{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1044-3AG14","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1044-3AG14","canonicalUrl":"https://aoctrl.com/siemens/3RT1044-3AG14","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1044-3AG14","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1044-3AG14 power contactor, S3 size, 37 kW at 500 V AC-3, screw terminals, snap-on 35/75 mm DIN rail.","salesMarkdown":"The 70 mm width and 146 mm height fit a standard contactor footprint — no surprises for panel layout. The AC-3 motor rating of 37 kW at 500 V is the headline number — that's the current it can switch under full-load motor starting (inductive load, not resistive). The 690 V rating drops to 18.6 kW because the same contactor has to interrupt a higher voltage with the same arc-quenching capability. If your motor is 400 V, the AC-3 rating is 30 kW (cited as AC-2 at 400 V, 30 kW). The auxiliary contact ratings (2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V) are for the control circuit, not the main power path. The storage range is wider because the contactor isn't switching under load — that's the handling and shelf-life limit, not the running limit. Solid wire accepts 2x (0.25 to 2.5 mm²) or 2x (2.5 to 16 mm²) depending on the conductor size; stranded accepts 2x (10 to 50 mm²). That covers most panel wiring from control-circuit tails to motor feeders. The pollution degree is 3 (conductive or dry non-conductive pollution), typical for industrial control panels. If you're comparing it to the 3RT1036-1AB00 (a smaller S2 frame), the 3RT1044-3AG14 is a size up — higher current and power ratings, wider terminals, and a different mounting footprint. It won't drop into a panel wired for the S2 without rewiring the power circuit and possibly the DIN rail bracket.","metaTitle":"Siemens SIRIUS 3RT1044-3AG14 power contactor, S3, 37 kW at 5","metaDescription":"Siemens SIRIUS 3RT1044-3AG14 power contactor, S3 size, 37 kW at 500 V AC-3, 70 mm wide, screw terminals, snap-on DIN rail, current production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"188 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"70 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=399613&mlfb=3RT1044-3AG14","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1044-3AG14/alternatives.json"},"ai":{"faq":[{"question":"What is the mounting and enclosure rating?","answer":"It mounts via screw or snap-on onto 35 mm or 75 mm DIN rail. The front has IP20 protection with a cover; the terminal area is IP00."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1044-3AG14","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/3RT1044-3AG14 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}}