mm² or finely stranded 16-95 mm², plus busbar connection. Auxiliary contacts use solid wire 2x 0.25-1.5 mm². The wire length to the motor can be up to 500 m — adequate for most pump and conveyor layouts. ## Protection and control — built-in overload and adjustable current limit Motor overload protection is integrated — no separate overload relay needed. The minimum load threshold is 8%, meaning it can start lightly loaded motors without nuisance tripping. Adjustable current limitation lets you set the starting current between the motor's no-load and locked-rotor values. Intrinsic device protection safeguards the thyristors against over-temperature and over-current — the soft starter manages its own thermal budget. An external reset input allows remote fault recovery from a PLC or pushbutton. The display version shows fault signals for on-site diagnostics. Pollution degree 3 per IEC 60947-4-2 means it's rated for industrial environments with conductive dust or occasional condensation — standard for most factory-floor panels.","metaTitle":"Siemens 3RW4434-2BC46 SIRIUS Soft Starter, 196 A at 40 °C","metaDescription":"Siemens 3RW4434-2BC46 SIRIUS soft starter, 196 A at 40 °C, 50-60 Hz, 690 V insulation, inside-delta capable, motor overload protection.","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":"3RW4434-2BC46","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: 113 A, 110 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 >>3RW5534-2HA16<<","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":"196A","at 50 °C rated value":"173A","at 60 °C rated value":"152A","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":"75kW","at standard circuit at 50 °C rated value":"75hp","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":"132kW","at inside-delta circuit at 50 °C rated value":"150hp","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":"110kW","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":"64W","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":"22A","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/5af2a63a64ad49b680ca2498ce8a1c53.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=436331&mlfb=3RW4434-2BC46"},"ai":{"faq":[{"question":"What is the 3RW4434-2BC46's current rating at different temperatures?","answer":"Rated 196 A at 40 °C, derated to 173 A at 50 °C, and 152 A at 60 °C. The 40 °C baseline is the derating temperature; above that, the continuous current capacity drops linearly."},{"question":"Does the 3RW4434-2BC46 include motor overload protection?","answer":"It also includes intrinsic device protection for the thyristors and adjustable current limitation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4434-2BC46","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/3RW4434-2BC46 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}}