{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1325-6KS41-1AA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1325-6KS41-1AA3","canonicalUrl":"https://aoctrl.com/siemens/3RK1325-6KS41-1AA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1325-6KS41-1AA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RK1325-6KS41-1AA3 reversing motor starter, 0.75 kW at 400 V, IP65, 4 digital inputs, trip class selectable 5/10/15/20, screw fixing, 159 x 294 x 215 mm.","salesMarkdown":"## What this reversing starter does differently The 3RK1325-6KS41-1AA3 is a SIRIUS reversing starter that packs forward/reverse motor control, overload protection, and four digital inputs into a single IP65 enclosure — no separate contactor pair needed for reversing duty. Rated 0.75 kW at 400 V (0.7 hp at 460/480 V, 1 hp at 575/600 V), it covers the typical small conveyor, pump, or actuator reversing job. Supply voltage is 24 V DC nominal (20.4…28.8 V range, max 31.6 V), so it drops straight onto a standard industrial 24 V bus without a separate power supply module. ## Panel fit and mounting constraints Footprint is 159 mm deep by 294 mm wide by 215 mm tall — allow clearance for the M12 plug on device addressing and the HAN Q4/2 main-circuit connector. Screw fixing to the backplate; mounting position can be vertical, horizontal, or flat. IP65 rating means the housing is dust-tight and splash-proof — suitable for on-machine or floor-level mounting where washdown or debris is present, but not for submersion. Ambient operating range is -25 to +55 °C; storage and transport tolerance -40 to +70 °C. Shock rated 12g / 11 ms, vibration 7 mm / 2g — handles the typical conveyor or machine-tool environment. ## Trip class and protection coordination Trip class is selectable between 5, 10, 15, and 20 — match the thermal overload response to the motor's start-up profile. Class 10 is the default for standard induction motors; Class 20 buys extra time for high-inertia loads like fans or centrifuges. The starter supports reverse starting directly, so the reversing contactor pair is internal — no external reversing contactor or interlock wiring required. ON-delay is 85 ms, OFF-delay 65 ms — fast enough for most sequencing but not for safety-rated instant-off; plan your logic scan cycle accordingly.","metaTitle":"Siemens 3RK1325-6KS41-1AA3 SIRIUS Reversing Starter, 0.75 kW","metaDescription":"Siemens 3RK1325-6KS41-1AA3 SIRIUS reversing starter, 0.75 kW at 400 V, IP65, active production.","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":"3RK1325-6KS41-1AA3","Height":"215 mm","Trip Class":"CLASS 5, 10, 15, 20","Recommended":"horizontal","description":"SIRIUS motor starter M200D AS-i Communication: AS-Interface Reversing starter standard Mechanical 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":"No","ON-delay time":"85 ms","During Storage":"-40 ... +70 °C","OFF-delay time":"65 ms","lifecycle_stage":"current","During Operation":"-25 ... +55 °C","During Transport":"-40 ... +70 °C","Fastening Method":"screw fixing","Reverse Starting":"Yes","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":"2","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":"reversing 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","at 575/600 V rated value":"1 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":"electromechanical","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":"4.1184 W","in switching state OFF with bypass circuit":"2.0736 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 (industrial sector)","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":"600 V","Mechanical Service Life (Switching Cycles) Of The Main Contacts Typical":"10 000 000","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/955f1c2a7026068c4f1f9113c7f70a71.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=78363&mlfb=3RK1325-6KS41-1AA3"},"ai":{"faq":[{"question":"Where can I buy 3RK1325-6KS41-1AA3 and how do I get a price?","answer":"This part is sourced to order against your BOM through independent industrial distribution."},{"question":"What is 3RK1325-6KS41-1AA3's trip class range?","answer":"Trip class is selectable between 5, 10, 15, and 20 — choose based on the motor's start-up current duration. Class 10 fits standard motors; Class 20 is for high-inertia loads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1325-6KS41-1AA3","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/3RK1325-6KS41-1AA3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T18:19:26.051Z","lastPublished":"2026-07-20T18:19:26.051Z","indexable":true}}