{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1446-1AB00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1446-1AB00","canonicalUrl":"https://aoctrl.com/siemens/3RT1446-1AB00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1446-1AB00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S3, 3RT1446-1AB00, rated 22 kW at AC-2 400 V, screw-type terminals, snap-on mounting.","salesMarkdown":"The Siemens SIRIUS 3RT1446-1AB00 is a size S3 power contactor rated for motor switching at 22 kW under AC-2 duty at 400 V, and delivers 38.2 kW at 690 V. The AC-2 rating at 400 V (22 kW) is the figure that governs motor switching for slip-ring or wound-rotor motors — AC-2 duty involves starting and plugging, so the contactor is designed for higher inrush and longer arcing than a general-purpose AC-3 unit. The 690 V rating (38.2 kW) covers higher-voltage distribution common in European industrial plants. At 60 °C ambient, the contactor derates to 50 kW at 230 V and 148 kW at 690 V, so if the panel runs hot, use the 60 °C column for sizing. Mechanical life is typical 10,000,000 operations, and the maximum switching rate at AC-1 resistive load is 650 cycles per hour. The coil operates at 50 Hz, 24 V, with a pick-up dropout range of 0.8 to 1.1 times rated voltage at 50 Hz. The auxiliary contact ratings cover 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V, so the same contact block can handle PLC-level signals or small relay coils without a separate interface. ## Installation and wiring Screw-type terminals on the main circuit accept stranded conductors up to 2x 50 mm², and solid conductors from 0.5 mm² to 4 mm² in the control circuit. The terminal block itself is rated IP00 (open), but with the supplied cover or box terminal, the front face achieves IP20 — finger-safe for live panel access. At 40 °C ambient, the minimum permissible conductor cross-section is 50 mm²; at 60 °C, it drops to 35 mm² — this is a thermal derating guide for the main power path, not a wiring restriction. The insulation voltage is rated 1,000 V, which means the contactor can be used in 690 V systems with adequate clearance.","metaTitle":"Siemens SIRIUS 3RT1446-1AB00 power contactor, S3, 22 kW AC-2","metaDescription":"Siemens SIRIUS 3RT1446-1AB00 power contactor, size S3, rated 22 kW at AC-2 400 V, 38.2 kW at 690 V. Screw terminals, snap-on 35/75 mm rail. Active production, 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":"24 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=509024&mlfb=3RT1446-1AB00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1446-1AB00/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does this contactor carry?","answer":"RoHS compliance date is May 1, 2012. The insulation voltage is rated 1,000 V, and the pollution degree is 3, which aligns with IEC 60947-4-1 requirements for industrial motor control."},{"question":"What is the closest functional second-source to this contactor?","answer":"The 3RT1034-1AN60-1AA0 is a smaller frame (S0) contactor from the same SIRIUS family, but it does not match the S3 frame size or the 22 kW AC-2 rating of the 3RT1446-1AB00. A panel wired for the S3 footprint would require mechanical rework to accept the smaller unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1446-1AB00","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/3RT1446-1AB00 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}}