{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1446-1AD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1446-1AD00","canonicalUrl":"https://aoctrl.com/siemens/3RT1446-1AD00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1446-1AD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1446-1AD00 power contactor, size S3, 50 Hz, 42 V 50 Hz coil, screw-type terminals, IP20 front protection, 70 x 146 x 139 mm (WxHxD).","salesMarkdown":"It carries a 42 V 50 Hz coil and is rated for AC-2 duty at 22 kW at 400 V — that covers slip-ring motor starting and reversing applications where the contactor makes and breaks both starting and running currents. For AC-3 direct-on-line squirrel-cage motors, it handles 29.9 kW at 500 V and 38.2 kW at 690 V. The 70 mm width, 146 mm height, and 139 mm depth mean it occupies one standard DIN-rail module position plus some overhang — plan for the depth when sizing the enclosure gland plate. Solid conductors: 2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²), max. 2x (0.75... 4 mm²). Stranded: 2x (10... 50 mm²). For mixed solid/stranded: 2x (2.5... 16 mm²). At 40 °C ambient, the minimum permissible conductor is 50 mm²; at 60 °C it derates to 35 mm². The front terminals are rated IP20 with the cover or box terminal installed — finger-safe for panel access. The terminal body itself is IP00, so live parts are exposed behind the panel door. The coil is rated 42 V at 50 Hz with an operating range of 0.8 to 1.1 times rated voltage. Operating time at AC is 10 to 25 ms, arcing time 10 to 15 ms. For DC switching on auxiliary contacts: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, 6 A at 230 V, 3 A at 400 V. The maximum switching rate for AC-1 resistive loads is 650 cycles per hour.","metaTitle":"Siemens 3RT1446-1AD00 SIRIUS Power Contactor, S3, 50 Hz, 42","metaDescription":"Siemens SIRIUS 3RT1446-1AD00 power contactor, size S3, 50 Hz, 42 V coil. AC-2 22 kW at 400 V. Screw terminals, IP20 front. Current lifecycle stage. Sourced to order.","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":"42 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=312719&mlfb=3RT1446-1AD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1446-1AD00/alternatives.json"},"ai":{"faq":[{"question":"What are the key power ratings for this contactor?","answer":"AC-2 motor power at 400 V is 22 kW. AC-3 motor power at 500 V is 29.9 kW and at 690 V is 38.2 kW. At 230 V 60 °C it is rated 50 kW, and at 690 V 60 °C it is rated 148 kW."},{"question":"What is the mounting method and dimensions?","answer":"Screw or snap-on mounting onto 35 mm and 75 mm standard mounting rail. Dimensions are 70 mm width, 146 mm height, 139 mm depth."},{"question":"What is the protection rating?","answer":"IP20 on the front with cover or box terminal installed. The terminal body itself is IP00."},{"question":"What compliance documentation is available?","answer":"RoHS compliance date is 05/01/2012. The contactor carries a rated insulation voltage of 1 000 V and is rated for pollution degree 3."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1446-1AD00","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/3RT1446-1AD00 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}}