{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1034-3AP08-1MA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1034-3AP08-1MA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1034-3AP08-1MA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1034-3AP08-1MA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1034-3AP08-1MA2, Size S2, screw-type terminals, 15 kW at AC-2 400 V, 29 A at AC-4 400 V, 55 mm width, 112 mm height, 164 mm depth.","salesMarkdown":"## Siemens SIRIUS 3RT1034-3AP08-1MA2 Power Contactor — Sizing and Fit Its AC-2 rating of 15 kW at 400 V covers wound-rotor motor applications, while the AC-4 rating of 29 A at 400 V handles reversing and inching duty — the high-stress cycles that generate arcing across the main contacts. The contactor carries a mechanical life of 10 million operations, so it holds up in high-cycle packaging or material-handling lines where contactors get cycled hundreds of times an hour. Screw-type terminals on the main current circuit accept solid conductors from 0.25 to 2.5 mm² (two per clamp) and stranded conductors from 0.75 to 25 mm² (two per clamp). The 16 mm² minimum at 40 °C tells you the lug sizing for full-rated current — don't undersize the feed wire if you're pulling the full AC-4 load. The IP20 front means the contactor is finger-safe once installed inside an enclosure; the terminal area itself is IP00, so keep it behind a panel door or cover.","metaTitle":"Siemens 3RT1034-3AP08-1MA2 SIRIUS Power Contactor, Size S2,","metaDescription":"Siemens SIRIUS power contactor 3RT1034-3AP08-1MA2, Size S2, rated 15 kW at AC-2 400 V, 29 A at AC-4 400 V. Screw terminals, DIN rail mount. Current lifecycle stage. RFQ for pricing","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"164 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"55 mm","at AC":"7 ... 20 ms","Height":"112 mm","Stranded":"2x (0.75 ... 25 mm²)","at 50 Hz":"0.8 ... 1.1","Arcing Time":"10 ... 15 ms","On The Front":"IP20","1 Rated Value":"50 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 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":"9.7 VA","apparent pick-up power of magnet coil at AC":"104 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":"0.78","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.42","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":"1","number of NO contacts for auxiliary contacts instantaneous contact":"3","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=330834&mlfb=3RT1034-3AP08-1MA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1034-3AP08-1MA2/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor ratings for this contactor?","answer":"At AC-2 duty (wound-rotor motors), it is rated 15 kW at 400 V. At AC-4 duty (reversing/inching), it carries 29 A at 400 V. These are the ratings that govern motor switching capability, not the AC-1 resistive load curve."},{"question":"What wire sizes does the screw terminal accept?","answer":"Solid conductors: 2x (0.25 to 2.5 mm²). Stranded conductors: 2x (0.75 to 25 mm²). Minimum permissible cross-section at 40 °C is 16 mm²."},{"question":"What compliance documentation is available for this contactor?","answer":"The part carries a substance prohibitance date of 05/01/2012, indicating RoHS compliance for materials restricted as of that date. The SIRIUS series typically carries UL, CSA, and CE certifications; verify specific approval markings on the nameplate for your jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1034-3AP08-1MA2","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/3RT1034-3AP08-1MA2 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}}