{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1446-1AF00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1446-1AF00","canonicalUrl":"https://aoctrl.com/siemens/3RT1446-1AF00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1446-1AF00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1446-1AF00 power contactor, size S3, 70 mm width, screw-type terminals, AC-1 50 kW at 230 V, AC-3 29.9 kW at 500 V, 1 000 V insulation voltage.","salesMarkdown":"Rated insulation voltage is 1 000 V, and the contactor carries AC-1 resistive ratings of 50 kW at 230 V (at 60 °C) and 148 kW at 690 V (at 60 °C). For motor duty, AC-3 ratings reach 29.9 kW at 500 V and 38.2 kW at 690 V. Mechanical life is listed at 10 000 000 cycles typical, and the operating temperature range is -25 to +60 °C. ## Sizing and duty-cycle notes The AC-1 resistive rating at 230 V is 50 kW at 60 °C, and at 690 V it reaches 148 kW at 60 °C — these are the numbers to use for heater or lighting banks, not the motor-duty figures. Coil pick-up and drop-out times at AC are 10 to 25 ms. The contactor is 70 mm wide, 146 mm high, and 139 mm deep. Side-by-side mounting is permitted, which saves rail space in dense panels. Screw terminals accept solid conductors from 0.5 to 4 mm² (two per clamp) and stranded conductors from 10 to 50 mm² (two per clamp). For the main current circuit, minimum permissible cross-section at 40 °C is 50 mm²; at 60 °C it drops to 35 mm².","metaTitle":"Siemens 3RT1446-1AF00 SIRIUS Power Contactor, S3, 70mm","metaDescription":"Siemens SIRIUS 3RT1446-1AF00 power contactor, size S3, 70mm width, screw terminals. Rated AC-1 50kW at 230V, AC-3 29.9kW at 500V. Active production, available to order. Submit 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":"110 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=474805&mlfb=3RT1446-1AF00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1446-1AF00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1446-1AF00 and what is the lead time?","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 price and lead time."},{"question":"What is the closest functional second-source for 3RT1446-1AF00?","answer":"The peer 3RT5046-1AM00 is a similar SIRIUS power contactor in the same size S3 frame, but it uses a different coil voltage and auxiliary configuration. Verify the coil rating and auxiliary contact arrangement before substituting."},{"question":"Will 3RT1446-1AF00 drop into a panel specified around 3RT1044-1FB46?","answer":"The 3RT1446-1AF00 is a size S3 contactor (70 mm wide) while the 3RT1044-1FB46 is a size S2 (55 mm wide). The footprint and mounting rail are different — it will not drop in without panel modifications."},{"question":"What compliance documentation does this brand provide for 3RT1446-1AF00?","answer":"The part carries a RoHS substance prohibition date of May 1, 2012, indicating compliance with the EU RoHS directive. Standard Siemens SIRIUS documentation includes the declaration of conformity and CE marking."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1446-1AF00","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/3RT1446-1AF00 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}}