{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1304-5KS70-2AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1304-5KS70-2AA0","canonicalUrl":"https://aoctrl.com/siemens/3RK1304-5KS70-2AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1304-5KS70-2AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC 3RK1304-5KS70-2AA0 motor starter, direct starter design, 4 digital inputs, PROFINET and PROFIBUS DP, IP65, adjustable trip class 5/10/20/30, 160 x 110 x 230 mm.","salesMarkdown":"## Motor starter with adjustable trip class and IP65 enclosure The 3RK1304-5KS70-2AA0 is a SIMATIC-branded motor starter in a direct starter design, rated for 24 V DC supply (20.4 to 28.8 V range). It carries 4 digital inputs via M12 sockets and 2 bytes each of input and output process data, communicating over both PROFINET and PROFIBUS DP. The trip class is adjustable across CLASS 5, 10, 20, and 30 — meaning you can match the overload release curve to the motor's thermal time constant without swapping heater packs. This is useful when the same starter frame serves motors with different start-up profiles on the same line. ## Physical fit and mounting constraints Dimensions are 160 mm deep, 110 mm wide, and 230 mm tall — a compact footprint for a motor starter with integrated bypass and comms. Mounting is by screw fixing, with vertical or horizontal orientation allowed. Shock resistance is 15 g at 11 ms, vibration resistance 2 g — figures that place it in the range for machine-mounted gear on conveyors or packaging lines, not just in a fixed cabinet. The lifecycle stage is listed as current — meaning Siemens still produces this order code as an active catalogue item.","metaTitle":"Siemens 3RK1304-5KS70-2AA0 SIMATIC Motor Starter, IP65","metaDescription":"Siemens 3RK1304-5KS70-2AA0 SIMATIC motor starter with adjustable trip class 5-30, IP65 enclosure, PROFINET/DP. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Depth":"160 mm","Width":"110 mm","at DC":"24 ... 24 V","Height":"230 mm","Trip Class":"CLASS 5, 10, 20 and 30 adjustable","Direct Start":"Yes","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":"No","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":"1.944 W","protection class IP":"IP65","PROFIBUS DP protocol":"Yes","Vibration Resistance":"2g","at 400 V rated value":"100 000 A","Design Of The Product":"direct starter","For Main Energy Infeed":"socket according to ISO23570","Without Bypass Circuit":"1.944 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":"full motor protection","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":"solid-state / thyristor / 2 phases","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":"480 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":"$445.77","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/47b4da358451bb6569999e5b993585f5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=346897&mlfb=3RK1304-5KS70-2AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1304-5KS70-2AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RK1304-5KS70-2AA0?","answer":"The peer MPN 3RT1044-1FB46 is a contactor, not a motor starter with integrated I/O and fieldbus — they serve different functions. The 3RK1304-5KS70-2AA0 is a SIMATIC motor starter with PROFINET/DP and adjustable trip class; a direct functional replacement would need the same form factor, IP65 rating, and fieldbus interface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1304-5KS70-2AA0","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/3RK1304-5KS70-2AA0 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}}