{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1044-3AK60","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1044-3AK60","canonicalUrl":"https://aoctrl.com/siemens/3RT1044-3AK60","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1044-3AK60","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S3 power contactor, 3RT1044-3AK60, 37 kW at 500 V, 18.6 kW at 690 V, screw terminals, IP20 front, DIN-rail mount.","salesMarkdown":"## SIRIUS S3 Power Contactor – 3RT1044-3AK60 The Siemens 3RT1044-3AK60 is a SIRIUS S3 power contactor rated for motor switching at 37 kW at 500 V and 18.6 kW at 690 V, with screw-type terminals on the main circuit and an IP20 front enclosure. It mounts on 35 mm or 75 mm DIN rail via screw and snap-on fastening, sized for panel builders who need a rugged, serviceable contactor in a standard S3 frame. Dimensions are 146 mm height, 70 mm width, and 139 mm depth — a compact S3 footprint that fits standard enclosures. Side-by-side mounting is allowed without derating for most load profiles. This contactor handles AC-1 resistive loads at 1,000 operations per hour, AC-3 motor switching at 1,000 ops/h, and AC-4 inching/jogging at 300 ops/h. The AC-3 rating is the one that matters for most conveyor, pump, and fan applications — at 500 V it delivers 37 kW, at 690 V it delivers 18.6 kW. Coil draw at 24 V is 10 A, at 60 V is 2 A — low enough for most PLC outputs but verify your drive card's peak current. Main circuit terminals accept solid conductors 2x (0.25–2.5 mm²) and stranded 2x (10–50 mm²) — covers everything from control wiring to motor feeders. The screw-type terminal block is field-serviceable; no special tools beyond a screwdriver. For the auxiliary contacts (if fitted), the same solid range applies. Strip length and torque values are standard for the SIRIUS family — no surprises for a panel builder familiar with the range.","metaTitle":"Siemens 3RT1044-3AK60 SIRIUS S3 Power Contactor, 37 kW at 50","metaDescription":"Siemens SIRIUS S3 power contactor 3RT1044-3AK60, 37 kW at 500 V, 18.6 kW at 690 V, screw terminals, IP20 front, DIN-rail mount, current lifecycle stage. Sourced to order against an","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":"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":"0.8 ... 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":"110 V","at 500 V rated value":"37 kW","at 60 Hz rated value":"120 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":"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=328997&mlfb=3RT1044-3AK60","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1044-3AK60/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1044-3AK60 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quotation (RFQ) with your quantity and target delivery date; availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional second-source for 3RT1044-3AK60?","answer":"The closest functional peer is the 3RT1044-1FB46, which shares the same SIRIUS S3 frame and similar AC-3 motor ratings. However, terminal configuration and auxiliary contact arrangement may differ — verify the wiring diagram before substituting."},{"question":"What is 3RT1044-3AK60's listed depth?","answer":"The depth is 139 mm, which fits standard S3 panel cutouts."},{"question":"What solid conductor sizes does 3RT1044-3AK60 accept?","answer":"The main circuit terminals accept solid conductors 2x (0.25–2.5 mm²)."},{"question":"Will 3RT1044-3AK60 drop into a panel specified around 3RT1044-1FB46 without rewiring?","answer":"Mechanically it fits the same S3 footprint and DIN-rail mounting, but terminal layout and auxiliary contact positions may differ. Check the wiring diagram against the existing panel before assuming a drop-in swap."},{"question":"What compliance documentation does Siemens provide for 3RT1044-3AK60?","answer":"Siemens typically provides a Declaration of Conformity covering RoHS, REACH, and applicable IEC/EN standards (e.g., IEC 60947-4-1). Request the specific document from your supplier or Siemens support with the order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1044-3AK60","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/3RT1044-3AK60 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}}