{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1045-1AL20-ZW98","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1045-1AL20-ZW98","canonicalUrl":"https://aoctrl.com/siemens/3RT1045-1AL20-ZW98","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1045-1AL20-ZW98","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S3, 3RT1045-1AL20-ZW98, 70 mm width, screw-type terminals, IP20 front, screw and snap-on mounting.","salesMarkdown":"The main current circuit uses screw-type terminals, rated for solid conductors up to 2x 4 mm² and stranded up to 2x 50 mm² — a range that covers most motor branch feeds up to the contactor's rated power. Per the datasheet, the operating temperature span is -25 to +60 °C, with storage down to -55 °C; pollution degree 3 means it tolerates conductive dust in typical factory environments. Footprint is 70 mm wide by 146 mm tall by 139 mm deep. The IP20 rating on the front with the cover or box terminal installed means the live parts are finger-safe inside the enclosure; the terminal itself is IP00, so the panel door must be closed before energizing.","metaTitle":"Siemens 3RT1045-1AL20-ZW98 SIRIUS Power Contactor, Size S3","metaDescription":"Siemens 3RT1045-1AL20-ZW98 SIRIUS power contactor, size S3, 70 mm wide, screw terminals, IP20 front. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"139 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":"230 V","at 500 V rated value":"45 kW","at 60 Hz rated value":"230 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":"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=204994&mlfb=3RT1045-1AL20-ZW98","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1045-1AL20-ZW98/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3RT1045-1AL20-ZW98?","answer":"Submit an RFQ through this listing; availability and current pricing are confirmed at quote time."},{"question":"Will 3RT1045-1AL20-ZW98 drop into a panel specified around 3RT1044-1FB46 without rewiring?","answer":"Both are SIRIUS size S3 contactors with the same DIN-rail footprint and screw-terminal main circuit, so the mechanical fit and terminal layout are compatible. Verify the coil voltage and auxiliary contact configuration on your specific variant before swapping."},{"question":"What compliance documentation is available for this contactor?","answer":"As a SIRIUS product, it carries the standard Siemens declarations (CE, UKCA, EAC) and is designed to meet IEC 60947-4-1. RoHS and REACH declarations are available from Siemens on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1045-1AL20-ZW98","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/3RT1045-1AL20-ZW98 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}}