{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2115-0EH15-1FB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2115-0EH15-1FB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2115-0EH15-1FB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2115-0EH15-1FB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2115-0EH15-1FB4 direct online starter, size S00, 90 W at 400 V AC-3, Class 10, 24 V DC coil, spring-loaded terminals, for 60 mm busbar systems.","salesMarkdown":"## SIRIUS direct online starter for 60 mm busbar panels The 3RA2115-0EH15-1FB4: It ships as a pre-assembled kit: a 3RT2015-2FB41 contactor, a 3RA2911-2AA00 link module, a 3RV2011-0EA25 circuit-breaker, and an 8US1251-5DT11 busbar adapter — everything needed to snap onto a 60 mm busbar system and wire the motor branch. The control coil is 24 V DC, matching the standard industrial control voltage found in most PLC cabinets and safety circuits. ## Trip Class 10 and overload protection — what it means for motor starting The magnetic short-circuit trip handles the instantaneous fault; the electromechanical contactor breaks the load current. This two-stage protection (thermal + magnetic) is the standard approach for motor branch circuits per IEC 60947-4-1. The operating frequency is 50/60 Hz — no derating needed between the two. ## Panel integration — busbar snap-on and wiring Mounts vertically on 60 mm busbar systems via the supplied busbar adapter — the fastening method is snap-on, no tools needed for the mechanical attachment. The dimensions are 45 mm wide, 155 mm deep, and 260 mm tall, fitting a standard S00 feeder footprint. Both main current and auxiliary/control circuits use spring-loaded terminals — push-in for solid or ferruled stranded wire, no screw tightening. Clearance requirements: 50 mm upwards, 20 mm forwards, 20 mm at the side, 10 mm downwards, 0 mm backwards. An auxiliary switch can be added (product extension auxiliary switch: Yes), allowing feedback to the PLC or safety relay for status monitoring. ## Environmental limits and operating envelope Operates in ambient temperatures from -20 to +60 °C with relative humidity 10 to 95% — suitable for most indoor industrial panels without climate control. Storage and transport range is -50 to +80 °C. Temperature compensation is built into the overload relay across the -20 to +60 °C range, so the trip curve stays accurate without manual adjustment. No stock-holding claim is made; the part is procured per RFQ from the supply chain.","metaTitle":"Siemens 3RA2115-0EH15-1FB4 SIRIUS Direct Starter","metaDescription":"Siemens 3RA2115-0EH15-1FB4 SIRIUS direct online starter, 90 W at 400 V AC-3, Class 10, 24 V DC coil, spring terminals, for 60 mm busbars.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"155 mm","Width":"45 mm","title":"3RA2115-0EH15-1FB4","Height":"260 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 0.28...0.40 A 24 V DC Spring-type terminal for 60 mm busbar systems (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":"for snapping onto 60 mm busbar systems","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":"90 W","Design Of The Product":"for 60 mm busbars","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)","Of The Supplied Busbar Adapter":"8US1251-5DT11","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":"3RV2011-0EA25","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":"0.3 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":"0.28 ... 0.4 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5561a285dab783267c123a0d2277a10d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=554177&mlfb=3RA2115-0EH15-1FB4"},"ai":{"faq":[{"question":"What is the 3RA2115-0EH15-1FB4 used for?","answer":"It is a direct online motor starter for switching and protecting small three-phase motors up to 90 W at 400 V AC-3. The Class 10 overload protection handles standard induction motor starting, and the magnetic short-circuit trip clears faults. It snaps onto 60 mm busbar systems in control panels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2115-0EH15-1FB4","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/3RA2115-0EH15-1FB4 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}}