{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1304-5KS40-3AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1304-5KS40-3AA0","canonicalUrl":"https://aoctrl.com/siemens/3RK1304-5KS40-3AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1304-5KS40-3AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC reversing motor starter, 3RK1304-5KS40-3AA0, IP65, 100 kA SCCR at 400 V, Trip Class 10, PROFINET and PROFIBUS DP, 4 digital inputs, 24 V DC.","salesMarkdown":"## Reversing starter in an IP65 can — what you're actually getting The Siemens 3RK1304-5KS40-3AA0 is a SIMATIC-brand reversing motor starter packed into an IP65 enclosure — screw-fixed, not DIN-rail, so plan for panel or machine-mount with four bolts. Trip Class 10 gives you a 10-second thermal overload window at locked-rotor current; fine for standard induction motors driving pumps or conveyors, but if you're starting high-inertia loads (centrifuges, large fans) you'll want to check the acceleration time against that curve. Digital I/O is lean — 4 inputs via M12 socket, no onboard digital outputs — so you'll need the PROFINET or PROFIBUS DP link to carry status back to the controller. The 2-byte input and 2-byte output process image is tight; plan your data mapping accordingly. Supply voltage is 24 V DC nominal, with a tolerance window of 20.4 to 28.8 V — the same range as standard 24 V control power supplies, so no special rail required. ## Integration notes — fieldbus and mounting Mounting is screw-fixed (no DIN-rail clip), so factor in four holes and a screwdriver. The enclosure measures 230 mm high, 110 mm wide, 150 mm deep — about the size of a small junction box. IP65 means it's sealed against dust and low-pressure water jets; fine for washdown zones or outdoor cabinets, but not submersible. Vibration resistance is 2g continuous, shock 15g for 11 ms — tough enough for machine-mounted duty on a press or conveyor. Fieldbus options: PROFINET and PROFIBUS DP are both on board — no option card needed. The main energy infeed uses a socket per ISO 23570, so the mating connector is standardized.","metaTitle":"Siemens 3RK1304-5KS40-3AA0 SIMATIC Reversing Motor Starter,","metaDescription":"Siemens 3RK1304-5KS40-3AA0 SIMATIC reversing motor starter, IP65, 100 kA SCCR at 400 V, Trip Class 10, PROFINET/PROFIBUS DP. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Depth":"150 mm","Width":"110 mm","at DC":"24 ... 24 V","title":"3RK1304-5KS40-3AA0","Height":"230 mm","Trip Class":"CLASS 10","description":"ET 200pro RSE HF Reversing starter High Feature Mechanical switching Electronic overload protection AC-3, 0.9 kW / 400 V 0.15 A...2.00 A without brake contact 4 DI Han Q4/2 - Han Q8/0","Direct Start":"No","Of The Inputs":"2 byte","During Storage":"-40 ... +70 °C","Of The Outputs":"2 byte","Type Of Voltage":"AC","lifecycle_stage":"current","During Operation":"-25 ... +55 °C","During Transport":"-40 ... +70 °C","Fastening Method":"screw fixing","Reverse Starting":"Yes","Shock Resistance":"15g / 11 ms","Mounting Position":"vertical, horizontal","PROFINET protocol":"Yes","at DC rated value":"20.4 ... 28.8 V","Product Brand Name":"SIMATIC","Type Of Assignment":"1","Degree Of Pollution":"3","Maximum Permissible":"28.8 V","Minimum Permissible":"20.4 V","Product Designation":"Motor starters","With Bypass Circuit":"3.888 W","protection class IP":"IP65","PROFIBUS DP protocol":"Yes","Vibration Resistance":"2g","at 400 V rated value":"100 000 A","Design Of The Product":"reversing starter","For Main Energy Infeed":"socket according to ISO23570","Without Bypass Circuit":"3.888 W","supply voltage 1 at DC":"24 ... 24 V","Number Of Digital Inputs":"4","For Digital Input Signals":"4","For Digital Output Signals":"0","at AC at 400 V rated value":"2 A","brake control with 24 V DC":"No","1 For Digital Input Signals":"M12 socket","2 For Digital Input Signals":"M12 socket","3 For Digital Input Signals":"M12 socket","4 For Digital Input Signals":"M12 socket","brake control with 180 V DC":"No","brake control with 230 V AC":"No","brake control with 400 V AC":"No","brake control with 500 V DC":"No","For Main Energy Transmission":"socket according to ISO23570","For Supply Voltage Line-Side":"via backplane bus","Type Of The Motor Protection":"solid-state","at AC-3 at 400 V rated value":"900 W","For Load-Side Outgoing Feeder":"socket according to ISO23570","Operating Voltage Rated Value":"200 ... 400 V","Substance Prohibitance (Date)":"05/01/2012","supports PROFIenergy shutdown":"Yes","Digital Inputs Parameterizable":"Yes","Insulation Voltage Rated Value":"400 V","Design Of The Switching Contact":"electromechanical","Digital Outputs Parameterizable":"No","For Supply Voltage Transmission":"via backplane bus","Design Of Short-Circuit Protection":"fuse","Product Function Bus Communication":"Yes","Product Function On-Site Operation":"Yes","Relative Humidity During Operation":"5 ... 95 %","Product Component Motor Brake Output":"No","Surge Voltage Resistance Rated Value":"6 kV","supports PROFIenergy measured values":"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 ... 28.8 V","Product Function Short Circuit Protection":"Yes","Touch Protection Against Electrical Shock":"finger-safe","design of the interface PROFINET protocol":"Yes","with low demand rate according to SN 31920":"100 FIT","protocol is supported AS-Interface protocol":"No","with high demand rate according to SN 31920":"75 %","At The Manufacturer-Specific Device Interface":"optical interface","Type Of Voltage Of The Control Supply Voltage":"DC","Type Of Electrical Connection For Main Current Circuit":"tab terminals","Installation Altitude At Height Above Sea Level Maximum":"3 500 m","Type Of Electrical Connection Of The Communication Interface":"via backplane bus","operating range relative to the operating voltage at AC at 50 Hz":"200 ... 440 V","operating voltage at AC at 60 Hz according to CSA and UL rated value":"600 V","Mechanical Service Life (Operating Cycles) Of The Main Contacts Typical":"30 000 000","Maximum Permissible Voltage For Safe Isolation Between Main And Auxiliary Circuit":"400 V","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"0.15 ... 2 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$401.32","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4766c060981cd402036aa78cb7ac2dc2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=501298&mlfb=3RK1304-5KS40-3AA0"},"ai":{"faq":[{"question":"Who supplies 3RK1304-5KS40-3AA0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for your volume and delivery needs."},{"question":"What is the SCCR of 3RK1304-5KS40-3AA0?","answer":"The short-circuit current rating is 100,000 A at 400 V AC — that's the maximum fault current the starter can safely interrupt without upstream protection needing to coordinate."},{"question":"What fieldbus protocols does this starter support?","answer":"It supports both PROFINET and PROFIBUS DP onboard — no additional communication module required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1304-5KS40-3AA0","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/3RK1304-5KS40-3AA0 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}}