{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1045-1AK60-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1045-1AK60-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RT1045-1AK60-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1045-1AK60-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1045-1AK60-ZX95, S3 frame size, 45 kW at 500 V AC-3, screw-type terminals, IP20 front with cover, snap-on 35/75 mm DIN rail.","salesMarkdown":"The Siemens SIRIUS 3RT1045-1AK60-ZX95 is a power contactor in the S3 frame size, rated for switching motor loads up to 45 kW at 500 V in AC-3 duty — that's the standard squirrel-cage motor starting category per IEC 60947-4-1, so it handles the inrush and break current a conveyor or pump motor pulls. It mounts on 35 mm or 75 mm standard DIN rail via the screw-and-snap-on fastening, and side-by-side mounting is allowed — no derating gaps required between units for the rated current. The main current circuit uses screw-type terminals, accepting solid conductors from 2x (0.5 to 1.5 mm²) up to max. 2x (0.75 to 4 mm²), and stranded conductors from 2x (10 to 50 mm²) — covers the range from control-wire pigtails to the fat motor feeders. At 690 V the contactor is rated for 21.1 kW in AC-3 — that's the same motor-starting duty at a higher line voltage, useful where the distribution runs 690 V for longer cable runs or larger motor groups. The mechanical service life is rated at 10,000,000 operations typical, and the maximum switching frequency reaches 1,000 1/h in AC-3 duty. Pollution degree 3 means the contactor is designed for an industrial environment where conductive pollution (dust, oil mist, condensation) can occur — the creepage distances and clearances are sized accordingly, so it's not a panel you need to seal up tight. ## Integration details for the wireman Dimensions are 146 mm high, 70 mm wide, and 139 mm deep. The front of the contactor carries an IP20 rating when the cover or box terminal is installed, which is typical for finger-safe touch protection inside an enclosed panel; the terminal area itself is IP00 — no protection against tool contact, so the panel door needs to be interlocked or the bus bars guarded. The coil operates at 50/60 Hz with a voltage range of 0.8 to 1.1 times the rated value — so a 110 V rated coil (at 50 Hz) or 120 V coil (at 60 Hz) holds in across a 20% dip, which helps ride through brownouts without dropping out the motor.","metaTitle":"Siemens 3RT1045-1AK60-ZX95 SIRIUS Power Contactor, S3 Frame,","metaDescription":"Siemens SIRIUS 3RT1045-1AK60-ZX95 power contactor, S3 size, 45 kW at 500 V AC-3, screw terminals, snap-on 35/75 mm DIN rail, IP20 front. Current production. 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":"0.8 ... 1.1","Arcing Time":"10 ... 15 ms","On The Front":"IP20; IP20 on the front with cover / box terminal","1 Rated Value":"50 Hz","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":"110 V","at 500 V rated value":"45 kW","at 60 Hz rated value":"120 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=361662&mlfb=3RT1045-1AK60-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1045-1AK60-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What wire sizes does the screw terminal accept?","answer":"Solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max. 2x (0.75 to 4 mm²). Stranded conductors: 2x (10 to 50 mm²). Also accepts 2x (2.5 to 16 mm²) solid or stranded."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1045-1AK60-ZX95","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/3RT1045-1AK60-ZX95 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}}