{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1015-2AN21","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1015-2AN21","canonicalUrl":"https://aoctrl.com/siemens/3RT1015-2AN21","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1015-2AN21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S00, 3RT1015-2AN21, 24 VDC coil, spring-loaded terminals, screw and snap-on mounting on 35 mm DIN rail, IP20.","salesMarkdown":"The Siemens 3RT1015-2AN21 is a SIRIUS power contactor in the compact S00 frame size — 45 mm wide, 60 mm tall, 73 mm deep — designed for switching motor loads and resistive circuits in control panels. The 24 VDC coil is the key selection anchor here. Auxiliary contact ratings are 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V — these are the limits for signal-level switching, not the main poles. For motor duty, the AC-2 rating at 400 V is 3 kW, and the AC-4 rating at 400 V is 6.5 A; that tells you this contactor handles reversing or inching duty cycles, not just across-the-line starts. Spring-loaded terminals on the main circuit accept 2x (0.25 to 2.5 mm²) solid or stranded, or 2x (24 to 14 AWG). That means no screwdriver torque check on the power connections — strip, insert, done. The front and terminal areas carry IP20 finger protection, standard for enclosed panel use. ## Coordination and environment This is the number your panel designer needs for the short-circuit protection scheme — don't guess it from the motor FLA. That covers most industrial environments but not clean-room or medical front-end applications without additional enclosure derating. Side-by-side mounting is permitted, which is expected for the S00 frame — you can pack these at 45 mm pitch without derating, as long as ambient stays within the -25 to +60 °C window.","metaTitle":"Siemens 3RT1015-2AN21 SIRIUS Power Contactor, S00 Frame, 24","metaDescription":"Siemens 3RT1015-2AN21 SIRIUS power contactor, size S00, 24 VDC coil, spring-loaded terminals, screw and snap-on DIN rail mount, IP20. Active production. Rated for AC-2/AC-4 motor s","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"60 mm","Maximum":"2 000 m","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","At The Side":"6 mm","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Of The Terminal":"IP20","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Size of contactor":"S00","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":"30 000 000","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":"220 V","at 500 V rated value":"3.5 kW","at 60 Hz rated value":"220 V","at 690 V rated value":"4 kW","Instantaneous Contact":"1","Side-by-side mounting":"Yes","For Main Current Circuit":"spring-loaded terminals","Single Or Multi-Stranded":"2x (0,25 ... 2,5 mm²)","at AC-2 at 400 V rated value":"3 kW","at AC-4 at 400 V rated value":"6.5 A","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 20 A","at AWG conductors for main contacts":"2x (24 ... 14)","With Type Of Coordination 1 Required":"fuse gL/gG: 35 A","Reference code acc. to DIN EN 81346-2":"Q","Number of NC contacts for main contacts":"0","Number of NO contacts for main contacts":"3","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Number of poles for main current circuit":"3","at AWG conductors for auxiliary contacts":"2x (24 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"spring-loaded terminals","at ambient temperature 40 °C rated value":"18 A","Apparent holding power of magnet coil at AC":"4.4 V·A","Apparent pick-up power of magnet coil at AC":"27 V·A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.8","Inductive power factor with the holding power of the coil":"0.27","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","Of The Contactor With Added Electronics-Compatible 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=274167&mlfb=3RT1015-2AN21","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1015-2AN21/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor switching ratings for this contactor?","answer":"At 400 V, the AC-2 rating is 3 kW and the AC-4 rating is 6.5 A. The AC-2 figure covers normal starting/running, while the AC-4 figure matters for reversing or inching duty where the contactor makes and breaks the load current."},{"question":"What fuse coordination is required for the 3RT1015-2AN21?","answer":"For type 2 coordination (contactor undamaged after a fault), use a gL/gG fuse rated 20 A. For type 1 coordination (contactor may need replacement), the fuse can be up to 35 A."},{"question":"What wire sizes do the spring-loaded terminals accept?","answer":"The main circuit terminals accept 2x (0.25 to 2.5 mm²) solid or stranded conductors, or 2x (24 to 14 AWG). No screwdriver needed — strip, insert, and the spring holds."},{"question":"Does the 3RT1015-2AN21 mount on standard DIN rail?","answer":"Yes, it mounts via screw or snap-on onto 35 mm standard mounting rail per DIN EN 50022. The S00 frame is 45 mm wide, so side-by-side mounting is permitted without additional spacing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1015-2AN21","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/3RT1015-2AN21 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}}