{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2545-1AF00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2545-1AF00","canonicalUrl":"https://aoctrl.com/siemens/3RT2545-1AF00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2545-1AF00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S3 contactor, order code 3RT2545-1AF00, 70 mm width, 152 mm depth, screw-type coil terminals, with auxiliary switch, screw and snap-on 35 mm DIN rail mounting.","salesMarkdown":"## SIRIUS S3 contactor, 70 mm wide, 152 mm deep The Siemens 3RT2545-1AF00 is a SIRIUS S3 contactor with screw-type coil terminals and an integrated auxiliary switch. It measures 70 mm wide by 140 mm high by 152 mm deep — the 152 mm depth is the dimension to check against gland-plate clearance or enclosure back-wall obstructions before you cut the backplate. ## Terminal capacity and auxiliary contact ratings Power terminals accept stranded wire: 2x (6 to 16 mm²), 2x (10 to 50 mm²), or 1x (10 to 70 mm²). Solid/stranded auxiliary terminal range is 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²). The auxiliary switch is present on this variant, so the control wiring lands on screw terminals with a 0.5 mm² minimum — fine for PLC digital outputs or relay contacts. Auxiliary contact ratings span the common control voltages: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 1 A at 690 V. The 24 V 10 A rating handles a modest pilot-duty load; the 690 V 1 A rating is the limit for switching a contactor coil in a 690 V line. ## Clearance and side-by-side mounting Side-by-side mounting is permitted, saving DIN-rail space in multi-contactor groups. Required clearances: 10 mm upwards, 10 mm downwards, 10 mm at the side, 0 mm forwards, 0 mm backwards. The zero forward/backward clearance means the contactor can be stacked against a panel wall or adjacent device without an air gap — useful in dense cabinets.","metaTitle":"Siemens 3RT2545-1AF00 SIRIUS Contactor, S3, 70 mm, 152 mm De","metaDescription":"Siemens SIRIUS 3RT2545-1AF00 S3 contactor, 70 mm wide, 152 mm depth, screw terminals, auxiliary switch. Active production. Sourced to order. RFQ for pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"152 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"70 mm","at AC":"11 ... 21 ms","Height":"140 mm","Upwards":"10 mm","Forwards":"0 mm","Stranded":"2x (6 ... 16 mm²), 2x (10 ... 50 mm²), 1x (10 ... 70 mm²)","at 50 Hz":"0.38","Backwards":"0 mm","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","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","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":"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":"6 A","at 400 V rated value":"3 A","at 440 V rated value":"1.8 A","at 50 Hz rated value":"110 V","at 500 V rated value":"2 A","at 600 V rated value":"0.1 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","Relative Humidity Minimum":"10 %","per NC contact rated value":"80 A","per NO contact rated value":"80 A","Of Main Circuit Rated Value":"8 kV","Substance Prohibitance (Date)":"09/01/2017","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gR: 250 A (690 V, 100 kA)","at 24 V per NC contact rated value":"100 A","at 24 V per NO contact rated value":"100 A","At Contactor For Auxiliary Contacts":"Screw-type terminals","at 110 V per NC contact rated value":"100 A","at 110 V per NO contact rated value":"100 A","at 220 V per NC contact rated value":"7 A","at 220 V per NO contact rated value":"7 A","at 230 V per NC contact rated value":"22 kW","at 230 V per NO contact rated value":"22 kW","at 400 V per NC contact rated value":"37 kW","at 400 V per NO contact rated value":"37 kW","at 440 V per NC contact rated value":"0.42 A","at 440 V per NO contact rated value":"0.42 A","With Type Of Coordination 1 Required":"gG: 250 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","number of NC contacts for main contacts":"2","number of NO contacts for main contacts":"2","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":"4","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","at ambient temperature 40 °C rated value":"125 A","at ambient temperature 60 °C rated value":"105 A","mirror contact according to IEC 60947-4-1":"Yes","apparent holding power of magnet coil at AC":"19 VA","apparent pick-up power of magnet coil at AC":"296 VA","Type Of Voltage Of The Control Supply Voltage":"AC","for 3-phase AC motor at 460/480 V rated value":"30 hp","Limited To 1 S Switching At Zero Current Maximum":"1 080 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"1 080 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","Inductive Power Factor With Closing Power Of The Coil":"0.61","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":"fuse gG: 10 A","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","AWG number as coded connectable conductor cross section for main contacts":"10 ... 2","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","power loss [W] at AC-3 at 400 V for rated value of the operational current per conductor":"5.3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fb918960dd2a48789b6a44ffa1363bda.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=630092&mlfb=3RT2545-1AF00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2545-1AF00/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT2545-1AF00 drop into a panel specified around 3RT2536-1AF00?","answer":"Both are SIRIUS S3 contactors with the same 70 mm width and DIN-rail mounting, so the footprint and terminal layout are identical. The 3RT2545-1AF00 carries an auxiliary switch as standard; the 3RT2536-1AF00 may not. Check your BOM for auxiliary contact count before swapping."},{"question":"What is the depth of 3RT2545-1AF00?","answer":"152 mm depth, 70 mm width, 140 mm height. The 152 mm depth is the critical dimension for enclosure depth clearance."},{"question":"What wire sizes does the 3RT2545-1AF00 accept?","answer":"Power terminals: stranded 2x (6 to 16 mm²), 2x (10 to 50 mm²), or 1x (10 to 70 mm²). Auxiliary terminals: solid/stranded 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2545-1AF00","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/3RT2545-1AF00 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}}