{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2045-1AV00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2045-1AV00","canonicalUrl":"https://aoctrl.com/siemens/3RT2045-1AV00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2045-1AV00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S3, 3RT2045-1AV00, 77 A at 480 V AC-3, 15 hp at 230 V, screw-type coil terminals, DIN rail snap-on.","salesMarkdown":"At 230 V it's rated 15 hp, so it covers a common three-phase motor range in North American panels. The screw-type coil terminals are a field-serviceable detail: you can swap the coil on site with a headlamp and a screwdriver, no shop bench needed. The depth is 152 mm — that's the dimension that matters when you're laying out gland plates or door clearance. Width is 70 mm, height 140 mm. ## Wiring terminals Main circuit terminals accept solid conductors 2.5 to 16 mm² or stranded 6 to 70 mm² — that's a wide clamping range that covers most motor feeder cables without adapters. Auxiliary switch terminals take 2x (0.5 to 1.5 mm²) solid/stranded or 2x (0.75 to 2.5 mm²). The screw-type coil terminals are standard across the SIRIUS line, so a panel-builder can keep the same screwdriver bit for the whole cabinet. ## Switching performance and mechanical life Rated for 10 million mechanical operations typical. Switching frequency at AC-3 is 1,000 cycles per hour; at AC-1 (resistive) it's 900 cycles per hour; AC-4 (plugging/inching) is 300 cycles per hour. Arcing time is 10 to 20 ms at 50 Hz. The 0.38 value at 50 Hz likely refers to power factor at rated current — a typical motor-load power factor that confirms the AC-3 rating is genuine, not a resistive-only number. ## Environmental and auxiliary specs The auxiliary switch is included. Coil operating current at 24 V is 10 A (likely the contact rating, not the coil draw — verify against your control transformer sizing). At 400 V the auxiliary contacts are rated 3 A.","metaTitle":"Siemens 3RT2045-1AV00 SIRIUS Power Contactor, 77 A at 480 V","metaDescription":"Siemens 3RT2045-1AV00 SIRIUS power contactor, size S3, rated 77 A at 480 V AC-3, 15 hp at 230 V. Screw terminals, DIN rail snap-on. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"152 mm","Solid":"2.5 ... 16 mm²","Width":"70 mm","at AC":"10 ... 21 ms","Height":"140 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"6 ... 70 mm²","at 50 Hz":"0.38","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","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","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","at AC-3e maximum":"1 000 1/h","For Main Contacts":"10 ... 2","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)","Product Brand Name":"SIRIUS","Product Designation":"Power contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"15 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.8 A","at 480 V rated value":"77 A","at 50 Hz rated value":"400 V","at 500 V rated value":"2 A","at 600 V rated value":"62 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","at 1000 V rated value":"37 kW","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"7.5 hp","at 200/208 V rated value":"25 hp","at 220/230 V rated value":"30 hp","at 460/480 V rated value":"60 hp","at 575/600 V rated value":"60 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","Safety-Related Switching On":"Yes","at AC-3 rated value maximum":"1 000 V","at AC in hot operating state":"15.9 W","at AC-2 at 400 V rated value":"37 kW","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"66 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"03/01/2017","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"110 A","at AC-5b up to 400 V rated value":"80 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 160A (690V,100kA), aM: 80A (690V,100kA), BS88: 125A (415V,80kA)","Without Load Current Share Typical":"22 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 250 A (690 V, 100 kA), aM: 160 A (690 V, 100 kA), BS88: 200 A (415 V, 80 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"5.3 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","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)","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC","Limited To 1 S Switching At Zero Current Maximum":"1 500 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"1 186 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"851 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"538 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"423 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / P600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"1 000 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"50 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","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":"https://cdn.aoctrl.com/7d28fa7380658c541019ac8751bc4da6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629794&mlfb=3RT2045-1AV00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2045-1AV00/alternatives.json"},"ai":{"faq":[{"question":"Will the 3RT2045-1AV00 drop into a panel wired for the 3RT1054-1AB36?","answer":"The 3RT2045-1AV00 is a size S3 contactor with a 70 mm width and 152 mm depth, while the 3RT1054-1AB36 is a different frame size. Panel fit depends on the existing mounting hole pattern and DIN rail layout — verify the dimensions before swapping. The 3RT2045-1AV00 mounts on 35 mm DIN rail per DIN EN 60715, same as the 3RT1054 series, so if the rail is already there, it may fit with clearance adjustments."},{"question":"What is the depth of the 3RT2045-1AV00?","answer":"The depth is 152 mm. Width is 70 mm, height is 140 mm."},{"question":"What solid conductor range does the 3RT2045-1AV00 accept?","answer":"Main circuit terminals accept solid conductors from 2.5 mm² up to 16 mm². Stranded conductors range from 6 mm² up to 70 mm²."},{"question":"What compliance documentation does Siemens provide for the 3RT2045-1AV00?","answer":"As a standard SIRIUS catalog item, this contactor carries CE marking for the European market and is designed to meet IEC/EN 60947-4-1. RoHS and REACH compliance declarations are available from Siemens documentation. Specific UL/CSA listings should be confirmed against the nameplate or Siemens technical support for the exact variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2045-1AV00","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/3RT2045-1AV00 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}}