{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1044-1AR60","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1044-1AR60","canonicalUrl":"https://aoctrl.com/siemens/3RT1044-1AR60","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1044-1AR60","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1044-1AR60 power contactor, size S3, 37 kW at 500 V AC-3, screw-type terminals, IP20 front, 70 x 146 x 139 mm.","salesMarkdown":"The Siemens 3RT1044-1AR60 is a SIRIUS size S3 power contactor rated for 37 kW at 500 V in AC-3 duty, meaning it handles the inrush and running current of a motor load up to that power level. The 70 mm width and 146 mm height fit the S3 footprint on a 35 mm or 75 mm DIN rail, with side-by-side mounting permitted for multi-contactor assemblies. AC-3 switching rate maxes at 1 000 operations per hour, so it cycles a conveyor or pump motor every 3.6 seconds without exceeding the thermal limit. Mechanical life is 10 000 000 operations typical, so the armature and spring set outlast most load-side components in a 24/7 line. Pollution degree 3 means the contactor tolerates conductive dust and humidity found in unsealed industrial enclosures.","metaTitle":"Siemens 3RT1044-1AR60 SIRIUS Power Contactor, 37 kW at 500 V","metaDescription":"Siemens SIRIUS 3RT1044-1AR60 power contactor, size S3, 37 kW at 500 V AC-3. Screw terminals, IP20 front. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"139 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"70 mm","at AC":"10 ... 19 ms","Height":"146 mm","Stranded":"2x (10 ... 50 mm²)","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","Arcing Time":"10 ... 15 ms","On The Front":"IP20; IP20 on the front with cover / box terminal","1 Rated Value":"50 Hz","2 Rated Value":"60 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":"400 V","at 500 V rated value":"37 kW","at 60 Hz rated value":"400 ... 440 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":"screw-type 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 (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":"600 A","Finely Stranded Without Core End Processing":"2x (10 ... 35 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":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","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=333797&mlfb=3RT1044-1AR60","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1044-1AR60/alternatives.json"},"ai":{"faq":[{"question":"What is the 3RT1044-1AR60 rated for in AC-3 duty?","answer":"It is rated for 37 kW at 500 V in AC-3 duty, which covers standard squirrel-cage motor starting and running. At 690 V the rating drops to 18.6 kW."},{"question":"What wire sizes does the 3RT1044-1AR60 accept on the main circuit?","answer":"The screw-type main terminals accept stranded wire from 2x (10... 50 mm²). Solid or stranded control-circuit terminals accept 2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²), and up to 2x (0.75... 4 mm²)."},{"question":"Can the 3RT1044-1AR60 be mounted side-by-side with other contactors?","answer":"Yes, side-by-side mounting is permitted, so multiple contactors can be ganged on the same DIN rail without derating for heat buildup."},{"question":"Where can I buy the 3RT1044-1AR60?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1044-1AR60","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/3RT1044-1AR60 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}}