{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1325-6KS71-0AA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1325-6KS71-0AA3","canonicalUrl":"https://aoctrl.com/siemens/3RK1325-6KS71-0AA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1325-6KS71-0AA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS direct motor starter, 3RK1325-6KS71-0AA3, IP65, AS-Interface, 24 VDC supply, 0.75 kW at 400 V, trip classes 5/10/15/20.","salesMarkdown":"The Siemens 3RK1325-6KS71-0AA3 is a SIRIUS direct motor starter — a self-contained motor-starting and protection unit designed for distributed automation. It's a direct starter, meaning it connects the motor straight across the line for full-voltage starting, with no reversing capability. The IP65 enclosure means this unit is built for standalone mounting right at the motor or on the machine frame, not tucked inside a central control cabinet. It handles washdown environments and dust ingress without an additional enclosure. Power rating is 0.75 kW at 400 V (0.7 hp at 460/480 V), which sizes it for small pumps, fans, conveyors, or agitators. The supply voltage is 24 VDC nominal (20.4 to 28.8 V range), so it pulls control power from a standard 24 VDC bus — common in modern machine builds. Trip class is selectable among CLASS 5, 10, 15, and 20. This is the maximum time in seconds the overload relay allows before tripping at a locked-rotor condition. Class 10 is the standard for most general-purpose motor starting; Class 5 is tighter for submersible pumps or compressors that must clear fast; Class 20 gives more headroom for high-inertia loads like centrifuges or fans that take longer to come up to speed. The fact that all four are available on one unit means you can tune the protection to the load without swapping hardware. Four digital inputs and one digital output are onboard, all communicating over AS-Interface. That's enough for start/stop, a feedback signal, and a couple of limit-switch or sensor inputs — typical for a standalone motor cell. The AS-Interface protocol means it connects directly to an AS-i master without a separate I/O block, saving a slice in the fieldbus chain. Mounting is screw fixing, and the unit can be installed vertical, horizontal, or flat — useful when you're fitting it into tight machine frames or retrofitting into existing panels. Dimensions are 294 mm wide by 215 mm high by 159 mm deep, so plan for that footprint on the mounting plate. Vibration resistance is 7 mm / 2g; shock resistance is 12g for 11 ms — robust enough for machine-mounted duty on presses or stamping equipment.","metaTitle":"Siemens 3RK1325-6KS71-0AA3 SIRIUS Motor Starter, IP65, AS-In","metaDescription":"Siemens SIRIUS 3RK1325-6KS71-0AA3 direct motor starter. IP65, AS-Interface, 24 VDC, 0.75 kW at 400 V. Trip classes 5/10/15/20. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Depth":"159 mm","Width":"294 mm","at DC":"20.4 ... 28.8 V","title":"3RK1325-6KS71-0AA3","Height":"215 mm","Trip Class":"CLASS 5, 10, 15, 20","Recommended":"horizontal","description":"SIRIUS motor starter M200D AS-i Communication: AS-Interface DOL starter Standard Electronic switching AC-3, 0.75KW / 400 V 0.15 A...2.00 A Electronic overload protection Thermistor: THERMOCLICK / PTC with brake contact 400 V AC 4 DI / 1 DO AS-i Han Q4/2 - Han Q8/0","Direct Start":"Yes","ON-delay time":"25 ms","During Storage":"-40 ... +70 °C","OFF-delay time":"35 ms","lifecycle_stage":"current","During Operation":"-25 ... +55 °C","During Transport":"-40 ... +70 °C","Fastening Method":"screw fixing","Reverse Starting":"No","Shock Resistance":"12g / 11 ms","Mounting Position":"vertical, horizontal, flat","On-Site Operation":"No","PROFINET protocol":"No","at DC rated value":"20.4 ... 28.8 V","Product Brand Name":"SIRIUS","Type Of Assignment":"1","Degree Of Pollution":"3","Maximum Permissible":"31.6 V","Minimum Permissible":"26.5 V","Product Designation":"Motor starters","protection class IP":"IP65","PROFIBUS DP protocol":"No","Vibration Resistance":"7 mm / 2g","at 400 V rated value":"0.75 kW","at 500 V rated value":"750 W","AS-Interface protocol":"Yes","Design Of The Product":"direct starter","For Device Addressing":"M12 plug","supply voltage 1 at DC":"24 V","For Main Current Circuit":"plug according to ISO 23570, HAN Q4/2","Number Of Digital Inputs":"4","at 460/480 V rated value":"0.7 hp","For Digital Input Signals":"4","Number Of Digital Outputs":"1","For Digital Output Signals":"1","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":"Yes","brake control with 400 V AC":"Yes","brake control with 500 V DC":"No","1 For Digital Output Signals":"M12 socket","For Supply Voltage Line-Side":"M12 plug","In Standby Mode Of Operation":"100 mA","Type Of The Motor Protection":"full motor protection","at AC-3 at 400 V rated value":"2 A","Operating Voltage Rated Value":"200 ... 440 V","Substance Prohibitance (Date)":"07/01/2006","Digital Inputs Parameterizable":"Yes","Insulation Voltage Rated Value":"500 V","Design Of The Switching Contact":"solid-state / thyristor / 2 phases","Digital Outputs Parameterizable":"Yes","For Auxiliary And Control Circuit":"connector","Between Main And Auxiliary Circuit":"400 V","Design Of Short-Circuit Protection":"circuit-breakers","Product Function Bus Communication":"Yes","Relative Humidity During Operation":"10 ... 95 %","supply voltage 1 at DC rated value":"30 V","Product Component Motor Brake Output":"Yes","Surge Voltage Resistance Rated Value":"6 000 V","Between Control And Auxiliary Circuit":"24 V","EMC immunity according to IEC 60947-1":"corresponds to degree of severity 3, ambience A (industrial sector)","Type Of Voltage Of The Supply Voltage":"DC","due to burst according to IEC 61000-4-4":"2 kV network connection / 1 kV control connection","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","in switching state ON with bypass circuit":"2.2176 W","in switching state OFF with bypass circuit":"1.9872 W","protocol is supported AS-Interface protocol":"Yes","Control Circuit Interface To Parallel Wiring":"No","At The Manufacturer-Specific Device Interface":"optical interface","Type Of Voltage Of The Control Supply Voltage":"DC","EMC emitted interference according to IEC 60947-1":"CISPR11, ambience A (group 2)","Product Extension Braking Module For Brake Control":"No","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","product function control circuit interface with IO link":"No","Type Of Electrical Connection Of The Communication Interface":"M12 plug","full-load current (FLA) for 3-phase AC motor at 480 V rated value":"1.6 A","operating voltage at AC at 60 Hz according to CSA and UL rated value":"480 V","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"0.15 ... 2 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2c88f037e7b7fa38189d238fbb6989d5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=530926&mlfb=3RK1325-6KS71-0AA3"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"Width is 294 mm, height is 215 mm, depth is 159 mm. Mounting is by screw fixing, and the unit can be installed vertical, horizontal, or flat."},{"question":"What trip classes does this starter support?","answer":"It supports CLASS 5, 10, 15, and 20, selectable on the device. This lets you match the overload protection to the motor load characteristics without changing hardware."},{"question":"What communication protocol does this unit use?","answer":"It uses AS-Interface protocol for communication. It does not support PROFIBUS DP or PROFINET."},{"question":"What is the power rating at 400 V?","answer":"Rated at 0.75 kW at 400 V, and 0.7 hp at 460/480 V. Supply voltage for the control circuit is 24 VDC (20.4 to 28.8 V range)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1325-6KS71-0AA3","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/3RK1325-6KS71-0AA3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:41:02.429Z","lastPublished":"2026-07-20T14:41:02.429Z","indexable":true}}