{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4422-1BC44","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4422-1BC44","canonicalUrl":"https://aoctrl.com/siemens/3RW4422-1BC44","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4422-1BC44","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4422-1BC44 soft starter, 50 A at 40 °C, 230 V, 50/60 Hz, integrated bypass contact system, adjustable current limitation, motor overload protection, screw-type terminals, 270 x 170 x 192 mm.","salesMarkdown":"## Current derating and thermal budget — the real operating limit The 3RW4422-1BC44: The derating temperature threshold is 40 °C — above that, the continuous output current drops linearly. For a 45 A motor in a 50 °C panel, this unit holds; for a 50 A motor at 50 °C, you need the next frame up. The integrated bypass contact system carries the full load current after start, pulling the thyristors out of the circuit — this reduces heat buildup in the enclosure and lets the derating curve reflect the bypass contact rating, not the semiconductor junction. ## Protection features that reduce external component count Built-in motor overload protection and intrinsic device protection mean you can omit a separate overload relay in many schemes — the soft starter handles thermal memory and trip class internally. Adjustable current limitation lets you set the start current between the minimum load of 8 % and the unit's full rating, which helps coordinate with upstream breaker settings on high-inertia loads. The inside-delta circuit connection is supported — for six-wire motors, the soft starter connects in the delta leg, reducing the line current to 58 % of the motor FLA. This extends the usable motor size range without stepping up to a larger frame. ## Mounting, wiring, and panel fit Dimensions: 270 mm deep, 170 mm wide, 192 mm high. Screw fixing — mounts on a vertical surface with ±90° rotation and ±22.5° tilt forward/back. Clearance: 100 mm above, 75 mm below, 5 mm at the sides. Main current circuit uses box terminals accepting stranded 2x (4... 50 mm²). Maximum wire length to motor: 500 m. ## Environmental and compliance ratings Pollution degree 3 per IEC 60947-4-2 — suitable for industrial environments where conductive pollution or dry non-conductive pollution that becomes conductive due to condensation is expected. Insulation voltage rated 690 V. Operating temperature during operation: 60 °C; storage range: -25 to +80 °C.","metaTitle":"Siemens 3RW4422-1BC44 SIRIUS Soft Starter, 50 A at 40 °C","metaDescription":"Siemens 3RW4422-1BC44 SIRIUS soft starter, 50 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 (0.5 ... 2.5 mm²)","Width":"170mm","title":"3RW4422-1BC44","Height":"192mm","Upwards":"100mm","Stranded":"2x (4 ... 50 mm²)","Downwards":"75mm","Thyristors":"Yes","At The Side":"5mm","description":"SIRIUS soft starter Values at 400 V, 40 °C standard: 29 A, 15 kW Inside-delta: 50 A, 22 kW 200-460 V AC, 230 V AC Screw terminals!!! Phased-out product!!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5516-1HA14<<","During Storage":"-25 ... +80°C","External Reset":"Yes","lifecycle_stage":"current","During Operation":"60°C","Fastening Method":"screw fixing","Minimum Load [%]":"8%","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":"50A","at 50 °C rated value":"45A","at 60 °C rated value":"40A","For Auxiliary Contacts":"2x (20 ... 14)","For Main Current Circuit":"box terminal","Motor Overload Protection":"Yes","Using Both Clamping Points":"2x (10 ... 1/0)","Intrinsic Device Protection":"Yes","Adjustable Current Limitation":"Yes","Using The Back Clamping Point":"10 ... 2/0","Insulation Voltage Rated Value":"690V","Using The Front Clamping Point":"10 ... 2/0","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":"15kW","at standard circuit at 50 °C rated value":"15hp","Finely Stranded Without Core End Processing":"2x (4 ... 35 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":"22kW","at inside-delta circuit at 50 °C rated value":"30hp","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":"200 ... 460V","contact rating of auxiliary contacts according to UL":"B300 / R300","Operating Voltage At Inside-Delta Circuit Rated Value":"200 ... 460V","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":"8W","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":"5A","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":"$1,333.02","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e2fd14f03ca797e85a8bd4f6d78721b6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=195470&mlfb=3RW4422-1BC44"},"ai":{"faq":[{"question":"What is the 3RW4422-1BC44 rated current at different temperatures?","answer":"50 A at 40 °C, 45 A at 50 °C, and 40 A at 60 °C. The derating threshold is 40 °C."},{"question":"Does the 3RW4422-1BC44 include a bypass contact?","answer":"Yes, it has an integrated bypass contact system that carries the load after start, reducing thyristor heat dissipation."},{"question":"How do I get current pricing and availability for the 3RW4422-1BC44?","answer":"Submit an RFQ for current pricing and confirmed lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4422-1BC44","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/3RW4422-1BC44 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}}