{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1046-3AN20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1046-3AN20","canonicalUrl":"https://aoctrl.com/siemens/3RT1046-3AN20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1046-3AN20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S3, 3RT1046-3AN20, rated 55 kW at 500 V AC, 25.4 kW at 690 V AC, screw terminals, snap-on mounting on 35/75 mm DIN rail.","salesMarkdown":"## Siemens SIRIUS 3RT1046-3AN20 — Power Contactor, Size S3 Rated operational current for AC-3 duty is the key selection figure: at 400 V it carries 3 A, at 690 V it carries 25.4 kW. The mechanical life is typical 10,000,000 operations, and the maximum switching rate varies by duty — 850 cycles per hour in AC-3, 250 in AC-4. These ratings define the motor load it can handle in a standard industrial control panel. Mounts on 35 mm or 75 mm DIN rail with screw or snap-on fastening. Main circuit wiring accepts solid conductors 2x (0.25 to 2.5 mm²) or stranded 2x (10 to 50 mm²). The screw terminals are IP00 at the connection point, while the front face with cover/box terminal achieves IP20 — adequate for finger-safe touch protection inside an enclosed panel. ## Duty Cycle and Thermal Limits Maximum switching rates: 900 cycles/hour in AC-1 (resistive), 850 in AC-3 (motor starting), 350 in AC-2, and 250 in AC-4 (plugging/inching). Rated control supply voltage is 220 V at both 50 Hz and 60 Hz, with an operating range of 0.8 to 1.1 times rated at 50 Hz and 0.85 to 1.1 at 60 Hz. The contactor draws 37 W at 1000 V rated value. Coil ratings for DC control: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, and 6 A at 230 V.","metaTitle":"Siemens 3RT1046-3AN20 SIRIUS Power Contactor, 55 kW at 500 V","metaDescription":"Siemens SIRIUS 3RT1046-3AN20 power contactor, size S3. Rated 55 kW at 500 V, 25.4 kW at 690 V. Screw terminals, snap-on 35/75 mm rail. Current lifecycle, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"139 mm","Solid":"2x (0.25 ... 2.5 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":"900 1/h","at AC-2 maximum":"350 1/h","at AC-3 maximum":"850 1/h","at AC-4 maximum":"250 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":"220 V","at 500 V rated value":"55 kW","at 60 Hz rated value":"220 V","at 690 V rated value":"25.4 kW","Side-By-Side Mounting":"Yes","at 1000 V rated value":"37 W","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"45 kW","at AC-4 at 400 V rated value":"80 A","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":"38 kW","at 690 V at 60 °C rated value":"114 kW","at 1000 V at 60 °C rated value":"98 W","at AWG cables for main contacts":"2x (10 ... 1/0)","For Auxiliary And Control Circuit":"spring-loaded terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 160 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 (24 ... 14)","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 (0.25 ... 1.5 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":"760 A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 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":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=248591&mlfb=3RT1046-3AN20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1046-3AN20/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT1046-3AN20?","answer":"The closest functional peer is the 3RT1044-1FB46, which is a smaller frame size. The 3RT1046-3AN20 is size S3; the 3RT1044-1FB46 is a size S2. Panel rewiring would be required due to different terminal layouts and mounting footprint — they are not drop-in interchangeable."},{"question":"What is the depth of 3RT1046-3AN20?","answer":"The depth is 139 mm."},{"question":"What solid conductor sizes does the main circuit accept?","answer":"The main circuit screw terminals accept solid conductors 2x (0.25 to 2.5 mm²)."},{"question":"Where can I buy 3RT1046-3AN20?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1046-3AN20","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/3RT1046-3AN20 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}}