{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1044-3AG16","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1044-3AG16","canonicalUrl":"https://aoctrl.com/siemens/3RT1044-3AG16","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1044-3AG16","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, Size S3, 3RT1044-3AG16, screw-type terminals, 30 kW AC-2 at 400 V, 50/60 Hz, snap-on mounting.","salesMarkdown":"At 500 V it delivers 37 kW, and at 690 V it still manages 18.6 kW, giving flexibility for higher-voltage motor circuits common in European and export panels. That's a generous wire range for a Size S3 frame — enough for the full rated current without needing a terminal adapter. The auxiliary contact block (not included in this order code) shares the same screw-clamp style, so the entire contactor row terminates with the same tooling. The 90 mm width and 146 mm height fit a standard 8-module enclosure row; side-by-side mounting is permitted, so you can gang multiple contactors without a gap for cooling, as long as the ambient stays within the -25 to +60 °C operating range. IP20 on the front with a cover or box terminal keeps fingers out; the terminal body itself is IP00, so it expects enclosure protection.","metaTitle":"Siemens 3RT1044-3AG16 SIRIUS Power Contactor, 30 kW AC-2 at","metaDescription":"Siemens SIRIUS 3RT1044-3AG16 power contactor, Size S3, 30 kW AC-2 at 400 V. Screw terminals, snap-on DIN rail. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"139 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"90 mm","at AC":"10 ... 19 ms","Height":"146 mm","Stranded":"2x (10 ... 50 mm²)","at 60 Hz":"0.8 ... 1.1","Arcing Time":"10 ... 15 ms","On The Front":"IP20; IP20 on the front with cover / box terminal","1 Rated Value":"60 Hz","2 Rated Value":"50 Hz","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"400 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"300 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm and 75 mm standard mounting rail","Size Of Contactor":"S3","Solid Or Stranded":"2x (2.5 ... 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":"100 V","at 500 V rated value":"37 kW","at 60 Hz rated value":"110 V","at 690 V rated value":"18.6 kW","Side-By-Side Mounting":"Yes","at 1000 V rated value":"30 W","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"30 kW","at AC-4 at 400 V rated value":"55 A","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"35 mm²","at 60 °C minimum permissible":"35 mm²","Insulation Voltage Rated Value":"1 000 V","at 230 V at 60 °C rated value":"34 kW","at 690 V at 60 °C rated value":"102 kW","at 1000 V at 60 °C rated value":"66 W","at AWG cables for main contacts":"2x (10 ... 1/0)","For Auxiliary And Control Circuit":"spring-loaded terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 125 A","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"fuse gL/gG: 250 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":"600 A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","apparent holding power of magnet coil at AC":"20 VA","apparent pick-up power of magnet coil at AC":"232 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":"0.55","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.28","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=181452&mlfb=3RT1044-3AG16","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1044-3AG16/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source — the 3RT1044-1FB46?","answer":"The 3RT1044-1FB46 is the spring-cage terminal variant of the same S3 frame and same AC-2 motor rating. The mounting footprint, coil voltage, and auxiliary contact compatibility are identical. The difference is wiring: screw terminals on the -3AG16 versus spring-cage on the -1FB46. If your panel is already wired with ferruled conductors and you prefer tool-less insertion, the -1FB46 is a direct mechanical swap. If your installers are set up for screw-clamp torque specs, stick with the -3AG16."},{"question":"What is the depth of the 3RT1044-3AG16?","answer":"139 mm from the mounting surface to the furthest projection (typically the arc chute or auxiliary contact cover). That's within the standard 160 mm deep enclosure profile for a Size S3 contactor."},{"question":"What is the solid conductor range for the main terminals?","answer":"The screw terminals accept solid conductors from 2x 0.25 mm² up to 2x 2.5 mm². For stranded wire, the range extends to 2x 50 mm², which covers the full rated current without paralleling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1044-3AG16","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/3RT1044-3AG16 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}}