{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1308-0AD00-0CP0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1308-0AD00-0CP0","canonicalUrl":"https://aoctrl.com/siemens/3RK1308-0AD00-0CP0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1308-0AD00-0CP0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC direct-on-line starter, 3RK1308-0AD00-0CP0, 9 A at 40 °C, 55 kA SCCR at 400/500 V, PROFINET and PROFIBUS protocol, adjustable trip class OFF/5/10.","salesMarkdown":"The Siemens 3RK1308-0AD00-0CP0 is a SIMATIC-branded direct-on-line motor starter — a compact, fieldbus-capable unit that combines a contactor, overload relay, and communication interface in a single 30 mm-wide housing that plugs into a base unit. It is rated for 9 A at 40 °C, with a short-circuit current rating of 55 kA at both 400 V and 500 V — meaning it can safely interrupt fault currents up to that level without upstream devices needing to clear the fault first. The trip class is adjustable between OFF, 5, and 10, which lets you match the thermal curve to the motor's starting profile — set to OFF for applications where the overload is handled externally, or to 5 or 10 for standard motor protection. It supports both PROFINET and PROFIBUS DP protocols, so it drops into either a PN or a legacy DP network without a gateway. The module fastens by plugging into a base unit on the DIN rail — no separate wiring for the power bus; the base unit carries the line and load connections. Dimensions are 30 mm wide, 142 mm high, and 150 mm deep, with 50 mm clearance required above and below for ventilation and cable routing. Mounting position is vertical or horizontal, but per the manual derating applies for horizontal orientation — factor that into your thermal budget if the panel layout forces a horizontal mount. Operating temperature range is -25 to +60 °C, with derating required above 40 °C; storage and transport range extends to -40 to +70 °C. The listed MTBF of 46 a gives a mean time between failures of 46 years under stated operating conditions — a reliability figure that supports long service intervals in continuous-duty applications. The minimum load is 50 % of the smallest adjustable rated current — meaning the overload protection may not trip reliably below that threshold, so don't use this on a motor drawing less than half the set current. ON-delay time is fixed at 20 ms; OFF-delay is adjustable between 35 and 50 ms — these govern the response to start/stop commands from the fieldbus or local control. Vibration resistance is 15 mm at 6 Hz and 2 g up to 500 Hz; shock resistance is 6 g for 11 ms — suitable for mounting on machinery that sees moderate vibration, but not for high-shock environments like stamping presses without additional isolation.","metaTitle":"Siemens 3RK1308-0AD00-0CP0 SIMATIC Direct-On-Line Starter, 9","metaDescription":"Siemens 3RK1308-0AD00-0CP0 SIMATIC direct-on-line motor starter. 9 A at 40 °C, 55 kA SCCR at 400/500 V. PROFINET/PROFIBUS, adjustable trip class. Current lifecycle stage, available","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"MTBF":"46 a","Note":"4 via 3DI/LC module","Depth":"150 mm","Width":"30 mm","Height":"142 mm","Upwards":"50 mm","Downwards":"50 mm","Safe State":"Load circuit open","Trip Class":"CLASS OFF / 5 / 10 adjustable","Direct Start":"Yes","ON-delay time":"20 ms","Of The Inputs":"4 byte","During Storage":"-40 ... +70 °C","OFF-delay time":"35 ... 50 ms","Of The Outputs":"2 byte","lifecycle_stage":"current","During Operation":"-25 ... +60 °C; For derating see manual","During Transport":"-40 ... +70 °C","Fastening Method":"pluggable in BaseUnit","Minimum Load [%]":"50 %; from smallest adjustable rated current","Product Category":"Motor starter","Product Function":"Direct-on-line starter","Reverse Starting":"No","Shock Resistance":"6g / 11 ms","Mounting Position":"Vertical, horizontal (observe derating)","On-Site Operation":"Yes","PROFINET protocol":"Yes","Product Brand Name":"SIMATIC","Type Of Assignment":"1","Degree Of Pollution":"2","Maximum Permissible":"28.8 V","Minimum Permissible":"20.4 V","Product Designation":"Direct-on-line starter","Overvoltage Category":"III","PROFIBUS DP protocol":"Yes","Vibration Resistance":"15 mm to 6 Hz; 2g to 500 Hz","at 230 V rated value":"1 hp","at 400 V rated value":"55 kA","at 500 V rated value":"55 kA","at 40 °C rated value":"9 A","at 50 °C rated value":"9 A","at 55 °C rated value":"9 A","at 60 °C rated value":"9 A","For Main Energy Infeed":"Plug contact to Base Unit","Remote Firmware Update":"Yes","At Switching On Of Motor":"230 mA","Number Of Digital Inputs":"4","at 110/120 V rated value":"0.33 hp","at 200/208 V rated value":"2 hp","at 220/230 V rated value":"2 hp","at 460/480 V rated value":"5 hp","according to IEC 60947-4-2":"AC-53a: 9 A: (8-0,7: 70-32)","according to IEC 60947-4-3":"AC-51: 9 A: (1,2-10: 50-360); AC-55a: 4 A: (3-240: 40-6)","1 For Digital Input Signals":"Pluggable module - accessory","Intrinsic Device Protection":"Yes","Operating Frequency Maximum":"1 1/s","inrush current peak at 24 V":"25 A; Observe the manual for group configuration","For Supply Voltage Line-Side":"Plug contact to Base Unit","In Standby Mode Of Operation":"85 mA","Type Of The Motor Protection":"solid-state","For Load-Side Outgoing Feeder":"Plug contact to Base Unit","Operating Voltage Rated Value":"48 ... 500 V","Substance Prohibitance (Date)":"04/15/2016","supports PROFIenergy shutdown":"Yes","Ampacity When Starting Maximum":"90 A","Insulation Voltage Rated Value":"500 V","Design Of The Switching Contact":"Hybrid","supply voltage at DC rated value":"24 V","Operating Frequency 1 Rated Value":"50 Hz","Operating Frequency 2 Rated Value":"60 Hz","Between Main And Auxiliary Circuit":"500 V","Design Of Short-Circuit Protection":"fuse","Product Function Bus Communication":"Yes","Relative Humidity During Operation":"10 ... 95 %","air pressure according to SN 31205":"900 ... 1 060 hPa","Product Component Motor Brake Output":"No","Surge Voltage Resistance Rated Value":"6 kV","supports PROFIenergy measured values":"Yes","EMC immunity according to IEC 60947-1":"Class A","Type Of Voltage Of The Supply Voltage":"DC","due to burst according to IEC 61000-4-4":"2 kV","duration of inrush current peak at 24 V":"0.145 ms","reference code according to IEC 81346-2":"Q","Number Of Poles For Main Current Circuit":"3","Wire Length For Motor Unshielded Maximum":"200 m","Product Function Short Circuit Protection":"Yes","in switching state ON with bypass circuit":"3.4 W","at 500 V according to UL 60947 rated value":"100 kA","in switching state OFF with bypass circuit":"2 W","protocol is supported AS-Interface protocol":"No","For Power Supply Reverse Polarity Protection":"Yes","equipment variant according to IEC 60947-4-2":"3","operational current at AC at 400 V rated value":"9 A","EMC emitted interference according to IEC 60947-1":"class A","electrostatic discharge according to IEC 61000-4-2":"8 kV air discharge","Relative Negative Tolerance Of The Operating Frequency":"5 %","Relative Positive Tolerance Of The Operating Frequency":"5 %","Installation Altitude At Height Above Sea Level Maximum":"4 000 m; For derating see manual","Relative Symmetrical Tolerance Of The Operating Voltage":"10 %","conducted HF interference emissions according to CISPR11":"Class A for industrial environment","Relative Symmetrical Tolerance Of The Operating Frequency":"5 %","field-bound HF interference emission according to CISPR11":"Class A for industrial environment","Type Of Electrical Connection Of The Communication Interface":"Plug contact to Base Unit","full-load current (FLA) for 3-phase AC motor at 480 V rated value":"9 A","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","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"2.8 ... 9 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$99.38","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=624382&mlfb=3RK1308-0AD00-0CP0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1308-0AD00-0CP0/alternatives.json"},"ai":{"faq":[{"question":"What is the MTBF of 3RK1308-0AD00-0CP0?","answer":"The listed MTBF is 46 a (46 years) under specified operating conditions, which supports long maintenance intervals in continuous-duty applications."},{"question":"What does the '4 via 3DI/LC module' note mean?","answer":"It indicates this module provides 4 digital inputs and a load circuit (LC) interface via the 3DI/LC module designation — the unit integrates local I/O for start/stop and feedback signals without a separate I/O block."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1308-0AD00-0CP0","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/3RK1308-0AD00-0CP0 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}}