{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4423-1BC46","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4423-1BC46","canonicalUrl":"https://aoctrl.com/siemens/3RW4423-1BC46","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4423-1BC46","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW4423-1BC46 soft starter, 62 A at 40 °C, 230 V, 50/60 Hz, integrated bypass, thyristor switching, adjustable current limitation.","salesMarkdown":"The Siemens SIRIUS 3RW4423-1BC46 is a soft starter designed to ramp AC induction motors up to speed, reducing inrush current and mechanical stress during start-up. It switches the motor phases via thyristors and includes an integrated bypass contact system that, once the motor is at full speed, shorts out the thyristors to eliminate heat dissipation and extend service life. The unit carries a rated operational current of 62 A at 40 °C, derating to 55 A at 50 °C and 50 A at 60 °C, and is rated for a supply voltage of 230 V at both 50 and 60 Hz. If the ambient inside the enclosure runs to 50 °C, the available current drops to 55 A; at 60 °C, it is 50 A. That derating starts at 40 °C, so any installation above that temperature must be factored into the motor full-load current. The unit measures 192 mm high, 170 mm wide, and 270 mm deep, and uses screw fixing for mounting. Clearance requirements are 100 mm above, 75 mm below, and 5 mm at the sides for airflow and cable access. The main current circuit uses box terminals accepting stranded wire from 4 to 50 mm² (or 10 to 1/0 AWG using both clamping points). ## Protection and Control Features Built-in motor overload protection and intrinsic device protection are standard. The adjustable current limitation lets you set the start current between 8% and 100% of the rated current, which is useful for soft-starting pumps or conveyors that need a gentle ramp. An external reset input and a fault display are provided. The unit supports inside-delta circuit wiring, which allows a smaller frame size for a given motor current by connecting the soft starter in the delta legs rather than the line.","metaTitle":"Siemens SIRIUS 3RW4423-1BC46 Soft Starter, 62 A, 230 V, Inte","metaDescription":"Siemens SIRIUS 3RW4423-1BC46 soft starter, 62 A at 40 °C, 230 V, 50/60 Hz. Integrated bypass, thyristor switching, adjustable current limit. Active production. Sourced to order.","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":"3RW4423-1BC46","Height":"192mm","Upwards":"100mm","Stranded":"2x (4 ... 50 mm²)","Downwards":"75mm","Thyristors":"Yes","At The Side":"5mm","description":"SIRIUS soft starter Values at 690 V, 40 °C standard: 36 A, 37 kW Inside-delta: only up to 600 V 400-690 V AC, 230 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":"230V","at 60 Hz rated value":"230V","at 40 °C rated value":"62A","at 50 °C rated value":"55A","at 60 °C rated value":"50A","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":"22kW","at standard circuit at 50 °C rated value":"25hp","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":"37kW","at inside-delta circuit at 50 °C rated value":"50hp","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":"37kW","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":"10W","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":"7A","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":"$2,116.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1c57187ada771901fc006e81e050a9af.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=75688&mlfb=3RW4423-1BC46"},"ai":{"faq":[{"question":"What are the key ratings for this soft starter?","answer":"It is rated at 62 A at 40 °C, 55 A at 50 °C, and 50 A at 60 °C, with a supply voltage of 230 V at 50/60 Hz and an insulation voltage of 690 V."},{"question":"What is the mounting clearance required?","answer":"The unit requires 100 mm clearance above, 75 mm below, and 5 mm at the sides for proper ventilation and cable access."},{"question":"Does it include a bypass contactor?","answer":"Yes, it has an integrated bypass contact system that shorts the thyristors after start-up to reduce heat."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4423-1BC46","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/3RW4423-1BC46 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}}