{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4422-3BC34","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4422-3BC34","canonicalUrl":"https://aoctrl.com/siemens/3RW4422-3BC34","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4422-3BC34","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4422-3BC34 soft starter, 50 A at 40 °C, 690 V insulation voltage, 50/60 Hz, integrated bypass contactor, screw fixing, 170 x 192 x 270 mm.","salesMarkdown":"## 50 A at 40 °C — what that means for the motor circuit The 3RW4422-3BC34: The integrated bypass contactor pulls the thyristors out of the circuit once the motor is up to speed — that means no continuous heat sink load from the SCRs during run, and the bypass carries the full motor current without the semiconductor voltage drop. ## Mounting, wiring, and panel fit Screw fixing to the mounting plate — 170 mm wide, 192 mm tall, 270 mm deep. Clearance needs: 100 mm above, 75 mm below, 5 mm at the sides. The mounting position allows vertical surface with ±90° rotation and ±22.5° tilt front-to-back, so it fits in tight enclosures as long as the airflow path stays clear. Main circuit uses box terminals accepting 10 AWG to 2/0 AWG (stranded 4 to 50 mm²). Control and auxiliary circuits use spring-loaded terminals for 24 to 16 AWG solid (0.25 to 1.5 mm²). The spring-clamp on the control side saves time on the wireway — no torquing small screws. ## Protection, control, and field wiring limits Built-in motor overload protection and intrinsic device protection — the soft starter monitors both the motor and its own thyristor junction temperature. Adjustable current limitation lets you set the start current below the supply transformer or generator capacity. Minimum load is 8 % of the rated current, so it handles unloaded starts on conveyors or pumps without nuisance tripping. Maximum motor cable length is 500 m — beyond that, cable charging current can interfere with the zero-cross detection on the SCR firing. External reset input allows remote restart after a fault; the display shows the fault code for troubleshooting. Pollution degree 3 per IEC 60947-4-2 means it's rated for industrial environments with conductive dust or condensation. Inside-delta wiring is supported — that connects the soft starter in the delta legs of a six-lead motor, reducing the current through the thyristors by 58 % compared to in-line connection. Useful for larger motors where the 50 A frame would otherwise be undersized.","metaTitle":"Siemens 3RW4422-3BC34 SIRIUS Soft Starter, 50 A at 40 °C","metaDescription":"Siemens 3RW4422-3BC34 SIRIUS soft starter, 50 A rated at 40 °C, 690 V insulation voltage, integrated bypass, active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Soft Starters"],"specifications":{"Depth":"270mm","Solid":"2x (0.25 ... 1.5 mm²)","Width":"170mm","title":"3RW4422-3BC34","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 spring-type terminals!!! Phased-out product!!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5516-3HA14<<","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 (24 ... 16)","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":"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":"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%","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/08e5b065978cf1563d70ad0d46dda559.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=160781&mlfb=3RW4422-3BC34"},"ai":{"faq":[{"question":"Where can I buy 3RW4422-3BC34 and how do I get a price?","answer":"No stock-holding claim is made here."},{"question":"What compliance documentation does Siemens provide for 3RW4422-3BC34?","answer":"The soft starter carries a pollution degree 3 rating per IEC 60947-4-2, which covers industrial environments. Standard Siemens documentation includes the CE declaration of conformity and the product manual. Specific RoHS/REACH/UL status should be confirmed from the manufacturer's current compliance declarations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4422-3BC34","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/3RW4422-3BC34 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}}