{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1446-1AC20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1446-1AC20","canonicalUrl":"https://aoctrl.com/siemens/3RT1446-1AC20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1446-1AC20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1446-1AC20, Size S3, 24 VAC 50/60 Hz coil, screw-type terminals, 22 kW at AC-2 400 V.","salesMarkdown":"The key motor ratings are 22 kW at AC-2 duty at 400 V, 29.9 kW at 500 V, and 38.2 kW at 690 V. Auxiliary contact ratings are provided across common control voltages: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V DC. The DC switching capability at 220 V is notably low — 0.3 A — so if you are switching a DC coil or solenoid at that voltage, verify the inrush does not exceed this. Dimensions are 146 mm high, 70 mm wide, and 139 mm deep. The front has IP20 protection with the cover or box terminal fitted; the terminal body itself is IP00. Wire ranges for the main circuit: solid accepts 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded accepts 2x (10 to 50 mm²). At 40 °C the minimum permissible conductor is 50 mm²; at 60 °C it drops to 35 mm² — derate the wire if the panel runs hot. RoHS compliance date is noted as May 1, 2012, covering the substance prohibitance deadline.","metaTitle":"Siemens 3RT1446-1AC20 SIRIUS Power Contactor, 24 VAC Coil, S","metaDescription":"Siemens 3RT1446-1AC20 SIRIUS power contactor, 24 VAC 50/60 Hz coil, Size S3, screw terminals, 22 kW at AC-2 400 V, 38.2 kW at 690 V. Active production. DIN-rail mount. Sourced to o","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","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":"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":"24 V","at 500 V rated value":"29.9 kW","at 60 Hz rated value":"24 V","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":"27 VA","apparent pick-up power of magnet coil at AC":"298 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":"0.7","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.29","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":"$188.35","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=280686&mlfb=3RT1446-1AC20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1446-1AC20/alternatives.json"},"ai":{"faq":[{"question":"What is the mounting method and panel footprint?","answer":"It mounts on 35 mm or 75 mm DIN rail via screw or snap-on. Dimensions are 146 mm high, 70 mm wide, and 139 mm deep. Side-by-side mounting is allowed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1446-1AC20","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/3RT1446-1AC20 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}}