{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1044-1AQ24","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1044-1AQ24","canonicalUrl":"https://aoctrl.com/siemens/3RT1044-1AQ24","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1044-1AQ24","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S3 power contactor, 3RT1044-1AQ24, 37 kW at 500 V AC-3, 50/60 Hz, screw terminals, snap-on mounting.","salesMarkdown":"## Integrator note — 3RT1044-1AQ24 The Siemens 3RT1044-1AQ24 is a SIRIUS S3 power contactor rated for motor switching at 37 kW at 500 V AC-3 (50/60 Hz). It handles 18.6 kW at 690 V AC-3, so the voltage class determines the kW limit — at 500 V you get the full 37 kW; at 690 V it derates to 18.6 kW. That's the number to check against your motor nameplate. Snaps onto 35 mm or 75 mm standard mounting rail — screw and snap-on fastening method. Dimensions: 146 mm high, 70 mm wide, 188 mm deep. ## Environmental and protection Front face carries IP20 protection (with cover or box terminal); the terminal area itself is IP00 — keep fingers and tools clear when live. ## Switching performance AC operating time (closing) is 10 to 19 ms; arcing time 10 to 15 ms. Maximum switching rates: 1000 cycles/hour at AC-1 or AC-3, 400 at AC-2, 300 at AC-4. Pickup voltage range 0.8 to 1.1 x rated at 50 Hz, 0.85 to 1.1 at 60 Hz.","metaTitle":"Siemens 3RT1044-1AQ24 SIRIUS Power Contactor, S3, 37 kW at 5","metaDescription":"Siemens 3RT1044-1AQ24 SIRIUS S3 power contactor. 37 kW at 500 V AC-3, 50/60 Hz. Screw terminals, snap-on 35/75 mm rail. IP20 front. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"188 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":"500 V","at 500 V rated value":"37 kW","at 60 Hz rated value":"500 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":"25 VA","apparent pick-up power of magnet coil at AC":"247 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":"0.62","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.27","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=354229&mlfb=3RT1044-1AQ24","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1044-1AQ24/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1044-1AQ24 and how do I get a price?","answer":"The 3RT1044-1AQ24 is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will 3RT1044-1AQ24 drop into a panel specified around 3RT1044-1FB46 without rewiring?","answer":"Both are SIRIUS S3 power contactors with the same mounting footprint (snap-on 35/75 mm rail) and screw-type main terminals, so mechanical fit is identical. The 1AQ24 uses a 24 VDC coil; the 1FB46 uses a different coil voltage — verify the control circuit voltage before substitution."},{"question":"What compliance documentation does this brand provide for 3RT1044-1AQ24?","answer":"As a Siemens SIRIUS product, the 3RT1044-1AQ24 typically carries UL, CSA, CE, and CCC approvals. RoHS and REACH declarations are available from the manufacturer. Specific certification markings should be verified against the product label for the exact shipped variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1044-1AQ24","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/3RT1044-1AQ24 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}}