{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1303-6DS74-3AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1303-6DS74-3AA0","canonicalUrl":"https://aoctrl.com/siemens/3RK1303-6DS74-3AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1303-6DS74-3AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RK1 reversing starter, order code 3RK1303-6DS74-3AA0, solid-state switching, 12 A at AC-3 400 V, 100 kA SCCR, IP65, PROFIBUS DP, 4 digital inputs, 24 V DC.","salesMarkdown":"## Reversing starter with integrated PROFIBUS DP for distributed motor control The Siemens 3RK1303-6DS74-3AA0 is a SIRIUS 3RK1 reversing starter with solid-state switching contacts, designed for distributed motor control in industrial automation. It integrates a PROFIBUS DP communication interface, four parameterizable digital inputs, and full motor protection into a single IP65-rated enclosure. The IP65 protection class allows deployment in washdown or dusty environments without a separate enclosure — the housing and connectors withstand hose-directed water and airborne particulates typical of food-and-bev or material-handling lines. ## Dimensions, connectivity, and mounting The unit measures 250 mm high, 130 mm wide, and 125 mm deep. It connects via hybrid plugs and sockets per ISO 23570 for the main energy infeed and load-side outgoing feeder, plus a hybrid socket for communication transmission. The supply voltage line-side uses a hybrid plug; digital input signals terminate at two M12 sockets. Operating voltage is rated 400 to 500 V AC, with a DC supply voltage of 24 V (permissible range 20.4 to 28.8 V). The minimum operating frequency is 1 cycle per hour, reflecting its design for intermittent reversing duty rather than continuous jogging. Substance prohibited substance date is 05/01/2012, confirming RoHS compliance from that date forward. The part uses fuse-based short-circuit protection and provides full motor protection.","metaTitle":"Siemens 3RK1303-6DS74-3AA0 Reversing Starter, 12 A AC-3, IP6","metaDescription":"Siemens 3RK1303-6DS74-3AA0 reversing starter, rated 12 A at AC-3 400 V, 100 kA SCCR, IP65, PROFIBUS DP. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Depth":"125 mm","Width":"130 mm","at DC":"24 ... 24 V","Height":"250 mm","Type Of Voltage":"DC","lifecycle_stage":"current","Bus Communication":"Yes","PROFINET protocol":"No","at DC rated value":"20.4 ... 28.8 V","Type Of Assignment":"1","Maximum Permissible":"28.8 V","Minimum Permissible":"20.4 V","protection class IP":"IP65","PROFIBUS DP protocol":"Yes","at 400 V rated value":"100 kA","Design Of The Product":"reversing starter","Of Auxiliary Contacts":"< 1 error per 100 million operating cycles","For Main Energy Infeed":"socket according to ISO23570","supply voltage 1 at DC":"24 ... 24 V","Number Of Digital Inputs":"4","Short Circuit Protection":"Yes","For Digital Input Signals":"2","For Digital Output Signals":"0","1 For Digital Input Signals":"M12 socket","2 For Digital Input Signals":"M12 socket","Operating Frequency Minimum":"1 1/h","brake control with 400 V AC":"No","For Supply Voltage Line-Side":"hybrid plug","Type Of The Motor Protection":"full motor protection","at AC-3 at 400 V rated value":"12 A","For Load-Side Outgoing Feeder":"socket according to ISO23570","Operating Voltage Rated Value":"400 ... 500 V","Substance Prohibitance (Date)":"05/01/2012","Digital Inputs Parameterizable":"Yes","For Communication Transmission":"hybrid socket","Of The Communication Interface":"hybrid plug","Design Of The Switching Contact":"solid-state","Digital Outputs Parameterizable":"No","For Supply Voltage Transmission":"hybrid socket","Design Of Short-Circuit Protection":"fuse","Ambient Temperature During Operation":"-20 ... +40 °C","Product Component Motor Brake Output":"No","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 ... 28.8 V","design of the interface PROFINET protocol":"No","with low demand rate according to SN 31920":"50 %","protocol is supported AS-Interface protocol":"No","with high demand rate according to SN 31920":"75 %","operating power at AC-3 at 400 V rated value":"5 500 W","At The Manufacturer-Specific Device Interface":"M12 socket","Type Of Voltage Of The Control Supply Voltage":"DC","Type Of Electrical Connection For Main Current Circuit":"tab terminals","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"2.4 ... 12 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=73744&mlfb=3RK1303-6DS74-3AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1303-6DS74-3AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1303-6DS74-3AA0","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/3RK1303-6DS74-3AA0 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}}