{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1046-3AM20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1046-3AM20","canonicalUrl":"https://aoctrl.com/siemens/3RT1046-3AM20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1046-3AM20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S3, 3RT1046-3AM20, 55 kW at 500 V AC-3, screw-type terminals, IP20 front, snap-on 35/75 mm DIN rail.","salesMarkdown":"## SIRIUS 3RT1046-3AM20 — Power Contactor, Size S3, 55 kW at 500 V The Siemens 3RT1046-3AM20 is a SIRIUS power contactor in size S3, rated for motor switching at 55 kW at 500 V AC-3 and 25.4 kW at 690 V AC-3. Per the datasheet, it achieves 850 operating cycles per hour at AC-3, which supports high-duty-cycle conveyor or pump applications without exceeding thermal limits. The IP20 rating on the front with cover or box terminal means the front face is finger-safe for panel access; the terminal area itself is IP00, so live parts are exposed during wiring and the panel door must interlock or require a tool to open. ## Wiring and Terminal Specifications Main current circuit connections use screw-type terminals. The terminal accepts solid conductors of 2x (0.25 to 2.5 mm²) and stranded conductors of 2x (10 to 50 mm²), with an intermediate range of 2x (2.5 to 16 mm²) for either solid or stranded. This covers control wiring through to motor power cables up to 50 mm² stranded. Dimensions are 146 mm height, 70 mm width, and 139 mm depth — the 139 mm depth is the front-to-back panel space required, including the contactor body and any box terminal cover.","metaTitle":"Siemens 3RT1046-3AM20 SIRIUS Power Contactor, 55 kW at 500 V","metaDescription":"Siemens 3RT1046-3AM20 SIRIUS power contactor, size S3, 55 kW at 500 V AC-3, screw terminals, IP20 front, snap-on 35 mm DIN rail. Current 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 (0.25 ... 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":"208 V","at 500 V rated value":"55 kW","at 60 Hz rated value":"208 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=287626&mlfb=3RT1046-3AM20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1046-3AM20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1046-3AM20 and get a price?","answer":"The 3RT1046-3AM20 is sourced 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 commitment."},{"question":"What are the key ratings for 3RT1046-3AM20?","answer":"The contactor is rated 55 kW at 500 V AC-3 and 25.4 kW at 690 V AC-3 for motor loads. Maximum operating frequency is 850 cycles per hour at AC-3. Mechanical endurance is 10,000,000 cycles typical."},{"question":"What compliance documentation does Siemens provide for 3RT1046-3AM20?","answer":"The product carries the SIRIUS brand and is specified with pollution degree 3 for industrial environments. The manufacturer provides datasheets and declarations of conformity; specific RoHS, REACH, and UL documentation is available on request as part of the RFQ process."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1046-3AM20","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/3RT1046-3AM20 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}}