{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2125-4DA27-0AP6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2125-4DA27-0AP6","canonicalUrl":"https://aoctrl.com/siemens/3RA2125-4DA27-0AP6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2125-4DA27-0AP6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2125-4DA27-0AP6 non-fused motor starter, direct starter design, Size S0, 11 kW at 400 V AC-3, Class 10 thermal overload, 45 mm wide, DIN rail mount.","salesMarkdown":"## What the 11 kW rating means for your motor load The 3RA2125-4DA27-0AP6: This SIRIUS non-fused motor starter is rated 11 000 W at 400 V AC-3, meaning it switches three-phase induction motors up to that shaft power under normal starting duty — the contactor inside (3RT2027-1AP60) and the thermal overload relay are coordinated for that load. ## Mounting and panel clearances — S0 frame, DIN rail snap-on Width is 45 mm, depth 97.1 mm, height 193.1 mm — the S0 size footprint fits standard load-feeder panels. Snap-mounted onto DIN rail or screw-mounted with the additional push-in lug supplied. Minimum clearances around the unit: 30 mm upwards, 10 mm forwards, 10 mm downwards, 9 mm at the side, 0 mm backwards. The zero rear clearance means you can mount it flush against the back panel — useful in tight enclosures. Mounting position is vertical only — the thermal overload curve and contactor life assume upright orientation for proper heat dissipation. ## Supplied components and wiring The starter ships as a pre-assembled unit containing the 3RT2027-1AP60 contactor and the 3RA2921-1AA00 link module, matched to the S0 circuit-breaker size. No separate ordering of contactor and overload — one order code, one assembly. Main contact wiring accepts 1... 10 mm² stranded, or 2× (2.5... 6 mm²) — enough for the 11 kW motor circuit without splicing. Rated insulation voltage is 690 V with pollution degree 3 — suitable for industrial environments where conductive dust or humidity is present, as long as the panel maintains the specified clearance. ## Lifecycle and sourcing — active, quoted to order No minimum order restrictions for this active line item.","metaTitle":"Siemens 3RA2125-4DA27-0AP6 SIRIUS Motor Starter","metaDescription":"Siemens 3RA2125-4DA27-0AP6 SIRIUS non-fused motor starter, 11 kW at 400 V AC-3. Class 10 thermal overload. Active production, quoted to order. Request RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"97.1 mm","Width":"45 mm","title":"3RA2125-4DA27-0AP6","Height":"193.1 mm","Upwards":"30 mm","Forwards":"10 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 600V AC SZ S0 20-25A 220/240V AC 50/60HZ SCREW CONNECTION FOR SCREW MOUNTING OR 35 MM RAIL-MOUNTING TYPE OF COORDINATION 2 IQ = 150 KA ALSO FULFILLS TYPE OF COORDINATION 1 1NO+1NC (MSP) 1NO+1NC (CONTACTOR)","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"Snap-mounted to DIN rail or screw-mounted with additional push-in lug","Mounting Position":"vertical","Product Brand Name":"SIRIUS","Type Of Assignment":"2","Degree Of Pollution":"3","Product Designation":"non-fused motor starter 3RA2","Size Of Load Feeder":"S0","at 230 V rated value":"3 hp","at 400 V rated value":"11 000 W","at 480 V rated value":"22.2 A","at 50 Hz rated value":"176 ... 242 V","at 500 V rated value":"15 000 W","at 60 Hz rated value":"192 ... 264 V","at 600 V rated value":"21.9 A","Design Of The Product":"direct starter","at 110/120 V rated value":"2 hp","at 200/208 V rated value":"5 hp","at 220/230 V rated value":"7.5 hp","at 460/480 V rated value":"15 hp","at 575/600 V rated value":"20 hp","Of The Supplied Contactor":"3RT2027-1AP60","For Main Contacts Stranded":"1 ... 10 mm², 2x (2.5 ... 6 mm²)","Of The Supplied Link Module":"3RA2921-1AA00","Size Of The Circuit-Breaker":"S0","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","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2021-4DA15","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":"9.4 VA","number of NC contacts for auxiliary contacts":"2","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","at 500 V according to IEC 60947-4-1 rated value":"100 000 A","operational current at AC-3 at 400 V rated value":"22 A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals","Inductive Power Factor With The Holding Power Of The Coil":"0.28","Mechanical Service Life (Switching Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"325 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"20 ... 25 A","Connectable Conductor Cross-Section For Main Contacts Finely Stranded With Core End Processing":"1 ... 6 mm²"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/77793bb94a087b26fd1330647b2a6966.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=309997&mlfb=3RA2125-4DA27-0AP6"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 3RA2125-4DA27-0AP6?","answer":"The evidence does not list specific certifications (UL, CSA, CE). Standard Siemens SIRIUS motor starters carry CE marking for the European market and UL/CSA listings for North America — confirm the exact approvals needed for your jurisdiction at RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2125-4DA27-0AP6","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/3RA2125-4DA27-0AP6 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}}