{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1344-1AR60","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1344-1AR60","canonicalUrl":"https://aoctrl.com/siemens/3RT1344-1AR60","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1344-1AR60","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, order code 3RT1344-1AR60, Size S3, 42 kW at 230 V, 1000 V insulation voltage, screw-type terminals, DIN-rail mounting.","salesMarkdown":"It carries a rated insulation voltage of 1000 V and is rated for 42 kW at 230 V at 60 °C, making it a fit for moderate-to-large motor applications on 230 V three-phase systems. The contactor mounts on standard 35 mm or 75 mm DIN rail using screw and snap-on fastening, and its front face carries an IP20 protection rating with the cover or box terminal installed — enough for basic touch protection inside a panel. The 42 kW motor power rating at 230 V at 60 °C is the headline figure for sizing — it tells you the largest standard three-phase induction motor this contactor can switch under continuous duty at that temperature. For DC switching, the contactor is rated 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V. These are the maximum DC-1 or DC-13 resistive/inductive loads at each voltage — useful if you are switching DC brake coils or small DC motors from the same contactor. The AC coil is rated for 400 V at 50 Hz and 400 to 440 V at 60 Hz, with an operating range of 0.8 to 1.1 times rated voltage at 50 Hz and 0.85 to 1.1 at 60 Hz. That is a high-cycle contactor — suitable for frequent start/stop applications like conveyor or pump cycling, not just infrequent isolation. ## Terminal specs and wiring Main circuit terminals are screw-type, accepting solid conductors from 0.5 to 4 mm² (two per terminal) and stranded conductors from 10 to 50 mm² (two per terminal). The larger stranded range (up to 50 mm²) covers the main power wiring for the 42 kW load; the smaller solid range is for control wiring on the same terminal block. The minimum cross-section at 40 °C and 60 °C is 35 mm² for the main circuit — that is the smallest wire that meets the thermal rating at those ambient temperatures.","metaTitle":"Siemens 3RT1344-1AR60 SIRIUS Power Contactor, Size S3","metaDescription":"Siemens 3RT1344-1AR60 SIRIUS power contactor, Size S3. Rated 42 kW at 230 V, 1000 V insulation voltage. Screw terminals, DIN-rail mount. Current lifecycle","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":"93 mm","at AC":"10 ... 25 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","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 60 Hz rated value":"400 ... 440 V","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","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":"42 kW","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":"4","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":"4","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=292892&mlfb=3RT1344-1AR60","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1344-1AR60/alternatives.json"},"ai":{"faq":[{"question":"What are the terminal specifications for 3RT1344-1AR60?","answer":"Main circuit terminals are screw-type, accepting 2x solid conductors from 0.5 to 4 mm² and 2x stranded conductors from 10 to 50 mm². Auxiliary terminals accept 2x solid or stranded conductors from 2.5 to 16 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1344-1AR60","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/3RT1344-1AR60 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}}