{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1046-3AF04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1046-3AF04","canonicalUrl":"https://aoctrl.com/siemens/3RT1046-3AF04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1046-3AF04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1046-3AF04, size S3, 45 kW AC-2 at 400 V, 80 A AC-4, screw-type terminals, DIN rail snap-on mounting.","salesMarkdown":"## SIRIUS 3RT1046-3AF04 — Power Contactor, Size S3 The Siemens 3RT1046-3AF04 is a SIRIUS power contactor in frame size S3, rated for motor switching at 45 kW in AC-2 duty at 400 V and 80 A in AC-4 duty at 400 V. That AC-4 rating matters for reversing or plugging applications where the contactor opens under full locked-rotor current — the 80 A figure is the real-world limit for those harsh cycles, not the thermal continuous current. It mounts on 35 mm or 75 mm DIN rail via screw and snap-on fastening, and the screw-type terminals for the main circuit accept 2x (10... 50 mm²) stranded or 2x (0.25... 2.5 mm²) solid wire. The front terminals carry IP20 protection with the cover or box terminal installed; the terminal body itself is IP00. Dimensions are 146 mm height, 70 mm width, and 188 mm depth — that depth is the dimension that often catches panel layouts when swapping from a smaller frame. ## Duty Ratings & Switching Performance The contactor is rated for 50 Hz operation with a rated control supply voltage of 110 V at 50 Hz. Mechanical life is typical 10,000,000 operations. Arcing time spans 10 to 15 ms, with a total on-delay of 10 to 25 ms at AC. The auxiliary contact ratings at 24 V are 10 A, stepping down to 0.3 A at 220 V and 6 A at 230 V — these govern the control circuit interface, not the main power path. ## Integration Note Wire termination: main circuit screw terminals accept 10–50 mm² stranded (2 conductors) or 0.25–2.5 mm² solid (2 conductors). The control circuit terminals accept 2.5–16 mm² solid or stranded (2 conductors). Strip lengths and torque values follow the standard SIRIUS terminal specifications for the S3 frame. The 188 mm depth is the dimension to verify against enclosure depth and gland plate clearance — it is deeper than the S2 frame contactors. Panel layouts originally dimensioned for a 3RT1044 frame (S2) may need a deeper enclosure or a spacer bracket.","metaTitle":"Siemens 3RT1046-3AF04 SIRIUS Power Contactor, 45 kW AC-2, 80","metaDescription":"Siemens 3RT1046-3AF04 SIRIUS power contactor, size S3, 45 kW AC-2 at 400 V, 80 A AC-4. Screw terminals, DIN rail mount. Active lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"188 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","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":"110 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":"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":"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=476006&mlfb=3RT1046-3AF04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1046-3AF04/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT1046-3AF04 drop into a panel specified around 3RT1044-1FB46?","answer":"The 3RT1046 is an S3 frame (146×70×188 mm) versus the S2 frame of the 3RT1044. The 188 mm depth is the critical dimension — verify enclosure depth and gland plate clearance before substitution. Terminal wire ranges differ between the frames; check the main circuit terminal accepts your existing cable size."},{"question":"What compliance documentation does 3RT1046-3AF04 carry?","answer":"RoHS compliance is documented with a substance prohibition date of 05/01/2012. The product is designed to meet applicable IEC and UL standards for power contactors in the SIRIUS range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1046-3AF04","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/3RT1046-3AF04 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}}