{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1303-5CS41-1AA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1303-5CS41-1AA3","canonicalUrl":"https://aoctrl.com/siemens/3RK1303-5CS41-1AA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1303-5CS41-1AA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RK1303-5CS41-1AA3 reversing starter, 9 A AC-3 at 400 V, IP65, PROFIBUS DP, 100 kA SCCR, 24 V DC control, current production.","salesMarkdown":"The Siemens 3RK1303-5CS41-1AA3 is a reversing starter designed for motor control in industrial automation. It's a fully enclosed unit rated IP65, so it handles washdown environments—think food processing lines or outdoor conveyor sections where dust and moisture are daily facts. ## Field-fit and integration This starter communicates over PROFIBUS DP, not PROFINET, so it slots into existing DP networks without a gateway. The 24 V DC control supply is fed through a hybrid plug for the line side and a hybrid socket for transmission to the next device—daisy-chain the supply and bus in one connector. Two M12 sockets handle the digital inputs, both parameterizable. The load-side outgoing feeder uses an ISO 23570 socket, and the main energy infeed is the same standard. Physical dimensions are 250 mm high by 130 mm wide by 107 mm deep—that's a compact footprint for a reversing starter with integrated bus and brake control. The brake control runs at 400 V AC, so no separate contactor for the brake coil on hoist or vertical-axis applications.","metaTitle":"Siemens 3RK1303-5CS41-1AA3 reversing starter, 9 A AC-3, IP65","metaDescription":"Siemens 3RK1303-5CS41-1AA3 reversing starter, 9 A at 400 V AC-3, IP65, PROFIBUS DP, 100 kA SCCR, current lifecycle stage. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Depth":"107 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":"2","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":"Yes","For Supply Voltage Line-Side":"hybrid plug","Type Of The Motor Protection":"solid-state","at AC-3 at 400 V rated value":"9 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":"mechanical","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":"Yes","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":"4 000 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 ... 9 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=179928&mlfb=3RK1303-5CS41-1AA3","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1303-5CS41-1AA3/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this reversing starter?","answer":"AC-3 motor switching current is 9 A at 400 V. The operating voltage range is 400 to 500 V. Short-circuit current rating is 100 kA at 400 V. Control voltage is 24 V DC with a permissible range of 20.4 to 28.8 V. Protection class is IP65."},{"question":"What communication protocol does this starter use?","answer":"It uses PROFIBUS DP for fieldbus communication. It does not support PROFINET."},{"question":"Can this unit handle brake control for vertical loads?","answer":"Yes, it includes brake control with 400 V AC, which means it can directly control a brake coil on hoist or vertical-axis motors without an additional contactor."},{"question":"What are the physical dimensions of the 3RK1303-5CS41-1AA3?","answer":"Height is 250 mm, width is 130 mm, and depth is 107 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1303-5CS41-1AA3","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/3RK1303-5CS41-1AA3 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}}