{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2344-1AK60","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2344-1AK60","canonicalUrl":"https://aoctrl.com/siemens/3RT2344-1AK60","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2344-1AK60","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2344-1AK60 contactor, size S3, screw and snap-on DIN rail mounting, 152 mm depth, 96 mm width, 140 mm height, auxiliary switch included.","salesMarkdown":"## Physical fit on the DIN rail The 3RT2344-1AK60: This S3-size contactor measures 152 mm deep, 96 mm wide, and 140 mm tall. The width is the critical dimension in a packed enclosure — at 96 mm it occupies about five 18 mm-wide DIN module slots, so plan the rail layout accordingly. These are the minimum air gaps for heat dissipation and arc flash clearance — don't cram it tighter. ## Main contact and auxiliary contact ratings Main contacts rated for 10 million mechanical operations typical — that's the cycle life before the contactor's mechanism wears, not the electrical endurance under load. For the main contacts, electrical life at rated AC-3 duty is 1 million operations typical, derating to 200,000 at full AC-1 resistive load. These are the make/break ratings for the control circuit — match the PLC output or relay coil draw to the appropriate voltage row. Coil voltage is AC, 110 V at 50 Hz or 120 V at 60 Hz. The coil consumes 10 A inrush at 24 V, dropping to a holding current that's a fraction of that — the thermal rating of the control transformer must handle the inrush without voltage sag. ## Wiring and termination Main power terminals accept stranded wire from 6 to 70 mm² — that covers from about 10 AWG up to 2/0 AWG. The magnet coil uses screw-type terminals — no push-in here. Torque them to the specification in the mounting instructions; under-torqued screw terminals on the coil circuit are a common source of intermittent contactor dropout under vibration. Arcing time is 10 to 21 ms at AC, and the arc chute clears in 10 to 20 ms. This is fast enough for most motor starting duty, but if you're switching highly inductive loads like solenoids or DC coils, consider an RC snubber across the contacts to suppress the arc re-strike.","metaTitle":"Siemens 3RT2344-1AK60 SIRIUS Contactor, S3 Size","metaDescription":"Siemens 3RT2344-1AK60 SIRIUS contactor, size S3, 152 mm depth, 96 mm width. Screw and snap-on DIN rail mounting. Quoted to order against BOM quantities.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"152 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"96 mm","at AC":"10 ... 21 ms","title":"3RT2344-1AK60","Height":"140 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"6 ... 70 mm²","at 50 Hz":"0.35","at 60 Hz":"0.41","Downwards":"10 mm","Attachable":"2","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","description":"contactor AC-1, 110 A, 400 V / 40 °C, 4-pole, 110 V AC, 50 Hz / 120 V, 60 Hz, auxiliary contacts: 1 NO + 1 NC, screw terminal, size: S3","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Type Of Voltage":"AC","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","For Main Contacts":"10 ... 2","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S3","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"6 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 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":"2 A","at 60 Hz rated value":"120 V","at 600 V rated value":"0.1 A","at 690 V rated value":"1 A","Instantaneous Contact":"1","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","at AC in hot operating state":"29.2 W","Substance Prohibitance (Date)":"09/01/2017","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gR: 250 A (690 V, 100 kA)","At Contactor For Auxiliary Contacts":"Screw-type terminals","operating frequency at AC-1 maximum":"1 000 1/s","With Type Of Coordination 1 Required":"gG: 250 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"7.3 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","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)","Product Function Short Circuit Protection":"No","mirror contact according to IEC 60947-4-1":"Yes","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"AC","Limited To 1 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / P600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (690 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"35 mm²","Of The Auxiliary And Control Circuit With Degree Of Pollution 3 Rated Value":"690 V","Design Of The Miniature Circuit Breaker For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (230 V, 400 A)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/589d2506d1b6308a8f97adbcbc16094e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=630026&mlfb=3RT2344-1AK60"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT2344-1AK60?","answer":"The peer 3RT2028-1BB40 is a smaller S0-size contactor — it will not drop into the same panel footprint without rewiring and re-drilling the DIN rail. The 3RT2344-1AK60 is the S3-size version with higher current capacity and larger main terminal range (6–70 mm² stranded). For a true drop-in, stick with the S3 frame; the 3RT2028 is a different physical size."},{"question":"What compliance documentation does Siemens provide for 3RT2344-1AK60?","answer":"The contactor carries CE marking for the European market and is designed to meet IEC/EN 60947-4-1 for contactors and motor-starters. RoHS and REACH declarations are available from Siemens on request — the product is manufactured after the 2006 RoHS cutoff, so compliance is standard."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2344-1AK60","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/3RT2344-1AK60 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}