{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1446-1AH00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1446-1AH00","canonicalUrl":"https://aoctrl.com/siemens/3RT1446-1AH00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1446-1AH00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S3 power contactor, 3RT1446-1AH00, 50 kW at 400 V AC-3, screw-type terminals, 70 mm width, IP20 front, snap-on 35 mm DIN rail.","salesMarkdown":"The Siemens 3RT1446-1AH00 is a SIRIUS S3 power contactor — the core switching element for motor loads in a control panel. Rated at 50 kW at 400 V AC-3 (and 148 kW at 690 V AC-3), it handles the heavy lifting on pumps, compressors, and conveyors. The 1,000 V rated insulation voltage gives headroom for 690 V distribution systems without derating the main circuit. Mounts on 35 mm or 75 mm DIN rail — screw and snap-on both work. At 70 mm wide per contactor, it's a standard S3 footprint; plan for that width when laying out the enclosure backplate. Main power terminals are screw-type, accepting 2x (10…50 mm²) stranded copper — that's good for the full current rating without needing a lug adaptor. Control wiring lands on the front: solid or stranded 0.5…4 mm², two wires per clamp. Strip length and torque are standard for the SIRIUS family; no special tooling required. IP20 on the front with the supplied cover/box terminal keeps fingers out during commissioning. The terminal body itself is IP00, so the panel enclosure must provide the overall IP rating. ## Coil and Switching Performance Coil operates at 50 Hz, 48 V rated value. Pickup time at AC is 10…25 ms; arcing time runs 10…15 ms. That's fast enough for most motor starting sequences — the contactor closes before the inrush current peaks. At 24 V DC the coil draws 10 A, so verify your control transformer sizing if you're running a bank of these. At AC-1 maximum 650 operations per hour, it's comfortable in continuous process duty.","metaTitle":"Siemens 3RT1446-1AH00 SIRIUS Power Contactor, S3, 50 kW at 4","metaDescription":"Siemens 3RT1446-1AH00 SIRIUS S3 power contactor, 50 kW at 400 V AC-3. Screw terminals, 70 mm wide, IP20 front. Available to order against RFQ.","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":"70 mm","at AC":"10 ... 25 ms","Height":"146 mm","Stranded":"2x (10 ... 50 mm²)","at 50 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","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","at AC-1 maximum":"650 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":"48 V","at 500 V rated value":"29.9 kW","at 690 V rated value":"38.2 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"22 kW","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"50 mm²","at 60 °C minimum permissible":"35 mm²","Insulation Voltage Rated Value":"1 000 V","at 230 V at 60 °C rated value":"50 kW","at 690 V at 60 °C rated value":"148 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 gR: 250 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":"3","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":"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 (10 ... 35 mm²)","apparent holding power of magnet coil at AC":"22 VA","apparent pick-up power of magnet coil at AC":"270 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":"0.68","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.27","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=439802&mlfb=3RT1446-1AH00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1446-1AH00/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT1446-1AH00?","answer":"The 3RT1044-1FB46 is a smaller SIRIUS contactor (S0 frame) with different terminal arrangements and lower current ratings. It will not drop into the same panel footprint without rewiring — the S3 frame is 70 mm wide versus the S0's narrower profile. Stick with the S3 frame for a direct mechanical and electrical swap."},{"question":"What compliance documentation is available for 3RT1446-1AH00?","answer":"The part carries a substance prohibitance date of 05/01/2012, indicating RoHS and REACH compliance. Standard Siemens SIRIUS documentation includes a CE declaration and UL/CSA file numbers available on request."},{"question":"Where can I buy 3RT1446-1AH00 and get current pricing?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for your target quantity and ship-to location."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1446-1AH00","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/3RT1446-1AH00 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}}