{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK4320-3GQ54-0BA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK4320-3GQ54-0BA3","canonicalUrl":"https://aoctrl.com/siemens/3RK4320-3GQ54-0BA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RK4320-3GQ54-0BA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RK4320-3GQ54-0BA3 motor starter MCU for AS-Interface, direct starter, 2.5 A AC-3 at 400 V, CLASS 10, IP54, 205 x 245 x 215 mm.","salesMarkdown":"## AS-Interface motor starter with integrated brake control The 3RK4320-3GQ54-0BA3: It includes a motor brake output rated for 400 V AC, so it handles the brake coil directly without an external contactor — that's one less component to wire and stock. The control supply is 20.4-26.4 V DC, and the unit communicates over AS-Interface (no PROFIBUS or PROFINET onboard). Two digital inputs are built in for local feedback or pushbuttons. ## Panel fit and mounting flexibility The enclosure measures 205 mm deep, 245 mm wide, and 215 mm high — a compact footprint for a motor starter that includes the brake output and bus interface. IP54 rating means it's protected against dust and splashing water, suitable for control cabinets in industrial environments. Mounting is flexible: ±180° rotation possible on a vertical surface, and it can be tilted forward/backward by ±22.5° on a vertical mounting surface — useful when panel layout forces an odd orientation. Ambient operating range is -25 to +50 °C, and the unit is rated for 50/60 Hz supply with a minimum operating frequency of 80 operations per hour.","metaTitle":"Siemens 3RK4320-3GQ54-0BA3 SIRIUS Motor Starter, 2.5 A","metaDescription":"Siemens 3RK4320-3GQ54-0BA3 SIRIUS motor starter MCU for AS-Interface, direct starter, 2.5 A AC-3 at 400 V, CLASS 10 trip, IP54.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"205 mm","Width":"245 mm","title":"3RK4320-3GQ54-0BA3","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 2.50 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":"2.5 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":"2.5 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":"0.8 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","maximum short-circuit current breaking capacity (Icu) at 400 V rated value":"50 000 A","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"1.8 ... 2.5 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/de2d936a6f9a8862755a63984d684a12.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=435023&mlfb=3RK4320-3GQ54-0BA3"},"ai":{"faq":[{"question":"What is the lead time for ordering 3RK4320-3GQ54-0BA3?","answer":"Submit an RFQ for a firm commitment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK4320-3GQ54-0BA3","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/3RK4320-3GQ54-0BA3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}