{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1034-3AL26","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1034-3AL26","canonicalUrl":"https://aoctrl.com/siemens/3RT1034-3AL26","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1034-3AL26","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1034-3AL26 power contactor, size S2, screw-type terminals, 15 kW at AC-2 400 V, 35 mm DIN rail mount.","salesMarkdown":"The main current circuit uses screw-type terminals, accepting solid conductors 2x (0.25... 2.5 mm²) and stranded conductors 2x (0.75... 25 mm²), with a separate terminal range of 2x (0.75... 16 mm²) for solid or stranded wire. Rated at 15 kW for AC-2 duty at 400 V, this contactor handles wound-rotor motor loads or moderate inrush applications — the AC-2 rating covers starting and switching off slip-ring motors. For higher-voltage motor circuits, it carries 18.5 kW at 500 V and 10 kW at 690 V, giving headroom for 480 V or 600 V class systems common in North American and export panels. Auxiliary contact ratings cover 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, 6 A at 230 V, and 3 A at 400 V — sufficient for pilot duty and PLC input signaling in most control schemes. Mechanical life is rated at 10,000,000 operations typical, with maximum switching frequencies of 1,200 cycles/hour at AC-1, 750 at AC-2, 1,000 at AC-3, and 250 at AC-4 — the AC-4 figure is the limiting factor for plugging or inching duty. ## Environmental and Installation Constraints Degree of pollution is rated 3, meaning it tolerates conductive pollution typical in industrial enclosures — no special conformal coating needed for normal panel conditions. IP20 on the front (finger-safe) and IP00 at the terminals means the contactor body is protected from accidental contact, but the terminal area requires enclosure protection against dust and moisture. As a current-production SIRIUS S2 frame contactor, it is sourced through standard Siemens distribution channels. Submit an RFQ for lead time and pricing on your required quantity.","metaTitle":"Siemens SIRIUS 3RT1034-3AL26 Power Contactor, S2, 15 kW AC-2","metaDescription":"Siemens SIRIUS 3RT1034-3AL26 power contactor, size S2, rated 15 kW at AC-2 400 V. Screw terminals, 35 mm DIN rail mount. Current production. RFQ for pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"115 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"75 mm","at AC":"7 ... 20 ms","Height":"112 mm","Stranded":"2x (0.75 ... 25 mm²)","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","Arcing Time":"10 ... 15 ms","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","at AC-1 maximum":"1 200 1/h","at AC-2 maximum":"750 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Size Of Contactor":"S2","Solid Or Stranded":"2x (0.75 ... 16 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"230 V","at 500 V rated value":"18.5 kW","at 60 Hz rated value":"230 V","at 690 V rated value":"10 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"15 kW","at AC-4 at 400 V rated value":"29 A","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"16 mm²","at 60 °C minimum permissible":"10 mm²","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"18 kW","at 690 V at 60 °C rated value":"54 kW","at AWG cables for main contacts":"2x (18 ... 2)","For Auxiliary And Control Circuit":"spring-loaded terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 63 A","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"fuse gL/gG: 125 A","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Thermal Short-Time Current Limited To 10 S":"320 A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","apparent holding power of magnet coil at AC":"11.3 VA","apparent pick-up power of magnet coil at AC":"127 VA","Type Of Voltage Of The Control Supply Voltage":"AC","Required Spacing For Grounded Parts At The Side":"6 mm","contact rating of auxiliary contacts according to UL":"A600 / Q600","Inductive Power Factor With Closing Power Of The Coil":"0.73","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.41","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","number of NC contacts for auxiliary contacts instantaneous contact":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=63314&mlfb=3RT1034-3AL26","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1034-3AL26/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions of the 3RT1034-3AL26?","answer":"The contactor measures 75 mm wide, 112 mm high, and 115 mm deep, fitting the S2 frame size."},{"question":"What wire sizes does the 3RT1034-3AL26 accept?","answer":"Solid conductors: 2x (0.25 to 2.5 mm²). Stranded conductors: 2x (0.75 to 25 mm²). A second terminal range accepts 2x (0.75 to 16 mm²) for solid or stranded wire."},{"question":"Will the 3RT1034-3AL26 drop into a panel designed for the 3RT1036-1AB00?","answer":"Both are SIRIUS contactors but in different frame sizes — the 3RT1034-3AL26 is S2, while the 3RT1036-1AB00 is a different frame. Physical dimensions and mounting hole patterns may differ; verify panel cutout and rail space before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1034-3AL26","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/3RT1034-3AL26 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}}