{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2115-0KE15-1FB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2115-0KE15-1FB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2115-0KE15-1FB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2115-0KE15-1FB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2115-0KE15-1FB4 direct online starter, size S00, 370 W at 400 V AC-3, Class 10, screw and snap-on DIN rail mount, spring-loaded terminals.","salesMarkdown":"## Panel fit and mounting The 3RA2115-0KE15-1FB4: This is a direct online starter from the SIRIUS family, size S00, combining a contactor, a thermal overload relay, and a circuit breaker in one unit for motor protection and switching. It mounts vertically on a 35 mm DIN rail with screw and snap-on fastening, taking up 45 mm of rail width — that's a single module slot, so it wires up clean in a crowded enclosure. The supplied contactor is a 3RT2015-2FB41, the link module is 3RA2911-2AA00, and the circuit breaker is a 3RV2011-0KA25 — all matched at the factory for coordination. You get a tested assembly, not a field-built stack. ## Rated for motor duty The overload release is thermal bimetallic, compensated for ambient temperature from -20 to +60 °C, so it won't nuisance-trip in a warm panel. The short-circuit trip is magnetic — the two work together for full motor protection. ## Terminals and wiring Main power circuit uses spring-loaded terminals — push the stripped wire in, no screw torque to check. Auxiliary and control circuits also use spring-loaded terminals, which speeds up panel wiring and keeps the connection consistent. The auxiliary switch extension is supported, so you can add feedback contacts without reworking the assembly. Operating temperature range is -20 to +60 °C, with humidity tolerance up to 95 % RH.","metaTitle":"Siemens 3RA2115-0KE15-1FB4 Direct Starter, S00","metaDescription":"Siemens SIRIUS direct online starter, size S00, 370 W rated at 400 V AC-3, Class 10 thermal overload, screw and snap-on DIN rail mount.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"97 mm","Width":"45 mm","title":"3RA2115-0KE15-1FB4","Height":"198 mm","Upwards":"50 mm","Forwards":"20 mm","Backwards":"0 mm","Downwards":"10 mm","Trip Class":"CLASS 10","At The Side":"20 mm","Rated Value":"24 ... 24 V","description":"Load feeder fuseless, Direct-on-line starting 400 V AC, Size S00 0.90...1.25 A 24 V DC Spring-type terminal for installation on standard mounting rail (also fulfills type of coordination 1) Type of coordination 2, Iq = 150 kA 1 NO (contactor) with diode (integrated)","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail","Mounting Position":"vertical","PROFIsafe protocol":"No","Product Brand Name":"SIRIUS","Type Of Assignment":"2","Product Designation":"Direct (on-line) starter","Size Of Load Feeder":"S00","PROFINET IO protocol":"No","at 400 V rated value":"370 W","Design Of The Product":"for standard rail or screw mounting","For Main Current Circuit":"spring-loaded terminals","Temperature Compensation":"-20 ... +60 °C","Of The Supplied Contactor":"3RT2015-2FB41","Of The Supplied Link Module":"3RA2911-2AA00","Size Of The Circuit-Breaker":"S00","at AC-3 rated value maximum":"690 V","Design Of The Overload Release":"thermal (bimetallic)","Design Of The Switching Contact":"electromechanical","Operating Frequency Rated Value":"50 ... 60 Hz","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2011-0KA25","degree of protection NEMA rating":"other","For Auxiliary And Control Circuit":"spring-loaded terminals","Product Extension Auxiliary Switch":"Yes","Relative Humidity During Operation":"10 ... 95 %","Surge Voltage Resistance Rated Value":"6 kV","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","protocol is supported AS-Interface protocol":"No","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","shock resistance according to IEC 60068-2-27":"6g / 11 ms","Type Of Voltage Of The Control Supply Voltage":"DC","at 400 V according to IEC 60947-4-1 rated value":"150 000 A","operational current at AC-3 at 400 V rated value":"1.1 A","Mechanical Service Life (Switching Cycles) Of Contactor Typical":"30 000 000","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"0.9 ... 1.25 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/905c51f17a322781bafb67784fb0ff2c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=553875&mlfb=3RA2115-0KE15-1FB4"},"ai":{"faq":[{"question":"Where can I buy 3RA2115-0KE15-1FB4 and how do I get a price?","answer":"This part is sourced through independent industrial distribution channels. No stock-holding claim is made here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2115-0KE15-1FB4","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/3RA2115-0KE15-1FB4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}