{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1046-1XX10-0UA8","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1046-1XX10-0UA8","canonicalUrl":"https://aoctrl.com/siemens/3RT1046-1XX10-0UA8","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1046-1XX10-0UA8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S3, 3RT1046-1XX10-0UA8, 45 kW at 400 V AC-2, screw-type terminals, IP20 front, current production.","salesMarkdown":"The Siemens SIRIUS 3RT1046-1XX10-0UA8 is a size S3 power contactor rated 45 kW at 400 V in AC-2 duty — the category for slip-ring motor starting, where the contactor makes and breaks the rotor circuit under load. The 45 kW at 400 V AC-2 means this contactor handles a 45 kW slip-ring motor at 400 V without exceeding thermal limits during the longer arcing time of AC-2 (10–15 ms arcing time per). The contactor also carries a 55 kW rating at 500 V and 25.4 kW at 690 V, giving flexibility for different line voltages. The screw-type terminals for the main circuit accept solid or stranded conductors from 2x (2.5... 16 mm²) and up to 2x (10... 50 mm²) stranded, while the auxiliary/control terminals handle 0.5 to 4 mm². That covers most motor-circuit wiring up to 50 mm² without needing adapters. The contactor measures 176 mm high, 70 mm wide, and 152 mm deep — the S3 footprint fits standard motor-starter slots. The IP20 rating on the front (with cover or box terminal) means finger-safe touch protection in a closed panel; the terminal area itself is IP00, so live parts are exposed during wiring and must be de-energized. Auxiliary contact ratings span from 10 A at 24 V down to 0.3 A at 220 V, covering both 24 VDC control circuits and higher-voltage pilot duties. The mechanical life is typical 10 million operations, and the maximum switching frequency ranges from 900 cycles/hour at AC-1 to 250 cycles/hour at AC-4 — the AC-4 limit is the one to watch for plugging or inching duty. The coil operates on 50/60 Hz with a tolerance of 0.8 to 1.1 times rated voltage, so it handles the typical ±10% supply variation. Vibration resistance is 10.6g at 5 ms and 6.2g at 10 ms — adequate for most industrial panels but not for direct mounting on high-vibration machinery without isolation.","metaTitle":"Siemens 3RT1046-1XX10-0UA8 SIRIUS power contactor, S3, 45 kW","metaDescription":"Siemens SIRIUS 3RT1046-1XX10-0UA8 power contactor, size S3, 45 kW AC-2 at 400 V, screw terminals, IP20 front, current production. Available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"152 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":"10.6g / 5 ms, 6.2g / 10 ms","at DC":"14 ... 20 ms","Height":"176 mm","Stranded":"2x (10 ... 50 mm²)","at 60 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","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 500 V rated value":"55 kW","at 60 Hz rated value":"120 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":"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":"21 VA","apparent pick-up power of magnet coil at AC":"300 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":"0.52","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=4173&mlfb=3RT1046-1XX10-0UA8","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1046-1XX10-0UA8/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT1046-1XX10-0UA8 drop into a panel specified around 3RT1044-1FB46?","answer":"Both are SIRIUS contactors, but the 3RT1044-1FB46 is a different size and rating. The 3RT1046-1XX10-0UA8 is size S3; the 3RT1044 is size S2. The mounting rail is the same 35/75 mm DIN, but the footprint and terminal layout differ — rewiring and possibly panel cut-out adjustments would be needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1046-1XX10-0UA8","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/3RT1046-1XX10-0UA8 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}}