{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1308-0AB00-0CP0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1308-0AB00-0CP0","canonicalUrl":"https://aoctrl.com/siemens/3RK1308-0AB00-0CP0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1308-0AB00-0CP0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC direct-on-line motor starter, 3RK1308-0AB00-0CP0, rated 1 A at 40 °C, 55 kA SCCR, PROFINET + PROFIBUS DP, pluggable in BaseUnit.","salesMarkdown":"The Siemens SIMATIC 3RK1308-0AB00-0CP0 is a direct-on-line motor starter in the 3RK1 family, designed for switching and protecting single-speed induction motors up to 1 A at 40 °C ambient. It integrates a contactor, overload relay, and PROFINET/PROFIBUS DP communication into one 30 mm-wide module that plugs into a common BaseUnit — no point-to-point wiring for the power bus. The safe state is load circuit open, and the trip class is adjustable OFF / 5 / 10, so you can match the thermal curve to the motor start profile. It draws 4 bytes of input data and 2 bytes of output data over the fieldbus, which is enough for status, control, and diagnostic feedback without eating into your PLC I/O budget. Rated 1 A at both 40 °C and 50 °C — that is the continuous current the starter can carry in a 40 °C panel without derating. If your motor FLA is 0.9 A, this is a clean fit; above 1 A you step up in the family. The minimum load is 50 % of the smallest adjustable rated current, so it will not nuisance-trip on a lightly loaded motor. ## Communication and control This starter supports PROFINET and PROFIBUS DP protocols. ON-delay is 20 ms, OFF-delay 35 to 50 ms. On-site operation is supported. Supply voltage is 20.4 to 28.8 V. Mounting can be vertical or horizontal, but horizontal requires derating per the manual. Ambient operating range is -25 to +60 °C with derating above 40 °C; storage and transport go from -40 to +70 °C. Shock resistance is 6 g for 11 ms, vibration 15 mm at 6 Hz and 2 g up to 500 Hz — typical for machine-mount near conveyors and small pumps, but not for high-vibration crushers or presses. Lifecycle stage is current. MTBF is 48 years.","metaTitle":"Siemens SIMATIC 3RK1308-0AB00-0CP0 DOL Starter, 1A, PROFINET","metaDescription":"Siemens SIMATIC 3RK1308-0AB00-0CP0 direct-on-line motor starter. Rated 1A at 40°C, 55kA SCCR, PROFINET/PROFIBUS DP. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"MTBF":"48 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 400 V rated value":"55 kA","at 500 V rated value":"55 kA","at 40 °C rated value":"1 A","at 50 °C rated value":"1 A","at 55 °C rated value":"1 A","at 60 °C rated value":"1 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","according to IEC 60947-4-2":"AC-53a: 1 A: (8-0,7: 70-32)","according to IEC 60947-4-3":"AC-51: 1 A: (1,2-10: 50-360)","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":"10 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":"1 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":"1 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":"0.3 ... 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$160.02","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/216a1e98e8d9306ecf760efa8aaf5831.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=624380&mlfb=3RK1308-0AB00-0CP0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1308-0AB00-0CP0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1308-0AB00-0CP0","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/3RK1308-0AB00-0CP0 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}}