{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1304-5KS70-3AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1304-5KS70-3AA0","canonicalUrl":"https://aoctrl.com/siemens/3RK1304-5KS70-3AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1304-5KS70-3AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC reversing motor starter, 3RK1304-5KS70-3AA0, IP65, PROFINET/PROFIBUS DP, adjustable trip class 5/10/20/30, 100 kA SCCR at 400 V.","salesMarkdown":"The Siemens SIMATIC 3RK1304-5KS70-3AA0 is a reversing motor starter with a bypass circuit, rated for direct-on-line starting at 400 V AC and 2 A. It carries a 100 kA SCCR at 400 V, so it can be installed on fault-current-capable distribution without requiring upstream current-limiting fuses for coordination. The IP65 enclosure means this unit lives on the machine, not in a clean panel — it takes washdown and airborne particulates common in food-and-bev or packaging lines. Trip class is field-adjustable between CLASS 5, 10, 20, and 30. That range covers fast-acting protection for short-cyclic loads (CLASS 5) through slower curves for high-inertia starts (CLASS 30). The reversing contactor pair is built in — no external interlocking required for direction change, and the unit supports reverse starting natively. PROFINET and PROFIBUS DP are both on board, so this starter talks directly to a SIMATIC S7-1200 or S7-1500 controller without a separate gateway. The 2-byte input and 2-byte output process image carries status and control for the reversing pair. Four digital inputs are available via M12 socket for local pushbuttons or sensors. Mounting is screw-fix to a backplate or machine frame — not DIN rail. The 230 × 110 × 160 mm (H × W × D) footprint fits a standard junction-box gland plate; plan for M20 or PG16 cable entries. Mounting position is vertical or horizontal, so it adapts to tight machine cavities. The supply voltage is 24 V DC nominal (20.4 to 28.8 V range), which matches standard control-voltage rails in most industrial cabinets. Power dissipation is 3.168 W with or without the bypass circuit engaged, so no special ventilation is needed in a sealed enclosure. Environmental ratings: IP65 protects against hose-directed water and dust ingress. Shock resistance is 15 g for 11 ms, vibration resistance is 2 g — both within typical machine-mount expectations for conveyors, packaging equipment, and material-handling cells.","metaTitle":"Siemens SIMATIC 3RK1304-5KS70-3AA0 Motor Starter, Reversing,","metaDescription":"Siemens SIMATIC 3RK1304-5KS70-3AA0 reversing motor starter. IP65, PROFINET/PROFIBUS DP, adjustable trip class 5-30, 100 kA SCCR at 400 V. Current production. Sourced to order again","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","title":"3RK1304-5KS70-3AA0","Height":"230 mm","Trip Class":"CLASS 5, 10, 20 and 30 adjustable","description":"ET 200pro ERSE/RSSE HF electronic reversing starter electronic (soft-) switching Full motor protection consisting of: electronic overload protection + thermistor 400 V 3 AC/0.9 kW 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":"3.168 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":"3.168 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":"$488.95","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b93530823976c283e08d7242957f089b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=131131&mlfb=3RK1304-5KS70-3AA0"},"ai":{"faq":[{"question":"What is the depth of this motor starter?","answer":"The depth is 160 mm, with a width of 110 mm and height of 230 mm. Mounting is screw-fix to a backplate or machine frame."},{"question":"What fieldbus protocols does it support?","answer":"It supports both PROFINET and PROFIBUS DP natively, with a 2-byte input and 2-byte output process image for status and control."},{"question":"What is the short-circuit current rating (SCCR)?","answer":"The SCCR is 100,000 A at 400 V AC. This allows installation on fault-current-capable distribution without requiring upstream current-limiting fuses for coordination."},{"question":"Can this starter be used in washdown environments?","answer":"Yes, the IP65 enclosure protects against hose-directed water and dust ingress, making it suitable for food-and-bev or packaging lines where washdown is routine."},{"question":"What trip classes are available?","answer":"The trip class is field-adjustable between CLASS 5, 10, 20, and 30, covering fast-acting protection through slow curves for high-inertia starts."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1304-5KS70-3AA0","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/3RK1304-5KS70-3AA0 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}}