{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1535-1AN20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1535-1AN20","canonicalUrl":"https://aoctrl.com/siemens/3RT1535-1AN20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1535-1AN20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, S2 size, 3RT1535-1AN20, 40 A rated per contact, screw-type terminals, 73 mm width, 112 mm height, 115 mm depth.","salesMarkdown":"It switches resistive and motor loads in control panels, with a mechanical life of 10 million operations typical. The coil pulls 15 VA at 50 Hz; arcing time runs 10 to 15 ms, so it clears fast enough for most motor-starting duty. The vertical mounting surface allows +/-180° rotation and +/-30° tilt front-to-back, so you can orient it for wire routing without derating. Side-by-side mounting is permitted — no extra gap needed between units. At 73 mm wide, 112 mm tall, and 115 mm deep, it fits a standard S2 footprint. AWG equivalents for the main contacts go from 18 to 2 AWG. The magnet coil also terminates at screw terminals — no push-in or spring-cage here, so keep a screwdriver handy for panel wiring. This is an active SIRIUS catalog line. For volume or blanket orders, submit an RFQ with target quantity and delivery window.","metaTitle":"Siemens 3RT1535-1AN20 SIRIUS Power Contactor, S2 Size, 40 A","metaDescription":"Siemens SIRIUS 3RT1535-1AN20 power contactor, S2 size, 40 A rated per contact, screw terminals, 10M mechanical life. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"115 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"73 mm","at AC":"10 ... 30 ms","Height":"112 mm","Stranded":"2x (0.75 ... 25 mm²)","at 50 Hz":"15 VA","at 60 Hz":"0.35","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"1 000 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Mounting Position":"with vertical mounting surface +/-180° rotatable, with vertical mounting surface +/- 30° tiltable to the front and back","Size Of Contactor":"S2","Solid Or Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","Product Brand Name":"SIRIUS","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 440 V rated value":"1 A","at 50 Hz rated value":"220 V","at 60 Hz rated value":"220 V","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","per NC contact rated value":"40 A","per NO contact rated value":"40 A","Of Main Circuit Rated Value":"6 kV","Substance Prohibitance (Date)":"05/01/2012","at AWG cables for main contacts":"2x (18 ... 2)","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 80 A","at 24 V per NC contact rated value":"50 A","at 24 V per NO contact rated value":"50 A","at AC at 230 V maximum permissible":"0.018 A","At Contactor For Auxiliary Contacts":"Screw-type terminals","at 110 V per NC contact rated value":"12.5 A","at 110 V per NO contact rated value":"25 A","at 220 V per NC contact rated value":"2.5 A","at 220 V per NO contact rated value":"5 A","at 230 V per NC contact rated value":"9.5 kW","at 230 V per NO contact rated value":"9.5 kW","at 400 V per NC contact rated value":"18.5 kW","at 400 V per NO contact rated value":"18.5 kW","at 440 V per NC contact rated value":"0.135 A","at 440 V per NO contact rated value":"0.27 A","With Type Of Coordination 1 Required":"fuse gL/gG: 160 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":"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":"60 A","at ambient temperature 60 °C rated value":"55 A","Finely Stranded Without Core End Processing":"2x (0.75 ... 16 mm²)","apparent holding power of magnet coil at AC":"15 VA","apparent pick-up power of magnet coil at AC":"170 VA","Type Of Voltage Of The Control Supply Voltage":"AC","for 3-phase AC motor at 460/480 V rated value":"25 hp","Inductive Power Factor With Closing Power Of The Coil":"0.76","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.35","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 gL/gG: 10 A","minimum cross-section in main circuit at maximum AC-1 rated value":"16 mm²","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","power loss [W] at AC-3 at 400 V for rated value of the operational current per conductor":"2.6 W"}},"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=223286&mlfb=3RT1535-1AN20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1535-1AN20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1535-1AN20?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Submit an RFQ for current pricing and availability."},{"question":"What is the mechanical life of 3RT1535-1AN20?","answer":"Typical mechanical life is 10 million operations. That covers the contactor mechanism itself, not the electrical endurance under load — derate for switching current."},{"question":"What wire sizes does 3RT1535-1AN20 accept?","answer":"Solid conductors: two per clamp from 0.5 to 1.5 mm², or 0.75 to 2.5 mm², max 4 mm². Stranded: two per clamp from 0.75 to 25 mm². Main contacts accept 18 to 2 AWG."},{"question":"Will 3RT1535-1AN20 drop into a panel specified for 3RT2535-1AD00?","answer":"Both are S2-size Siemens SIRIUS contactors with the same mounting footprint on 35 mm DIN rail. The 3RT1535-1AN20 uses screw-type terminals; the 3RT2535-1AD00 may use a different coil voltage or auxiliary configuration — verify the coil rating and auxiliary contact count before swapping."},{"question":"What compliance documentation does Siemens provide for 3RT1535-1AN20?","answer":"RoHS compliance is indicated by the substance prohibition date of 05/01/2012. The part carries 6 kV rated impulse withstand voltage for main and auxiliary circuits. Standard Siemens declarations of conformity and material declarations are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1535-1AN20","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/3RT1535-1AN20 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}}