{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4422-3BC36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4422-3BC36","canonicalUrl":"https://aoctrl.com/siemens/3RW4422-3BC36","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4422-3BC36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4422-3BC36 soft starter, 50 A at 40 °C, 690 V insulation voltage, 115 V control supply, integrated bypass contact system.","salesMarkdown":"The Siemens 3RW4422-3BC36 is a SIRIUS soft starter rated for 50 A at 40 °C, with an insulation voltage of 690 V and a control supply of 115 V at both 50 and 60 Hz. It uses thyristors for the ramp-up and includes an integrated bypass contact system that switches the motor to line power once at speed, which cuts heat dissipation in the panel and extends the life of the semiconductor stack. The minimum load is 8% of the rated current, meaning it handles lightly loaded conveyors or pumps without dropping out. The 690 V insulation voltage means it can be used on 400 V or 480 V systems with plenty of headroom, and it meets pollution degree 3 per IEC 60947-4-2, which is the standard for industrial environments with conductive dust or humidity. The inside-delta circuit configuration is supported, which lets you connect the soft starter in the motor delta loop rather than in-line. This reduces the current the unit sees by a factor of √3, effectively giving you a higher motor rating from the same device — useful when the motor FLA exceeds the soft starter's line rating. Wire length to the motor can be up to 500 m without additional output reactors, which covers most plant-floor runs. The main circuit uses box terminals accepting 10 AWG to 1/0 AWG stranded, and the auxiliary/control circuit uses spring-loaded terminals for 24 to 16 AWG — no tools needed for the control wiring. Mounting is by screw fixing, not DIN rail, so plan for a backplate or sub-panel. Mounting position is flexible: vertical surface, rotatable ±90°, and tiltable ±22.5° front-to-back, which helps when fitting into existing layouts. Clearance requirements: 100 mm above, 75 mm below, and 5 mm at the sides. The 5 mm side clearance is tight — you can pack units close together, but the top and bottom gaps are needed for airflow and cable bending radius. Storage temperature range is -25 to +80 °C, operating ambient up to 60 °C. No need to hunt for surplus or cross-reference a substitute — the 3RW4422-3BC36 is the current catalog number. The integrated bypass and overload protection mean it replaces older soft starter + contactor + overload combinations in one footprint.","metaTitle":"Siemens 3RW4422-3BC36 SIRIUS Soft Starter, 50A at 40°C","metaDescription":"Siemens SIRIUS 3RW4422-3BC36 soft starter, 50A rated at 40°C, 690V insulation, 115V control supply. Active production. Integrated bypass. RFQ for lead time.","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":"3RW4422-3BC36","Height":"192mm","Upwards":"100mm","Stranded":"2x (4 ... 50 mm²)","Downwards":"75mm","Thyristors":"Yes","At The Side":"5mm","description":"SIRIUS soft starter Values at 575 V, 50 °C standard: 26 A, 20 hp Inside-delta: 45 A, 40 hp 400-690 V AC, 115 V AC spring-type terminals!!! Phased-out product!!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-3HA16<<","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":"18.5kW","at standard circuit at 50 °C rated value":"20hp","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":"30kW","at inside-delta circuit at 50 °C rated value":"40hp","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":"30kW","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":"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":"$1,869.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/81efcb211c7fcacf593d8310d96c2f96.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=213835&mlfb=3RW4422-3BC36"},"ai":{"faq":[{"question":"What are the key ratings for this soft starter?","answer":"Rated 50 A at 40 °C, 45 A at 50 °C, 40 A at 60 °C. Insulation voltage 690 V. Control supply 115 V at 50/60 Hz. Integrated bypass contact system and motor overload protection are built in."},{"question":"What are the mounting dimensions and clearances?","answer":"Width 170 mm, height 192 mm, depth 270 mm. Screw fixing. Clearances: 100 mm above, 75 mm below, 5 mm at sides."},{"question":"Does it support inside-delta connection?","answer":"Yes, the inside-delta circuit is supported, allowing connection in the motor delta loop to reduce the current seen by the soft starter."},{"question":"What wire sizes does it accept?","answer":"Main circuit: box terminals for 10 AWG to 1/0 AWG stranded (2x 4 to 50 mm²). Auxiliary/control circuit: spring-loaded terminals for 24 to 16 AWG (2x 0.25 to 1.5 mm²)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4422-3BC36","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/3RW4422-3BC36 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}}