{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1446-3XX40-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1446-3XX40-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1446-3XX40-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1446-3XX40-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, Size S3 power contactor, 3RT1446-3XX40-0LA2, 29.9 kW at 500 V AC-3, screw-type main terminals, varistor surge suppression, screw and snap-on mounting onto 35 mm and 75 mm rail.","salesMarkdown":"It carries 29.9 kW at 500 V and 38.2 kW at 690 V in AC-3 duty, so it handles the common 400 V to 690 V motor loads you see on pump, fan, and conveyor circuits. Main circuit connections are screw-type terminals sized for solid or stranded wire up to 50 mm² at the AC-1 maximum rating, with the control circuit accepting 2x (0.25... 2.5 mm²) solid. ## DC switching and arc performance For DC loads the contactor is rated at 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V — a useful curve for switching DC control circuits or small DC motors in the same panel. ## Mounting and wiring clearances Side-by-side mounting is permitted, which saves rail space when grouping multiple contactors. Main terminals accept 2x (10... 50 mm²) stranded or 2x (2.5... 16 mm²) solid/stranded, with AWG equivalents of 2x (10... 1/0). Control terminals take 2x (0.25... 2.5 mm²) solid.","metaTitle":"Siemens 3RT1446-3XX40-0LA2 SIRIUS Power Contactor, Size S3,","metaDescription":"Siemens SIRIUS 3RT1446-3XX40-0LA2 Size S3 power contactor, rated 29.9 kW at 500 V AC-3. Screw terminals, varistor suppression, DIN-rail mount. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"191 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"93 mm","at DC":"14 ... 20 ms","Height":"145 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"2x (10 ... 50 mm²)","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"32 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","at AC-1 maximum":"650 1/h","lifecycle_stage":"current","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm and 75 mm standard mounting rail","Full-Scale Value":"1.25","Size Of Contactor":"S3","Solid Or Stranded":"2x (2.5 ... 16 mm²)","Product Brand Name":"SIRIUS","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 500 V rated value":"29.9 kW","at 690 V rated value":"38.2 kW","Instantaneous Contact":"0","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at maximum AC-1 rated value":"50 mm²","at AC-2 at 400 V rated value":"22 kW","Substance Prohibitance (Date)":"05/01/2012","Design Of The Surge Suppressor":"with varistor","at AWG cables for main contacts":"2x (10 ... 1/0)","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"Fuse gR: 250 A","closing power of magnet coil at DC":"19 W","holding power of magnet coil at DC":"12 W","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","voltage at PLC-control input rated value":"24 V","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","contact rating of auxiliary contacts according to UL":"A600 / Q600","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":"fuse gL/gG: 10 A","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=455544&mlfb=3RT1446-3XX40-0LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1446-3XX40-0LA2/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1446-3XX40-0LA2 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"What are the key motor power ratings for this contactor?","answer":"It is rated 29.9 kW at 500 V and 38.2 kW at 690 V in AC-3 duty, which covers the majority of 400 V to 690 V three-phase motor applications in industrial plants."},{"question":"What compliance documentation does this contactor carry?","answer":"The substance prohibitance date of 05/01/2012 confirms RoHS compliance. The SIRIUS brand typically provides CE, UL, and CSA certifications per the product family — verify the specific certificate for your jurisdiction with the order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1446-3XX40-0LA2","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/3RT1446-3XX40-0LA2 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}}