{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK4320-3NQ51-0BA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK4320-3NQ51-0BA2","canonicalUrl":"https://aoctrl.com/siemens/3RK4320-3NQ51-0BA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RK4320-3NQ51-0BA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RK4320-3NQ51-0BA2 motor starter MCU for AS-Interface, direct starter, 10 A at 400 V AC-3, CLASS 10 trip, IP54, 205 x 245 x 215 mm.","salesMarkdown":"## AS-Interface motor starter for distributed control The 3RK4320-3NQ51-0BA2: The control supply is 20.4–26.4 V DC, and the unit draws power from the AS-Interface bus — no separate 24 V supply needed for the logic, though the motor brake output (if used) requires its own feed. ## Panel fit and environmental limits Dimensions are 205 mm deep, 245 mm wide, 215 mm tall — the width is the critical panel cutout dimension; depth includes the bus connector and cable exit. Rated IP54, so it tolerates dust and splash in cabinet-free or light-washdown areas, but not hose-down or submersion. Operating ambient is -25 to +50 °C, which covers most indoor industrial environments without derating. RoHS compliance date is 05/01/2012 (substance prohibitance), meaning it meets EU RoHS and REACH requirements for current installations.","metaTitle":"Siemens 3RK4320-3NQ51-0BA2 SIRIUS Motor Starter","metaDescription":"Siemens 3RK4320-3NQ51-0BA2 SIRIUS motor starter, direct starter, 10 A at 400 V AC-3, AS-Interface bus, IP54, current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"205 mm","Width":"245 mm","Height":"215 mm","Trip Class":"CLASS 10","Type Of Voltage":"DC","lifecycle_stage":"current","Bus Communication":"Yes","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","PROFINET protocol":"No","Product Brand Name":"SIRIUS","Type Of Assignment":"1","Product Designation":"motor starter MCU for AS-Interface","protection class IP":"IP54","PROFIBUS DP protocol":"No","Design Of The Product":"direct starter","Number Of Digital Inputs":"2","Short Circuit Protection":"Yes","at AC at 400 V rated value":"10 A","brake control with 24 V DC":"No","Operating Frequency Minimum":"80 1/h","brake control with 180 V DC":"No","brake control with 400 V AC":"No","brake control with 500 V DC":"No","Type Of The Motor Protection":"bimetal","at AC-3 at 400 V rated value":"10 A","Operating Voltage Rated Value":"340 ... 440 V","Substance Prohibitance (Date)":"05/01/2012","Design Of The Switching Contact":"electromechanical","Operating Frequency 1 Rated Value":"50 Hz","Operating Frequency 2 Rated Value":"60 Hz","Design Of Short-Circuit Protection":"circuit-breakers","Ambient Temperature During Operation":"-25 ... +50 °C","Product Component Motor Brake Output":"Yes","Type Of Voltage Of The Supply Voltage":"DC","reference code according to IEC 81346-2":"Q","Number Of Poles For Main Current Circuit":"3","control supply voltage at DC rated value":"20.4 ... 26.4 V","with low demand rate according to SN 31920":"50 %","protocol is supported AS-Interface protocol":"Yes","with high demand rate according to SN 31920":"75 %","operating power at AC-3 at 400 V rated value":"4 kW","Product Extension Braking Module For Brake Control":"No","Relative Negative Tolerance Of The Operating Frequency":"-10 %","Relative Positive Tolerance Of The Operating Frequency":"10 %","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals","breaking capacity maximum short-circuit current (Icu) at 400 V rated value":"50 000 A","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"7 ... 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4c3fa9b77dd8f12f3e9ff750eb0a3736.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=482850&mlfb=3RK4320-3NQ51-0BA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK4320-3NQ51-0BA2/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RK4320-3NQ51-0BA2 and get a price?","answer":"Submit your target quantity and delivery window; we confirm availability and pricing from authorized Siemens distribution at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK4320-3NQ51-0BA2","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/3RK4320-3NQ51-0BA2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}