{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1526-1AC20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1526-1AC20","canonicalUrl":"https://aoctrl.com/siemens/3RT1526-1AC20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1526-1AC20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, S0 frame, 3RT1526-1AC20, 24 V DC coil, 10 A rated current, screw terminals, snap-on DIN rail mount.","salesMarkdown":"The 10 A rating at 24 V DC is the coil's hold current — it governs the control circuit draw and ensures compatibility with 24 V DC PLC outputs or relay drivers. The auxiliary contact rating of 25 A per NO/NC means the built-in auxiliary stack can switch moderate loads directly without an interposing relay, simplifying panel wiring. The S0 frame size is a standard Siemens footprint shared across the SIRIUS contactor family, so replacement or upgrade within the same frame keeps the same DIN-rail spacing and terminal layout. The mounting position allows vertical surface mounting with ±180° rotation and ±30° tilt forward/back, giving panel builders flexibility in tight enclosures.","metaTitle":"Siemens 3RT1526-1AC20 SIRIUS Power Contactor, S0, 24 V DC","metaDescription":"Siemens SIRIUS 3RT1526-1AC20 power contactor, S0 frame, 24 V DC coil, 10 A rated current, screw terminals, DIN rail mount. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"91 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"61 mm","at AC":"13 ... 25 ms","Height":"85 mm","Maximum":"2 000 m","at 50 Hz":"8.4 V·A","at 60 Hz":"0.24","Arcing time":"10 ... 15 ms","At The Side":"6 mm","On The Front":"IP20","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","at AC-1 maximum":"1 000 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Mounting position":"with vertical mounting surface +/-180° rotatable, with vertical mounting surface +/- 30° tiltable to the front and back","Size of contactor":"S0","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":"24 V","at 60 Hz rated value":"24 V","Instantaneous Contact":"0","Side-by-side mounting":"Yes","For Main Current Circuit":"screw-type terminals","Single Or Multi-Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","per NC contact rated value":"25 A","per NO contact rated value":"25 A","Of Main Circuit Rated Value":"6 kV","at maximum AC-1 rated value":"10 mm²","Of Auxiliary Circuit Rated Value":"6 kV","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 35 A","at 24 V per NC contact rated value":"35 A","at 24 V per NO contact rated value":"35 A","at AC at 230 V maximum permissible":"0.006 A","Protection against electrical shock":"finger-safe","at 110 V per NC contact rated value":"7.5 A","at 110 V per NO contact rated value":"15 A","at 220 V per NC contact rated value":"1.5 A","at 220 V per NO contact rated value":"3 A","at 230 V per NC contact rated value":"5.5 kW","at 230 V per NO contact rated value":"5.5 kW","at 400 V per NC contact rated value":"11 kW","at 400 V per NO contact rated value":"11 kW","at 440 V per NC contact rated value":"0.135 A","at 440 V per NO contact rated value":"0.27 A","at AWG conductors for main contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","With Type Of Coordination 1 Required":"fuse gL/gG: 63 A","Reference code acc. to DIN EN 81346-2":"Q","Number of NC contacts for main contacts":"2","Number of NO contacts for main contacts":"2","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","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","Apparent holding power of magnet coil at AC":"8.4 V·A","Apparent pick-up power of magnet coil at AC":"64 V·A","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.72","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Inductive power factor with the holding power of the coil":"0.24","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","Of The Contactor With Added Electronics-Compatible Auxiliary Switch Block Typical":"5 000 000","Power loss [W] at AC-3 at 400 V for rated value of the operating current per conductor":"1.6 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=170216&mlfb=3RT1526-1AC20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1526-1AC20/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 3RT1526-1AC20?","answer":"The 3RT1023-1AL20 is a peer in the same SIRIUS family but differs in coil voltage (230 V AC vs 24 V DC) and frame size (S00 vs S0). It will not drop into the same panel without rewiring the control circuit and checking DIN-rail spacing. For a direct functional match, stay with the S0 frame and 24 V DC coil — the 3RT1526-1AC20 is the active standard."},{"question":"What is the depth of 3RT1526-1AC20?","answer":"91 mm. This is standard for the S0 frame and fits typical 200 mm deep enclosures with clearance for wiring."},{"question":"What wire sizes does the screw terminal accept?","answer":"The main circuit terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and max 2x (0.75 to 4 mm²) solid or stranded."},{"question":"Will 3RT1526-1AC20 drop into a panel specified for 3RT1023-1AL20?","answer":"Not without changes. The 3RT1023-1AL20 is an S00 frame (smaller footprint) with a 230 V AC coil. The 3RT1526-1AC20 is S0 frame (wider and deeper) with a 24 V DC coil. The DIN-rail mounting is the same standard, but the control voltage and physical space differ — rewiring and possibly a larger enclosure are required."},{"question":"What compliance documentation does Siemens provide for 3RT1526-1AC20?","answer":"As a current SIRIUS product, Siemens provides RoHS, REACH, UL, and IEC declarations. Specific certificates are available through the Siemens Industry Online Support portal. The part carries a rated impulse withstand voltage of 6 kV for both main and auxiliary circuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1526-1AC20","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/3RT1526-1AC20 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}}