{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1045-1AC24-0AA1-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1045-1AC24-0AA1-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RT1045-1AC24-0AA1-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1045-1AC24-0AA1-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S3 power contactor, 3RT1045-1AC24-0AA1-ZX95, 24 V 50/60 Hz coil, screw-type main circuit terminals, 70 mm width, IP20 front.","salesMarkdown":"Its 24 V 50/60 Hz coil matches standard PLC or relay outputs, and the screw-type terminals on the main circuit accept solid conductors up to 4 mm² or stranded up to 50 mm² — enough for the motor power wiring this size handles. This contactor size S3 sits between the smaller S2 and larger S6 frames in the SIRIUS family. The 70 mm width and 146 mm height mean it occupies a standard 35 mm or 75 mm DIN rail slot with room for side-by-side mounting without derating. The 45 kW rating at 500 V (AC-3 duty) tells you this contactor handles a 3-phase induction motor of that power directly — no external soft-start needed for across-the-line starting. The 21.1 kW at 690 V covers higher-voltage drives or pumps where line voltage steps up. Switching frequency matters for cycling loads: rated at 1 000 operations per hour for AC-3 (motor starting) and 900/h for AC-1 (resistive). For rapid jogging or reversing, the AC-4 limit of 300/h is the one to watch. Auxiliary contact ratings cover the control side: 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V. These are the contacts that signal a PLC input or drive a pilot light — the 24 V rating is the one most integrators will use for feedback to the controller. Main circuit terminals are screw-type, accepting solid wire: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). For stranded, it takes 2x (10 to 50 mm²) — that's the range for the motor feeder cables. The front cover carries IP20, meaning finger-safe when closed; the terminal area itself is IP00, so keep live parts behind a panel door. This order code is the one to specify. No cross-reference to a different frame is needed; the S3 size and 24 V coil are common in European-spec panels.","metaTitle":"Siemens 3RT1045-1AC24-0AA1-ZX95 SIRIUS S3 Power Contactor, 2","metaDescription":"Siemens SIRIUS 3RT1045-1AC24-0AA1-ZX95 power contactor, size S3, 24V 50/60Hz coil, screw terminals, 70mm wide. 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","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":"400 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"300 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":"24 V","at 500 V rated value":"45 kW","at 60 Hz rated value":"24 V","at 690 V rated value":"21.1 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":"37 kW","at AC-4 at 400 V rated value":"66 A","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":"82 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":"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":"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=510682&mlfb=3RT1045-1AC24-0AA1-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1045-1AC24-0AA1-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"Width is 70 mm, height 146 mm, depth 188 mm. It mounts on 35 mm or 75 mm DIN rail and can be installed side-by-side without additional spacing."},{"question":"What wire sizes does the main circuit accept?","answer":"Solid wire: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded: 2x (10 to 50 mm²). All terminals are screw-type."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1045-1AC24-0AA1-ZX95","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/3RT1045-1AC24-0AA1-ZX95 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}}