{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1034-1DB44","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1034-1DB44","canonicalUrl":"https://aoctrl.com/siemens/3RT1034-1DB44","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1DB44","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1034-1DB44, S2 frame size, 24 VDC coil, screw-type terminals, 55 mm width, IP20 front protection.","salesMarkdown":"Rated for AC-3 duty at 400 V delivering 15 kW — that is the standard motor-switching category for squirrel-cage induction motors, so this contactor handles a 15 kW motor on a 400 V line. At 500 V the same motor load capability rises to 18.5 kW; at 690 V it drops to 10 kW, reflecting the voltage derate on the switching arc. For reversing or inching duty (AC-4), the contactor is rated 29 A at 400 V. That is the current it can break under the severe switching conditions of plugging or jogging, where the motor is reconnected while still spinning. The AC-4 switching frequency maxes at 250 operations per hour, compared to 1 000 per hour for AC-3 — a direct limit on how fast you can cycle in demanding applications. Auxiliary contacts are rated across the control voltage range: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V. These are the make/break capacities for the control circuit — interposing relays, PLC inputs, or indicator lamps — and they decline with voltage as the arc energy grows. Rated for pollution degree 3, meaning it tolerates conductive dust or intermittent condensation typical of industrial enclosures.","metaTitle":"Siemens 3RT1034-1DB44 SIRIUS Power Contactor, 24 VDC Coil, S","metaDescription":"Siemens 3RT1034-1DB44 SIRIUS power contactor, S2 frame, 24 VDC coil, screw terminals, 55 mm width, IP20 front, current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"179 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"55 mm","at DC":"20 ... 30 ms","Height":"112 mm","Stranded":"2x (0.75 ... 25 mm²)","Arcing Time":"10 ... 15 ms","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.8","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","Full-Scale Value":"1.1","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 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","Design Of The Surge Suppressor":"with varistor","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":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 63 A","closing power of magnet coil at DC":"13.3 W","holding power of magnet coil at DC":"13.3 W","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 (20 ... 16), 2x (18 ... 14), 1x 12","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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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 (0.75 ... 16 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","Required Spacing For Grounded Parts At The Side":"6 mm","contact rating of auxiliary contacts according to UL":"A600 / Q600","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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=179668&mlfb=3RT1034-1DB44","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1DB44/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor power ratings for this contactor?","answer":"At 400 V AC-3 duty it delivers 15 kW; at 500 V AC-3 it delivers 18.5 kW; at 690 V AC-3 it delivers 10 kW. For AC-4 reversing duty at 400 V the current rating is 29 A."},{"question":"What is the physical footprint for panel layout?","answer":"Width is 55 mm, height 112 mm, depth 179 mm. It mounts on 35 mm DIN rail per DIN EN 50022 and supports side-by-side mounting without spacing."},{"question":"What wire sizes does the screw terminal accept?","answer":"For stranded conductors: 2x (0.75... 25 mm²). For solid conductors: 2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²), max. 2x (0.75... 4 mm²). Also accepts 2x (0.75... 16 mm²) solid or stranded."},{"question":"What compliance documentation is available?","answer":"The part carries a substance prohibitance date of 05/01/2012, indicating RoHS compliance per the EU directive. As a Siemens SIRIUS catalog item, it also holds CE and UL certifications standard for the series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1034-1DB44","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/3RT1034-1DB44 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}}