{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2045-3SP30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2045-3SP30","canonicalUrl":"https://aoctrl.com/siemens/3RT2045-3SP30","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2045-3SP30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, order code 3RT2045-3SP30, size S3, spring-type terminals, 70 mm wide, 1000 AC-3 cycles/h, current lifecycle stage.","salesMarkdown":"Rated for 1000 operating cycles per hour at AC-3 duty, it handles frequent motor starts — think conveyor drives or pump cycling — without derating for thermal accumulation. The 52 a MTBF gives a reliability baseline for lifecycle planning in continuous-process lines. The AC-3 switching frequency of 1000 cycles/h is the headline number for motor duty. AC-3 covers starting and switching off squirrel-cage motors under load — the contactor's main job. That 1000 cycles/h means it can cycle a motor on and off every 3.6 seconds continuously within its rated current, which suits high-throughput automation cells. The AC-4 rating of 300 cycles/h applies to plugging and inching duty; if your application reverses the motor under load or jogs it, that lower figure governs the thermal limit. Size S3 defines the physical frame and the current-carrying capacity range. The contactor accepts solid conductors from 2.5 to 16 mm² and stranded from 6 to 70 mm², so it lands on the heavy side of panel wiring — typical for motor branch circuits above 30 A. The 70 mm width and 152 mm depth fit a standard DIN-rail footprint; the 140 mm height leaves clearance under a 200 mm enclosure lid. The auxiliary switch is included, saving a separate order for feedback or status indication to the PLC.","metaTitle":"Siemens 3RT2045-3SP30 SIRIUS Power Contactor, Size S3, 1000","metaDescription":"Siemens 3RT2045-3SP30 SIRIUS power contactor, size S3, spring-type terminals, 52 a MTBF, 1000 AC-3 cycles/h, 70 mm wide, current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"MTBF":"52 a","Depth":"152 mm","Solid":"2.5 ... 16 mm²","Width":"70 mm","at AC":"38 ... 57 ms","at DC":"38 ... 57 ms","title":"3RT2045-3SP30","Height":"140 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"6 ... 70 mm²","at 50 Hz":"2.4 VA","at 60 Hz":"2.4 VA","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","Rated Value":"175 ... 280 V","description":"power contactor, AC-3e/AC-3, 80 A, 37 kW / 400 V, 3-pole, 175-280 V AC/DC, 50/60 Hz, with integrated varistor, auxiliary contacts: 1 NC, main circuit: screw terminal, control and auxiliary circuit: spring-loaded terminal, size: S3, F-PLC-IN","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-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","Full-Scale Value":"1.1","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 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Inrush Current Peak":"43 A","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":"5 000 000","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":"175 ... 280 V","at 500 V rated value":"2 A","at 60 Hz rated value":"175 ... 280 V","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","Locked-Rotor Current Peak":"1.2 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"0.01 A","Of Main Circuit Rated Value":"8 kV","Safe failure fraction (SFF)":"96 %","Safety-Related Switching On":"No","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)":"01/29/2021","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"10 µs","Locked-Rotor Current Mean Value":"0.4 A","Duration Of Locked-Rotor Current":"150 ms","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":"spring-loaded 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":"3.5 W","closing power of magnet coil at DC":"130 W","holding power of magnet coil at DC":"1.8 W","At Contactor For Auxiliary Contacts":"Spring-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)","category according to EN ISO 13849-1":"2","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)","stop category according to EN 60204-1":"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)","Number Of Poles For Main Current Circuit":"3","voltage at PLC-control input rated value":"24 V","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Recovery Time After Power Failure Typical":"2.1 s","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","safety device type according to IEC 61508-2":"Type B","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC/DC","hardware fault tolerance according to IEC 61508":"0","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","PFHD with high demand rate according to EN 62061":"7.7E-8 1/h","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","SIL Claim Limit (subsystem) according to EN 62061":"2","PFDavg with low demand rate according to IEC 61508":"0.0067","performance level (PL) according to EN ISO 13849-1":"c","type of PLC-control input according to IEC 60947-1":"Type 1","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":"5 000 000","operating range factor of the voltage at PLC-control input":"0.8 ... 1.1","Diagnostics Test Interval By Internal Test Function Maximum":"28 800 s","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":"0","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"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=1415572&mlfb=3RT2045-3SP30"},"ai":{"faq":[{"question":"What is the MTBF of 3RT2045-3SP30?","answer":"The listed MTBF is 52 a, which provides a reliability benchmark for maintenance planning in continuous-operation lines."},{"question":"What is the width and depth of 3RT2045-3SP30?","answer":"Width is 70 mm and depth is 152 mm, fitting a standard DIN-rail footprint inside a 200 mm enclosure."},{"question":"Where can I buy 3RT2045-3SP30?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Submit a request for current pricing and availability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2045-3SP30","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/3RT2045-3SP30 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}