{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1046-1AH04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1046-1AH04","canonicalUrl":"https://aoctrl.com/siemens/3RT1046-1AH04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1046-1AH04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, S3 size, 3RT1046-1AH04, 55 kW at 500 V AC-3, screw terminals, DIN rail mount, IP20 front.","salesMarkdown":"## Siemens 3RT1046-1AH04 SIRIUS Power Contactor — S3, 55 kW at 500 V The Siemens 3RT1046-1AH04 is a SIRIUS power contactor in the S3 frame size, rated for motor switching up to 55 kW at 500 V in AC-3 duty. That 55 kW figure at 500 V is the headline rating for this part — it tells you the maximum three-phase motor load it can handle under the standard IEC utilization category for squirrel-cage motors. In AC-2 at 400 V it's rated 45 kW, and in AC-4 at 400 V it's good for 80 A, so it covers slip-ring motor reversing and plugging duty as well. Dimensions are 146 mm high, 70 mm wide, 188 mm deep — the S3 frame is a common footprint in Siemens SIRIUS contactor ranges. Screw terminals on the main current circuit accept a wide range of conductor sizes: solid wire from 2x 0.5 mm² up to 2x 4 mm², and stranded wire from 2x 10 mm² up to 2x 50 mm². The intermediate range covers 2x 2.5 to 16 mm² for both solid and stranded. That's enough capacity for the full rated current without needing terminal adapters or reducers. ## Switching Performance and Life Electrical life depends on the load: at AC-1 (resistive) it can manage 900 operations per hour, at AC-3 (motor running) 850 ops/h, at AC-2 (slip-ring motor start) 350 ops/h, and at AC-4 (plugging/reversing) 250 ops/h. For the coil, at 24 V rated value it draws 10 A, at 60 V it draws 2 A, at 110 V it draws 1 A, at 220 V it draws 0.3 A, at 230 V it draws 6 A, and at 400 V it draws 3 A — these are the switching current ratings for the auxiliary contacts or coil circuit, not the main power path.","metaTitle":"Siemens 3RT1046-1AH04 SIRIUS Power Contactor, 55 kW at 500 V","metaDescription":"Siemens 3RT1046-1AH04 SIRIUS power contactor, S3 size, 55 kW at 500 V AC-3. Screw terminals, DIN rail mount, IP20 front. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"188 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":"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":"48 V","at 500 V rated value":"55 kW","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":"screw-type 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 (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":"760 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":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","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=214139&mlfb=3RT1046-1AH04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1046-1AH04/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for 3RT1046-1AH04?","answer":"The main motor rating is 55 kW at 500 V in AC-3 duty. It also carries 45 kW at 400 V in AC-2 and 80 A at 400 V in AC-4. The contactor is S3 frame size, screw terminals, DIN rail mount, IP20 front."},{"question":"Where can I buy 3RT1046-1AH04?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What compliance documentation does Siemens provide for 3RT1046-1AH04?","answer":"RoHS compliance is documented with a substance prohibition date of 05/01/2012. The product carries the Siemens SIRIUS brand and is designed to IEC standards for industrial control equipment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1046-1AH04","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/3RT1046-1AH04 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}}