{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4454-6BC36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4454-6BC36","canonicalUrl":"https://aoctrl.com/siemens/3RW4454-6BC36","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4454-6BC36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4454-6BC36 soft starter, 1,065 A at 40°C, 690 V insulation voltage, integrated bypass contact system, inside-delta circuit capable, screw fixing.","salesMarkdown":"## 1,065 A at 40°C — the rating that governs the motor starting duty The 3RW4454-6BC36 is rated 1,065 A at 40°C ambient. That is the base current for sizing the soft starter to the motor full-load amps — not the peak inrush, but the continuous current the thyristors and bypass contacts carry once the motor is up to speed. Derate to 954 A at 50°C and 847 A at 60°C. If the panel ambient runs above 40°C — common in a packed enclosure with drives and transformers — the usable current drops. The derating temperature is 40°C; above that, apply the curve. Insulation voltage is 690 V rated, operating frequency 50/60 Hz. The minimum load is 8% — it will start lightly loaded conveyors or pumps without the motor drawing enough current to keep the thyristors in conduction. ## Integrated bypass — one less component to panel-build The bypass contact system is built in. Once the motor reaches full speed, the thyristors are shorted by mechanical contacts, eliminating the continuous heat load of the semiconductors. No external bypass contactor to wire, size, or fail. Inside-delta circuit is supported. For a delta-connected motor, wiring the soft starter inside the delta legs reduces the line current by about 42% compared to the standard in-line connection. The unit handles the same motor kW at lower line amps — useful when the supply transformer or cable is the constraint. Motor overload protection is onboard, plus intrinsic device protection and adjustable current limitation. The display shows fault signals. External reset is available. ## Panel fit — 640 x 510 x 290 mm, screw-fixed Height 640 mm, width 510 mm, depth 290 mm. Fastening method is screw fixing — not DIN-rail snap-on at this frame size. The mounting position allows vertical surface with +/-90° rotation and +/-22.5° tilt front/back. Clearance: 100 mm upwards, 75 mm downwards, 5 mm at the sides. The side clearance is tight — adjacent devices or enclosure walls must respect that 5 mm for airflow and arc flash containment. Pollution degree 3 per IEC 60947-4-2 means it is rated for conductive dust environments typical of cement, woodworking, or foundry panels. Main current circuit connection is busbar. Power wiring: stranded 70–240 mm², finely stranded 50–240 mm², or AWG 2/0–500 kcmil. Maximum motor cable length is 500 m. The 3RW4454-6BC36 is a SIRIUS-branded soft starter. It includes a motor brake output component and a display for fault signaling. Compliance documentation (RoHS, REACH, UL, IEC) is provided with the shipment per Siemens standard.","metaTitle":"Siemens 3RW4454-6BC36 Soft Starter, 1,065 A, SIRIUS","metaDescription":"Siemens 3RW4454-6BC36 SIRIUS soft starter, 1,065 A at 40°C, 690 V insulation, integrated bypass. Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Soft Starters"],"specifications":{"Depth":"290mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"510mm","title":"3RW4454-6BC36","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 Screw terminals!!! Phased-out product!!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5552-6HA16<<","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 (20 ... 14)","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":"screw-type 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 (0.5 ... 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%","For Auxiliary Contacts Finely Stranded With Core End Processing":"2x (20 ... 16)","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/cadbc928b72bbb7e8ecd816e63a74d9d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=144059&mlfb=3RW4454-6BC36"},"ai":{"faq":[{"question":"What is the rated current of 3RW4454-6BC36 at different temperatures?","answer":"Rated 1,065 A at 40°C, derated to 954 A at 50°C, and 847 A at 60°C. The derating temperature threshold is 40°C."},{"question":"Does 3RW4454-6BC36 include a built-in bypass contactor?","answer":"Yes, the integrated bypass contact system is standard. No external bypass contactor is needed, which saves panel space and wiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4454-6BC36","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/3RW4454-6BC36 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}}