{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT7045-1AP00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT7045-1AP00","canonicalUrl":"https://aoctrl.com/siemens/3RT7045-1AP00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT7045-1AP00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT7045-1AP00, Size S3 contactor, 3-pole main contacts, AC control supply, screw terminals, IP20 front, 690 V insulation voltage.","salesMarkdown":"The Siemens 3RT7045-1AP00 is a Size S3 3-pole contactor from the SIRIUS family, designed for switching three-phase motor loads in control panels. The AC-3 maximum operating rate is 800 switching cycles per hour; the AC-4 maximum is 250 1/h. That means this contactor is specced for motor starting duty (AC-3) at a pace typical of conveyors and pumps, not for high-frequency jogging or reversing (AC-4) where the rate drops to a quarter. For the auxiliary contact circuit at 230 V rated value the current is 6 A; at 400 V it is 3 A; at 690 V it is 1 A. These are the switching capacities for the built-in auxiliary contacts — not the main power path — and they determine what control loads (pilot lights, contactor coils, small relays) the auxiliary circuit can handle at different line voltages. ## Environmental and coordination limits For type of coordination 1, the required upstream fuse is a gL/gG NH 3NA rated 200 A. Installation altitude is limited to 2000 m above sea level.","metaTitle":"Siemens 3RT7045-1AP00 Contactor S3, 3-Pole, AC Coil, 690 V","metaDescription":"Siemens 3RT7045-1AP00 S3 contactor, 3-pole, AC coil, 690 V insulation, IP20 front, screw terminals. Active lifecycle, sourced to order. Get a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"139 mm","Width":"70 mm","Height":"148 mm","at 50 Hz":"0.27","at 60 Hz":"0.31","On The Front":"IP20","During Storage":"-25 ... +70 °C","Of The Terminal":"IP00","at AC-3 maximum":"800 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","During Operation":"-10 ... +55 °C","Fastening Method":"screw and snap-on mounting onto 35 mm and 75 mm standard mounting rail","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S3","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Degree Of Pollution":"3","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"230 V","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","Insulation Voltage Rated Value":"690 V","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","closing power of magnet coil at DC":"0.61 W","holding power of magnet coil at DC":"0.26 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"gL/gG NH 3NA: 200 A","shock resistance with sine pulse at AC":"10.6g / 5 ms, 6.2g / 10 ms","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","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":"acceptability for PLC control (17 V, 5 mA)","Type Of Voltage Of The Control Supply Voltage":"AC","operating voltage at AC-3 rated value maximum":"690 V","operational current at DC-13 at 220 V rated value":"0.3 A","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","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","Connectable Conductor Cross-Section For Main Contacts Finely Stranded With Core End Processing":"50 mm²","Connectable Conductor Cross-Section For Auxiliary Contacts Finely Stranded With Core End Processing":"0.5 ... 2.5 mm²"}},"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=1534169&mlfb=3RT7045-1AP00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT7045-1AP00/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT7045-1AP00 drop into a panel that was specified around 3RT5046-1AM00 without rewiring?","answer":"Both are SIRIUS contactors but in different frame sizes — the 3RT7045-1AP00 is Size S3, while the 3RT5046-1AM00 is a smaller frame. Panel cutouts and DIN-rail spacing may differ; verify the mounting footprint and terminal layout before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT7045-1AP00","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/3RT7045-1AP00 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}}