{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1045-1AG60","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1045-1AG60","canonicalUrl":"https://aoctrl.com/siemens/3RT1045-1AG60","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1045-1AG60","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1045-1AG60, S3 frame, 45 kW at 500 V AC-3, screw-type terminals, DIN-rail mount.","salesMarkdown":"## SIRIUS S3 Power Contactor — What This Rating Means for Your Panel The Siemens 3RT1045-1AG60 is a SIRIUS S3-frame power contactor rated for 45 kW at 500 V AC-3 and 21.1 kW at 690 V AC-3 — those are the motor-switching numbers that govern real-world conveyor, pump, and fan loads. The AC-3 duty class means it's designed for starting and stopping squirrel-cage induction motors under full load, not just resistive heating banks. At 500 V it handles 45 kW; at 690 V the same contactor derates to 21.1 kW, so match your line voltage to the kW column, not the other way around. Mounting is screw-and-snap-on onto 35 mm or 75 mm standard DIN rail, which is the typical panel integration for this class. The front carries IP20 protection with the cover or box terminal installed; the terminal body itself is IP00, meaning the wiring compartment expects enclosure protection from the panel. Main circuit connections are screw-type terminals, sized for stranded cable up to 2x 50 mm² — that's a heavy power lug, appropriate for the S3 frame's current draw. Solid wire accepts 2x (0.5 to 1.5 mm²) for control wiring, with a separate 2x (2.5 to 16 mm²) range for the main power path. ## What the IP and Terminal Ratings Mean for Fit The IP20 rating on the front with cover installed means the operator-facing side is finger-safe, but the IP00 terminal rating means the wiring compartment must be inside a panel or enclosure that provides the environmental seal. This is standard for panel-mounted contactors — you're not bolting this open-frame into a washdown zone. The degree of pollution rating is 3, which covers conductive pollution in industrial atmospheres; expect this in a typical control panel with no aggressive dust or condensation. ## Mechanical and Electrical Endurance Mechanical life is typical at 10 million operations — that's the wear-out figure for the moving assembly, not the contacts. Electrical life depends on duty cycle: at AC-3 (motor starting) the maximum is 1,000 operations per hour; at AC-4 (plugging/inching) it drops to 300 per hour. The arcing time is 10 to 15 ms, and the dropout time at AC is 10 to 25 ms — fast enough for most safety circuits but verify coordination with your upstream breaker if you need Type 2 coordination.","metaTitle":"Siemens 3RT1045-1AG60 SIRIUS Power Contactor, S3, 45 kW at 5","metaDescription":"Siemens 3RT1045-1AG60 SIRIUS power contactor, S3 frame, 45 kW at 500 V AC-3, 21.1 kW at 690 V. Screw terminals, DIN-rail mount. Current lifecycle stage. Sourced to order.","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":"100 V","at 500 V rated value":"45 kW","at 60 Hz rated value":"100 ... 110 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","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":"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":"21 VA","apparent pick-up power of magnet coil at AC":"300 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":"0.52","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=335624&mlfb=3RT1045-1AG60","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1045-1AG60/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor ratings for this contactor?","answer":"The 3RT1045-1AG60 is rated for 45 kW at 500 V AC-3 and 21.1 kW at 690 V AC-3. These are the motor-switching ratings that determine fit for induction motor loads."},{"question":"What wire sizes does the 3RT1045-1AG60 accept?","answer":"Main circuit screw terminals accept stranded wire up to 2x 50 mm². Control wiring accepts solid 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²). A separate terminal range handles 2x (2.5 to 16 mm²) for the main power path."},{"question":"What is the depth of the 3RT1045-1AG60?","answer":"The depth is 139 mm, with a width of 70 mm and height of 146 mm. This fits the standard S3 frame footprint."},{"question":"Does the 3RT1045-1AG60 mount on standard DIN rail?","answer":"Yes. It uses screw-and-snap-on mounting onto 35 mm or 75 mm standard mounting rail, and side-by-side mounting is supported."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1045-1AG60","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/3RT1045-1AG60 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}}