{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4454-2BC36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4454-2BC36","canonicalUrl":"https://aoctrl.com/siemens/3RW4454-2BC36","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4454-2BC36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4454-2BC36 soft starter, 1065 A at 40°C, 690 V insulation voltage, 50/60 Hz, integrated bypass, inside-delta circuit.","salesMarkdown":"## 1065 A at 40°C — the rating that sizes the motor branch The 3RW4454-2BC36: This is the continuous full-load current it can start and run in standard industrial ambient — size the motor FLA against the 40°C figure, then check the derating if the enclosure runs hotter. Operating frequency is 50/60 Hz, so it works on either mains without adjustment. ## Built-in bypass and inside-delta wiring An integrated bypass contact system switches the thyristors out after start-up, eliminating the external bypass contactor and saving panel space. The inside-delta circuit option lets you wire the soft starter in the motor delta loop — this reduces the current rating needed by roughly 58% compared to in-line wiring, so a smaller unit can handle the same motor. Motor overload protection is built in, and the adjustable current limitation lets you set the start current ceiling between 2x and 5x FLA depending on the load. Minimum load is 8% — light-load applications like small pumps may need a dummy load to stay above this threshold. ## Mounting and panel fit — 510 x 640 x 290 mm The unit measures 510 mm wide, 640 mm high, and 290 mm deep. Mounting is screw fixing with a vertical mounting surface that allows ±90° rotation and ±22.5° tilt forward/backward — useful for fitting into tight enclosures or angled subpanels. Clearance requirements: 100 mm above, 75 mm below, 5 mm at the sides. Main circuit connections are busbar accepting 70–240 mm² stranded or 2/0–500 kcmil. Maximum motor cable length is 500 m — longer runs may need output reactors to prevent reflected wave spikes from damaging the motor insulation.","metaTitle":"Siemens 3RW4454-2BC36 SIRIUS Soft Starter, 1065 A at 40°C","metaDescription":"Siemens 3RW4454-2BC36 SIRIUS soft starter rated 1065 A at 40°C with integrated bypass. 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":"3RW4454-2BC36","Height":"640mm","Upwards":"100mm","Stranded":"70 ... 240 mm²","Downwards":"75mm","Thyristors":"Yes","At The Side":"5mm","description":"SIRIUS soft starter Values at 575 V, 50 °C standard: 551 A, 600 hp Inside-delta: 954 A, 1050 hp 400-690 V AC, 115 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":"115V","at 60 Hz rated value":"115V","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 ... 690V","at 690 V at standard circuit at 40 °C rated value":"630kW","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/3df103ba7cb1b33be2f472a28ad86ade.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=52450&mlfb=3RW4454-2BC36"},"ai":{"faq":[{"question":"What is the 3RW4454-2BC36's continuous current rating?","answer":"Rated 1065 A at 40°C, derating to 954 A at 50°C and 847 A at 60°C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4454-2BC36","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/3RW4454-2BC36 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}}