{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1034-3AF04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1034-3AF04","canonicalUrl":"https://aoctrl.com/siemens/3RT1034-3AF04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1034-3AF04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1034-3AF04, size S2, screw-type terminals, 15 kW at 400 V AC-2, 29 A at 400 V AC-4, 55 mm width, DIN EN 50022 rail mount.","salesMarkdown":"Rated for AC-2 duty at 15 kW at 400 V, this contactor handles slip-ring motor starting and reversing. For inching and plugging duty (AC-4), it carries 29 A at 400 V, which is the rating that governs real-world life in demanding applications — not the higher AC-3 number. The main power circuit uses screw-type terminals, accepting 2x (0.75... 25 mm²) stranded or 2x (0.25... 2.5 mm²) solid conductors. The minimum permissible cross-section at 40 °C is 16 mm², which is the wire size needed to carry the rated current without derating. Coil pickup currents are specified across the voltage range: 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. The coil operates reliably between 0.8 and 1.1 times the rated voltage at 50 Hz. Switching frequencies are rated per duty class: 1,200 operations per hour for AC-1 resistive loads, 750 for AC-2, 1,000 for AC-3, and 250 for AC-4. RoHS compliance is documented with a substance prohibition date of May 1, 2012, indicating the part meets the EU RoHS directive for hazardous substance restrictions. REACH and other regulatory documentation is available from the manufacturer.","metaTitle":"Siemens 3RT1034-3AF04 SIRIUS Power Contactor, Size S2, 15kW","metaDescription":"Siemens 3RT1034-3AF04 SIRIUS power contactor, size S2. Rated 15kW at 400V AC-2, 29A at 400V AC-4. Screw terminals, DIN rail mount. Current lifecycle stage. Sourced to order.","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":"110 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":"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=491648&mlfb=3RT1034-3AF04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1034-3AF04/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor ratings for this contactor?","answer":"The 3RT1034-3AF04 is rated 15 kW at 400 V for AC-2 duty (slip-ring motors) and 29 A at 400 V for AC-4 duty (inching/plugging). At 500 V it handles 18.5 kW, and at 690 V it handles 10 kW."},{"question":"What wire sizes does the screw terminal accept?","answer":"The main circuit terminals accept 2x (0.75... 25 mm²) stranded or 2x (0.25... 2.5 mm²) solid conductors. The minimum cross-section at 40 °C is 16 mm²."},{"question":"What is the physical size and mounting method?","answer":"The contactor is 55 mm wide, 112 mm high, and 164 mm deep. It mounts on a 35 mm DIN rail per DIN EN 50022 using screw fixing or snap-on clip, and allows side-by-side mounting."},{"question":"What compliance documentation is available?","answer":"RoHS compliance is documented with a substance prohibition date of May 1, 2012. The part carries IP20 front protection and IP00 terminal protection, and is rated for pollution degree 3 environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1034-3AF04","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/3RT1034-3AF04 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}}