{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4454-2BC45","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4454-2BC45","canonicalUrl":"https://aoctrl.com/siemens/3RW4454-2BC45","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4454-2BC45","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4454-2BC45 soft starter, 1065 A at 40 °C, 690 V insulation voltage, 50/60 Hz, with integrated bypass, inside-delta circuit, adjustable current limitation.","salesMarkdown":"## What this soft starter delivers The 3RW4454-2BC45: It carries a 690 V rated insulation voltage (IEC 60947-4-2) and operates on 50/60 Hz mains at 230 V coil/control voltage. The integrated bypass contact system drops the thyristors out of the circuit after start, cutting heat dissipation in the cabinet for continuous running. An inside-delta circuit configuration is supported, which reduces the current seen by the soft starter to 58% of the motor FLA — useful for large motors where the starter frame size would otherwise jump a bracket. ## Protection and control features Built-in motor overload protection (class 10/20/30 adjustable) and intrinsic device protection mean the starter monitors its own thyristor junction temperature — no separate overload relay needed for the power section. Adjustable current limitation (8% minimum load) lets you set the start current between 2x and 5x FLA depending on the application. The external reset input allows remote fault clearing from a PLC or pushbutton station. A built-in display shows fault codes and operating status — no external HMI required for basic diagnostics. The unit also includes a motor brake output for applications needing DC injection braking. ## Mounting, wiring, and environment Dimensions are 640 mm high, 510 mm wide, 290 mm deep — this is a large-frame unit that needs a dedicated backplate section. Fastening is by screw fixing; the mounting position allows vertical surface with +/-90° rotation and +/-22.5° tilt forward/back. Main circuit connections are busbar, rated for 70–240 mm² stranded or 2/0–500 kcmil. Pollution degree 3 per IEC 60947-4-2 means it's rated for industrial atmospheres with conductive dust or condensation. Ambient operating range is 60 °C max; storage range is -25 to +80 °C. Clearance requirements: 100 mm above, 75 mm below, 5 mm at the sides. Sourced through authorized Siemens distribution channels. The maximum motor cable length is 500 m — plan for voltage drop on long runs.","metaTitle":"Siemens 3RW4454-2BC45 SIRIUS Soft Starter, 1065 A, 690 V","metaDescription":"Siemens SIRIUS 3RW4454-2BC45 soft starter, 1065 A at 40 °C, 690 V insulation. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Soft Starters"],"specifications":{"Depth":"290mm","Solid":"2x (0.25 ... 1.5 mm²)","Width":"510mm","title":"3RW4454-2BC45","Height":"640mm","Upwards":"100mm","Stranded":"70 ... 240 mm²","Downwards":"75mm","Thyristors":"Yes","At The Side":"5mm","description":"SIRIUS soft starter Values at 500 V, 40 °C standard: 615 A, 400 kW Inside-delta: 1065 A, 710 kW 400-600 V AC, 230 V AC spring-type terminals!!! Phased-out product!!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5552-2HA16<<","During Storage":"-25 ... +80°C","External Reset":"Yes","Finely Stranded":"50 ... 240 mm²","lifecycle_stage":"current","During Operation":"60°C","Fastening Method":"screw fixing","Minimum Load [%]":"8%","For Main Contacts":"2/0 ... 500 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":"1 065A","at 50 °C rated value":"954A","at 60 °C rated value":"847A","For Auxiliary Contacts":"2x (24 ... 16)","For Main Current Circuit":"busbar connection","Motor Overload Protection":"Yes","Intrinsic Device Protection":"Yes","Adjustable Current Limitation":"Yes","Insulation Voltage Rated Value":"690V","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":"400kW","at standard circuit at 50 °C rated value":"600hp","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":"710kW","at inside-delta circuit at 50 °C rated value":"1 050hp","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 ... 600V","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":"186W","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":"123A","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/ea02d3985891cabc690b41827c14e9c6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=225616&mlfb=3RW4454-2BC45"},"ai":{"faq":[{"question":"What is 3RW4454-2BC45's listed depth?","answer":"The depth is 290 mm. Overall dimensions are 640 mm high by 510 mm wide — a large-frame unit requiring dedicated backplate space."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4454-2BC45","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/3RW4454-2BC45 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}}