{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1044-3AK60-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1044-3AK60-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1044-3AK60-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1044-3AK60-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1044-3AK60-1AA0 power contactor, size S3, 37 kW at 500 V AC-3, 110 V 50 Hz / 120 V 60 Hz coil, screw terminals, IP20 front, DIN rail mount.","salesMarkdown":"## Integrator's Note — SIRIUS 3RT1044-3AK60-1AA0 The Siemens 3RT1044-3AK60-1AA0 is a SIRIUS power contactor in the size S3 frame, rated for motor switching at 37 kW on a 500 V AC-3 supply — that's the headline figure for conveyor, pump, or fan duty where the load is inductive and the switching frequency is moderate. Coil is dual-frequency rated: 110 V at 50 Hz and 120 V at 60 Hz, with an operating range of 0.8 to 1.1 times the rated voltage at either frequency — so it holds in during brownout conditions down to about 88 V at 50 Hz. Screw-type terminals on the main circuit accept 2x (10 to 50 mm²) stranded cable; auxiliary contacts are rated 10 A at 24 V, stepping down to 0.3 A at 220 V — enough for PLC-level signal switching but watch the DC derating curve if you're breaking inductive DC loads. Side-by-side mounting is permitted, which keeps the panel width tight; the 70 mm width per unit means a row of four occupies 280 mm of rail space. IP20 on the front with cover or box terminal; the terminal area itself is IP00 — standard for screw-clamp contactors, but plan for a finger-safe cover if the panel is live during maintenance. At AC-3 duty the maximum switching rate is 1000 cycles per hour, so it handles frequent start-stop cycles on a conveyor without exceeding the thermal limit of the coil. AC-3 (motor starting) rating is 37 kW at 500 V and 18.6 kW at 690 V — the lower voltage yields higher current capacity, so size the contactor for the line voltage you actually have. AC-1 (resistive heating) maximum switching rate is 1000 cycles per hour; AC-4 (plugging/inching) drops to 300 cycles per hour — the inrush and breaking duty on AC-4 generates more arc energy, so the contactor needs longer cool-down between operations. Auxiliary contact ratings span 10 A at 24 V down to 0.3 A at 220 V, with a 30 W limit at 1000 V — fine for signaling a PLC input or driving a small relay, but not for direct motor control.","metaTitle":"Siemens 3RT1044-3AK60-1AA0 SIRIUS Power Contactor, 37 kW at","metaDescription":"Siemens SIRIUS 3RT1044-3AK60-1AA0 power contactor, size S3, 37 kW at 500 V AC-3, 110 V 50 Hz / 120 V 60 Hz coil, screw terminals, DIN rail mount, active production.","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=109841&mlfb=3RT1044-3AK60-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1044-3AK60-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor ratings for this contactor?","answer":"The AC-3 motor rating is 37 kW at 500 V and 18.6 kW at 690 V. The coil is dual-frequency rated for 110 V at 50 Hz and 120 V at 60 Hz."},{"question":"What wire sizes does the main circuit accept?","answer":"The screw-type main terminals accept 2x (10 to 50 mm²) stranded cable, or 2x (2.5 to 16 mm²) solid or stranded. Auxiliary terminals accept 2x (0.25 to 2.5 mm²) solid."},{"question":"Can this contactor be mounted side-by-side with others?","answer":"Yes, side-by-side mounting is permitted. The unit width is 70 mm, so multiple contactors can be ganged on DIN rail without spacing gaps."},{"question":"What is the operating temperature range?","answer":"Operating temperature is -25 to +60 °C; storage temperature is -55 to +80 °C. Pollution degree 3 rating suits industrial environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1044-3AK60-1AA0","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/3RT1044-3AK60-1AA0 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}}