{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4422-1BC36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4422-1BC36","canonicalUrl":"https://aoctrl.com/siemens/3RW4422-1BC36","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4422-1BC36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS soft starter, 3RW4422-1BC36, 50 A (40 °C), 690 V insulation voltage, integrated bypass, thyristor switching, screw fixing.","salesMarkdown":"The Siemens 3RW4422-1BC36 is a SIRIUS-brand soft starter, built for three-phase induction motors where you need to dial back the inrush and mechanical shock of a direct-on-line start. It uses thyristors to ramp the voltage up, then an integrated bypass contact system takes over once the motor is at speed, so the thyristors aren't sitting there heating up the panel all shift long. That bypass is a real plus out here in the grease — less heat means less trouble for the gear next to it. Rated at 50 A at 40 °C, it handles a 3-phase motor up to that current, derating to 45 A at 50 °C and 40 A at 60 °C. Operating frequency is 50 to 60 Hz, and it's designed for a pollution degree of 3 per IEC 60947-4-2 — meaning it's comfortable in the typical dusty, conductive environment of a motor control center. Mounts with screw fixing — not a snap-on DIN rail job, so plan for that in the panel layout. The dimensions are 192 mm high, 170 mm wide, and 270 mm deep. That depth is worth noting if you're squeezing it into a shallow enclosure. Clearance needs: 100 mm above, 75 mm below, and just 5 mm at the sides. The mounting position is flexible — vertical surface, rotatable ±90°, tiltable ±22.5° front-to-back — so you can fit it to the available real estate. Main circuit connections use box terminals, accepting stranded wire from 4 to 50 mm² (2x conductors). The maximum wire length to the motor is 500 m — keep that in mind if you're running a long feeder from the MCC to a remote pump. ## Protection and adjustments Built-in motor overload protection is standard, so you don't always need a separate overload relay. There's also intrinsic device protection for the soft starter itself. The current limitation is adjustable — you can set the start current from a minimum load of 8% up to whatever the motor needs. An external reset input is there, handy for remote reset from a control room. If there's a fault, the display shows a fault signal, which beats chasing a blinking LED. Supports inside-delta circuit wiring — that's a configuration where you wire the soft starter inside the motor's delta connection, reducing the current the starter sees. Useful for bigger motors where you want to use a smaller frame size.","metaTitle":"Siemens 3RW4422-1BC36 SIRIUS Soft Starter, 50A at 40°C, 690V","metaDescription":"Siemens SIRIUS 3RW4422-1BC36 soft starter, 50A rated at 40°C, 690V insulation voltage, integrated bypass, thyristor switching, current in 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":"3RW4422-1BC36","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 Screw terminals!!! Phased-out product!!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-1HA16<<","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":"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%","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":"$1,869.00 – $2,922.27","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ed5507acc4f9c82d8bf8342c15b67b3b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=284933&mlfb=3RW4422-1BC36"},"ai":{"faq":[{"question":"What are the main current ratings at different temperatures?","answer":"At 40 °C it's rated 50 A, derating to 45 A at 50 °C and 40 A at 60 °C. The insulation voltage is 690 V, and the operating frequency is 50 to 60 Hz."},{"question":"What wiring does the main circuit use?","answer":"The main circuit uses box terminals accepting stranded wire from 4 to 50 mm² (2x conductors). The auxiliary and control circuit uses screw-type terminals for 0.5 to 2.5 mm² solid wire."},{"question":"What clearance is needed around the soft starter?","answer":"You need 100 mm clearance above, 75 mm below, and just 5 mm at the sides. The dimensions are 192 mm high, 170 mm wide, and 270 mm deep."},{"question":"Does it have an integrated bypass?","answer":"Yes, it has an integrated bypass contact system, so the thyristors only handle the start ramp and are bypassed during run, reducing heat in the panel."},{"question":"What protection features are built in?","answer":"It includes motor overload protection, intrinsic device protection, adjustable current limitation, and a fault display. Minimum load is 8% of rated current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4422-1BC36","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/3RW4422-1BC36 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}}