{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK4320-5DQ64-1BA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK4320-5DQ64-1BA3","canonicalUrl":"https://aoctrl.com/siemens/3RK4320-5DQ64-1BA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RK4320-5DQ64-1BA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing motor starter, 3RK4320-5DQ64-1BA3, for AS-Interface, solid-state motor protection, AC-3 rated 1.25 A at 400 V, Class 10, IP54.","salesMarkdown":"## What is this part and where does it fit? The Siemens 3RK4320-5DQ64-1BA3 is a SIRIUS reversing motor starter designed for AS-Interface networks. It integrates a solid-state motor protection relay (Class 10 trip class) and reversing contactor into one unit, rated for AC-3 motor duty at 1.25 A on a 400 V line. The IP54 enclosure means it's suited for panel-mount in industrial environments where dust and splash are present, but not for direct washdown. The AC-3 rating of 1.25 A at 400 V defines the maximum motor load this starter can switch under typical starting conditions (inrush up to 7–8x FLA). Class 10 trip means the overload relay will open the circuit within 10 seconds at 7.2x the set current — standard for standard-duty induction motors like pumps and small conveyors. The 340–460 V operating range covers 400 V nominal systems with tolerance. AS-Interface communication is built in, so this unit connects directly to an AS-i network without an external gateway module. Two digital inputs are available on the starter for local sensors or pushbuttons. The reversing design allows forward/reverse control of a single motor through the same AS-i node. The control supply voltage is 20.4–26.4 V DC, standard for AS-Interface power. The main circuit uses three poles. Brake control for 400 V AC motors is integrated — no separate brake contactor needed for applications like hoists or conveyors with holding brakes.","metaTitle":"Siemens 3RK4320-5DQ64-1BA3 SIRIUS Reversing Motor Starter","metaDescription":"Siemens SIRIUS 3RK4320-5DQ64-1BA3 reversing motor starter for AS-Interface. AC-3 rated 1.25 A at 400 V, Class 10, IP54. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"205 mm","Width":"290 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":"reversing starter","Number Of Digital Inputs":"2","Short Circuit Protection":"Yes","at AC at 400 V rated value":"1.25 A","brake control with 24 V DC":"No","Operating Frequency Minimum":"3 600 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":"solid-state","at AC-3 at 400 V rated value":"1.25 A","Operating Voltage Rated Value":"340 ... 460 V","Substance Prohibitance (Date)":"05/01/2012","Design Of The Switching Contact":"solid-state","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":"0.4 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":"0.32 ... 1.25 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=194087&mlfb=3RK4320-5DQ64-1BA3","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK4320-5DQ64-1BA3/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between a reversing and non-reversing SIRIUS motor starter?","answer":"A reversing starter (like this 3RK4320-5DQ64-1BA3) includes two contactors interlocked to swap motor phases, enabling forward/reverse control from one AS-i node. A non-reversing starter has a single contactor and only runs the motor in one direction."},{"question":"Where can I buy the 3RK4320-5DQ64-1BA3?","answer":"This part is sourced to order. Availability and pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK4320-5DQ64-1BA3","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/3RK4320-5DQ64-1BA3 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}}