{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2115-4AD18-1AK6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2115-4AD18-1AK6","canonicalUrl":"https://aoctrl.com/siemens/3RA2115-4AD18-1AK6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2115-4AD18-1AK6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2115-4AD18-1AK6 non-fused motor starter, direct starter, size S00, 7.5 kW at 400 V, Class 10, thermal bimetallic overload, 45 mm width, 155.1 mm depth.","salesMarkdown":"## What this SIRIUS 3RA2 non-fused motor starter packs This is a Siemens SIRIUS 3RA2115-4AD18-1AK6 non-fused motor starter — a direct starter in size S00, built as a pre-assembled unit combining a contactor and a thermal bimetallic overload relay. It ships with the 3RT2018-1AK61 contactor and the 3RA1921-1DA00 link module already matched, plus a busbar adapter (8US1251-5DS10) for snapping onto 60 mm busbar systems — no separate component selection needed for the motor branch. ## Rated power and trip class — what they mean for motor protection For longer start times (high-inertia loads like fans or centrifuges), you'd step up to Class 20 or 30. The thermal bimetallic overload release tracks motor heating through an indirect heating element — it's ambient-compensated within the -20 to +60 °C operating range, so seasonal temperature swings in the panel won't cause nuisance trips. ## Panel fit — dimensions and mounting Width is 45 mm (size S00 standard), depth 155.1 mm, height 200 mm — the depth is the dimension to watch when laying out the enclosure depth, especially if the busbar adapter protrudes. Mounts vertically with fastening for snapping onto 60 mm busbar systems — no DIN rail required if you're using the busbar adapter. Clearance needed: 20 mm above, 10 mm below, 9 mm to the side, and zero forward or backward. Degree of pollution 3 means it's rated for conductive pollution environments typical in industrial control panels — no additional conformal coating needed for normal factory-floor conditions. For volume or blanket orders, the busbar adapter (8US1251-5DS10) and link module (3RA1921-1DA00) are included as supplied components — confirm the BOM line for the contactor (3RT2018-1AK61) is covered by this assembly.","metaTitle":"Siemens 3RA2115-4AD18-1AK6 SIRIUS Motor Starter","metaDescription":"Siemens SIRIUS 3RA2115-4AD18-1AK6 non-fused motor starter, 7.5 kW at 400 V, Class 10, thermal overload, snaps onto 60 mm busbar.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"155.1 mm","Width":"45 mm","title":"3RA2115-4AD18-1AK6","Height":"200 mm","Upwards":"20 mm","Forwards":"0 mm","Backwards":"0 mm","Downwards":"10 mm","Trip Class":"CLASS 10","At The Side":"9 mm","Rated Value":"690 V","description":"Fuseless motor starter Direct start 600VAC Size S00 11-16Amp 110/120VAC 50/60HZ screw connection For snapping onto 60 mm busbar systems Type of coordination 1 1NO+1NC (MSP) 1NO (contactor)","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"for snapping onto 60 mm busbar systems","Mounting Position":"vertical","Product Brand Name":"SIRIUS","Type Of Assignment":"1","Degree Of Pollution":"3","Product Designation":"non-fused motor starter 3RA2","Size Of Load Feeder":"S00","at 230 V rated value":"2 hp","at 400 V rated value":"7 500 W","at 480 V rated value":"14 A","at 50 Hz rated value":"93.5 ... 121 V","at 500 V rated value":"7 500 W","at 60 Hz rated value":"96 ... 132 V","at 600 V rated value":"11 A","Design Of The Product":"direct starter","at 110/120 V rated value":"1 hp","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"5 hp","at 460/480 V rated value":"10 hp","at 575/600 V rated value":"10 hp","Of The Supplied Contactor":"3RT2018-1AK61","Of The Supplied Link Module":"3RA1921-1DA00","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":"8US1251-5DS10","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":"3RV2011-4AA15","Product Extension Auxiliary Switch":"Yes","Surge Voltage Resistance Rated Value":"6 kV","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","apparent holding power of magnet coil at AC":"6.5 VA","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"2","shock resistance according to IEC 60068-2-27":"6g / 11 ms","at 400 V according to IEC 60947-4-1 rated value":"153 000 A","operational current at AC-3 at 400 V rated value":"15.5 A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals","Inductive Power Factor With The Holding Power Of The Coil":"0.25","Mechanical Service Life (Operating Cycles) Of Contactor Typical":"30 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"208 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Type Of Connectable Conductor Cross-Sections For Main Contacts Stranded":"0.5 ... 4 mm², 2x (0.75 ... 2.5 mm²)","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"11 ... 16 A","Connectable Conductor Cross-Section For Main Contacts Finely Stranded With Core End Processing":"0.5 ... 2.5 mm²"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/397106f54e55852ca9279023ffa905b4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=152774&mlfb=3RA2115-4AD18-1AK6"},"ai":{"faq":[{"question":"What are the key ratings for 3RA2115-4AD18-1AK6?","answer":"Trip Class 10 thermal bimetallic overload. Snaps onto 60 mm busbar systems. Dimensions: 45 mm wide, 155.1 mm deep, 200 mm high."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2115-4AD18-1AK6","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/3RA2115-4AD18-1AK6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}