{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1045-3AP06","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1045-3AP06","canonicalUrl":"https://aoctrl.com/siemens/3RT1045-3AP06","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1045-3AP06","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S3, 3RT1045-3AP06, 45 kW at 500 V AC-3, screw terminals, snap-on 35/75 mm rail, IP20 front.","salesMarkdown":"## Siemens 3RT1045-3AP06 SIRIUS Power Contactor — S3 Frame, 45 kW at 500 V The Siemens 3RT1045-3AP06 is a SIRIUS power contactor in the S3 frame size, rated for 45 kW at 500 V in AC-3 duty (standard motor switching). That 45 kW figure at 500 V tells you it handles a 3-phase induction motor up to that load — common for medium conveyor drives, pumps, or compressor motors in a 400–500 V line. The contactor uses screw-type terminals on the main circuit, accepts solid wire 2x (0.25 to 2.5 mm²) and stranded 2x (10 to 50 mm²) — so you can land a 50 mm² cable without adapters. ## Switching Duty & Mechanical Life AC-3 switching is the heavy lifting — 1000 operations per hour maximum, which is typical for a contactor this size. AC-4 (reversing / inching) caps at 300 ops/h, and AC-1 (resistive) at 900 ops/h. ## Environmental & Installation Operating temperature range is -25 to +60 °C, storage -55 to +80 °C — so it's fine for unheated enclosures in temperate climates, but derate if you're above 60 °C ambient.","metaTitle":"Siemens 3RT1045-3AP06 SIRIUS Power Contactor, S3, 45 kW at 5","metaDescription":"Siemens 3RT1045-3AP06 SIRIUS power contactor, size S3, 45 kW at 500 V AC-3, screw terminals, snap-on 35/75 mm rail, IP20 front, current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"139 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"90 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":"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 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","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":"82 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=472493&mlfb=3RT1045-3AP06","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1045-3AP06/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 3RT1045-3AP06?","answer":"The depth is 139 mm. The contactor also has a width of 90 mm and height of 146 mm, fitting the S3 frame."},{"question":"What wire sizes does 3RT1045-3AP06 accept on the main terminals?","answer":"Solid wire: 2x (0.25 to 2.5 mm²). Stranded wire: 2x (10 to 50 mm²). Also accepts 2x (2.5 to 16 mm²) solid or stranded. Terminals are screw-type."},{"question":"Will 3RT1045-3AP06 drop into a panel built for 3RT1044-1FB46?","answer":"Both are S3 frame size with the same mounting (screw and snap-on onto 35/75 mm rail) and side-by-side mounting allowed. The main difference is the coil voltage — verify the coil rating of the 3RT1044-1FB46 against your control voltage before swapping."},{"question":"What compliance documentation does Siemens provide for 3RT1045-3AP06?","answer":"The part carries RoHS compliance (substance prohibitance date 05/01/2012). Standard Siemens documentation includes CE declaration, IEC/EN 60947-4-1 compliance, and UL/CSA listings — confirm specific UL file number with your order."},{"question":"Where can I buy 3RT1045-3AP06 and how is it quoted?","answer":"This part is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — volume pricing drops with quantity, friend price for you."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1045-3AP06","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/3RT1045-3AP06 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}}