{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4422-1BC34","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4422-1BC34","canonicalUrl":"https://aoctrl.com/siemens/3RW4422-1BC34","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4422-1BC34","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4422-1BC34 soft starter, 50 A at 40 °C, 690 V insulation voltage, 50/60 Hz, integrated bypass, thyristor control, IP20, screw fixing.","salesMarkdown":"## SIRIUS 3RW44 soft starter — motor starting in the panel The Siemens 3RW4422-1BC34 is a SIRIUS 3RW44 series soft starter, designed to ramp three-phase induction motors up to speed and protect them during start. It uses thyristors to control voltage to the motor, reducing inrush current and mechanical stress on the driven load — conveyors, pumps, fans, compressors in a control panel. ## Integrated bypass and adjustable current limit An integrated bypass contact system shorts the thyristors once the motor is at full speed, eliminating the semiconductor heat load during run — the bypass carries the 50 A continuously without the 1–1.5 V forward drop of the SCRs. This keeps the enclosure temperature rise in check and lets the soft starter handle longer start cycles. Adjustable current limitation sets the maximum current the soft starter delivers during start, typically 2–5× the motor FLA depending on the load. The minimum load is 8% of the rated current — below that the motor current may be too low for the thyristor firing circuit to detect, causing a trip. Motor overload protection is built in, so no separate overload relay is needed for most installations. The intrinsic device protection covers the thyristors against overtemperature and phase loss. ## Mounting, wiring, and clearance Screw fixing to the back panel — the unit is 192 mm high, 170 mm wide, 270 mm deep. The mounting position allows vertical mounting surface with ±90° rotation and ±22.5° tilt front/back, so it fits in angled or space-constrained enclosures. Clearance around the device: 100 mm above, 75 mm below, 5 mm at the sides. Maximum motor cable length is 500 m — longer runs increase charging current that can nuisance-trip the soft starter. Pollution degree 3 per IEC 60947-4-2 means it tolerates conductive dust and humidity typical in industrial environments.","metaTitle":"Siemens 3RW4422-1BC34 SIRIUS Soft Starter, 50 A, 690 V","metaDescription":"Siemens 3RW4422-1BC34 SIRIUS soft starter, 50 A at 40 °C, 690 V insulation voltage, integrated bypass, adjustable current limit.","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":"3RW4422-1BC34","Height":"192mm","Upwards":"100mm","Stranded":"2x (4 ... 50 mm²)","Downwards":"75mm","Thyristors":"Yes","At The Side":"5mm","description":"SIRIUS soft starter Values at 460 V, 50 °C standard: 26 A, 15 hp Inside-delta: 45 A, 30 hp 200-460 V AC, 115 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":"115V","at 60 Hz rated value":"115V","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":"$2,263.14","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5443dd0951a5ac6c6bd34b7b95537fc2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=230527&mlfb=3RW4422-1BC34"},"ai":{"faq":[{"question":"How can I order 3RW4422-1BC34 or check availability?","answer":"Submit an RFQ with your target quantity and delivery window."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4422-1BC34","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/3RW4422-1BC34 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}}