{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1308-0BC00-0CP0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1308-0BC00-0CP0","canonicalUrl":"https://aoctrl.com/siemens/3RK1308-0BC00-0CP0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1308-0BC00-0CP0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC reversing starter, 3RK1308-0BC00-0CP0, 3 A at 40 °C, 55 kA SCCR at 400/500 V, PROFINET + PROFIBUS DP, pluggable base unit.","salesMarkdown":"## Reversing starter with integrated safety and fieldbus The Siemens SIMATIC 3RK1308-0BC00-0CP0 is a reversing motor starter rated 3 A at 40 °C, with an SCCR of 55 kA at both 400 V and 500 V — that means it can interrupt a fault current up to 55 kA without upstream damage, sized for high-fault industrial panels. It integrates a 4 via 3DI/LC module, meaning four digital inputs plus a load circuit interface for direct motor control and diagnostics. The safe state is load circuit open, so on a trip or safety demand the power contacts drop and isolate the motor. Trip class is adjustable OFF / 5 / 10, letting you match the overload curve to the motor's thermal capacity — Class 10 for standard induction motors, Class 5 for fast-acting protection on short-time rated loads. ON-delay is 20 ms, OFF-delay 35–50 ms — fast enough for reversing service where direction change needs a dead time to prevent phase-to-phase shorting. Minimum load is 50 % of the smallest adjustable rated current, so don't undersize for a lightly loaded motor or the overload won't trip correctly. ## Fieldbus and I/O mapping Supports both PROFINET and PROFIBUS DP protocols. I/O data is 4 bytes of inputs and 2 bytes of outputs. Fastening method is pluggable in a BaseUnit. Mounting position is vertical or horizontal with derating. Storage and transport range -40 to +70 °C. Vibration resistance is 15 mm at 6 Hz, 2 g up to 500 Hz; shock resistance 6 g for 11 ms — robust for conveyor and machine-tool environments. Clearance above and below is 50 mm each for ventilation and wiring access.","metaTitle":"Siemens SIMATIC 3RK1308-0BC00-0CP0 Reversing Starter, 3 A, P","metaDescription":"Siemens SIMATIC 3RK1308-0BC00-0CP0 reversing motor starter, 3 A rated at 40 °C, 55 kA SCCR at 400 V, PROFINET/PROFIBUS DP. MTBF 47 a. Current lifecycle stage. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"MTBF":"47 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":"Reversing starter","Reverse Starting":"Yes","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":"Reversing starter","Overvoltage Category":"III","PROFIBUS DP protocol":"Yes","Vibration Resistance":"15 mm to 6 Hz; 2g to 500 Hz","at 230 V rated value":"0.25 hp","at 400 V rated value":"55 kA","at 500 V rated value":"55 kA","at 40 °C rated value":"3 A","at 50 °C rated value":"3 A","at 55 °C rated value":"3 A","at 60 °C rated value":"3 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":"0.1 hp","at 200/208 V rated value":"0.5 hp","at 220/230 V rated value":"0.5 hp","at 460/480 V rated value":"1.5 hp","according to IEC 60947-4-2":"AC-53a: 3 A: (8-0,7: 70-32)","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":"30 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":"3 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":"3 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":"0.9 ... 3 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$215.90","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=624384&mlfb=3RK1308-0BC00-0CP0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1308-0BC00-0CP0/alternatives.json"},"ai":{"faq":[{"question":"What is the MTBF of 3RK1308-0BC00-0CP0?","answer":"Listed MTBF is 47 a — roughly 47 years mean time between failures under specified conditions."},{"question":"What does the '4 via 3DI/LC module' note mean?","answer":"It means the module has four digital inputs and a load circuit interface — you get three dedicated DI channels plus one combined DI/LC for direct motor control and feedback."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1308-0BC00-0CP0","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/3RK1308-0BC00-0CP0 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}}