{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK4320-3AQ54-0BA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK4320-3AQ54-0BA3","canonicalUrl":"https://aoctrl.com/siemens/3RK4320-3AQ54-0BA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RK4320-3AQ54-0BA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RK4320-3AQ54-0BA3 motor starter MCU, AS-Interface, direct starter, 0.63 A at 400 V AC-3, Class 10, IP54, 205 x 245 x 215 mm.","salesMarkdown":"## AS-Interface motor starter for distributed motor control The 3RK4320-3AQ54-0BA3 is a SIRIUS motor starter MCU — a direct starter with electromechanical switching contacts, designed for AS-Interface bus communication. ## Panel fit and mounting flexibility The envelope is 205 mm deep, 245 mm wide, and 215 mm tall. IP54 rated, so it handles dust and splashing water in panel environments that aren't fully sealed — think machine-mount cabinets on a factory floor where washdown isn't direct but airborne moisture is present. ## Integrated brake control and digital I/O This starter includes a motor brake output rated for 400 V AC, which means it can directly switch an AC brake coil without an external contactor. Two digital inputs are available on the AS-Interface bus for local pushbuttons or limit switches — saves running separate sensor cables back to the PLC. Control supply is 20.4 to 26.4 V DC, standard for AS-Interface networks. The unit supports AS-Interface protocol natively — no gateway module needed between the starter and the AS-i master.","metaTitle":"Siemens 3RK4320-3AQ54-0BA3 SIRIUS Motor Starter, 0.63 A","metaDescription":"Siemens 3RK4320-3AQ54-0BA3 SIRIUS motor starter MCU for AS-Interface, 0.63 A at 400 V AC-3, Class 10 trip, IP54. Active production, quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"205 mm","Width":"245 mm","title":"3RK4320-3AQ54-0BA3","Height":"215 mm","Trip Class":"CLASS 10","description":"SIRIUS MCU motor starter Enclosure degree of protection IP54 metal Communication AS-Interface electromechanically switching Short-circuit protection with circuit breaker DOL starter Brake 400 V AC (internal) Performance class 0.63 A Motor circuit breaker with bi-metal thermal Rotary operating mechanism gray/black Connection power M screw connection Standard product","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":"0.63 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":"Yes","brake control with 500 V DC":"No","Type Of The Motor Protection":"bimetal","at AC-3 at 400 V rated value":"0.63 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":"0.2 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":"0.45 ... 0.63 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/91942f85cafd40705523e6478e3361fb.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=66224&mlfb=3RK4320-3AQ54-0BA3"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RK4320-3AQ54-0BA3?","answer":"Submit an RFQ against your BOM quantity. No stock-holding claim is made here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK4320-3AQ54-0BA3","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/3RK4320-3AQ54-0BA3 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}}