{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2015-1AN21","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2015-1AN21","canonicalUrl":"https://aoctrl.com/siemens/3RT2015-1AN21","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2015-1AN21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S00, 3RT2015-1AN21, 24 VDC screw-type coil, main contacts rated 20–12 A, screw and snap-on mounting on 35 mm DIN rail.","salesMarkdown":"It carries a 24 VDC screw-type coil and main contacts rated for 20–12 A, with an auxiliary switch built in. ## Switching duty and frequency The 3RT2015-1AN21 is rated for different switching frequencies depending on the duty class: up to 1,000 operations per hour in AC-1 (resistive loads), 750 per hour in AC-2 and AC-3 (slip-ring and squirrel-cage motors), and 250 per hour in AC-4 (plugging/inching). The AC-3e rating also sits at 750 ops/h. For a packaging line running frequent start/stop cycles on a conveyor motor, the AC-3 ceiling of 750 ops/h gives you headroom — you won't hit that limit on a normal flow-wrapper, but it's worth checking if you're doing rapid indexing. ## Auxiliary contact ratings and wiring The built-in auxiliary switch is rated across a range of voltages: 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 3 A at 400 V, and 0.14 A at 440 V. The contactor measures 45 mm wide, 58 mm high, and 73 mm deep — size S00 footprint. Clearance requirements: 10 mm upward and downward, 6 mm at the sides, 10 mm forward. The coil uses screw-type terminals, so you'll need a screwdriver for termination — no push-in spring cages here.","metaTitle":"Siemens 3RT2015-1AN21 SIRIUS Power Contactor, Size S00, 24 V","metaDescription":"Siemens 3RT2015-1AN21 SIRIUS power contactor, size S00, 24 VDC screw-type coil, rated 20-12 A main contacts. Current production lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"0.5 ... 4 mm²","Width":"45 mm","at AC":"4 ... 15 ms","Height":"58 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"0.5 ... 4 mm²","at 50 Hz":"0.25","at 60 Hz":"0.25","Downwards":"10 mm","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","at AC-2 maximum":"750 1/h","at AC-3 maximum":"750 1/h","at AC-4 maximum":"250 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","at AC-3e maximum":"750 1/h","For Main Contacts":"20 ... 12","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":"S00","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Product Brand Name":"SIRIUS","Product Designation":"Power 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":"30 000 000","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":"0.75 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.14 A","at 480 V rated value":"4.8 A","at 50 Hz rated value":"220 V","at 500 V rated value":"2 A","at 60 Hz rated value":"220 V","at 600 V rated value":"6.1 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 12","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"0.25 hp","at 200/208 V rated value":"1.5 hp","at 220/230 V rated value":"2 hp","at 460/480 V rated value":"3 hp","at 575/600 V rated value":"5 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"0.6 W","at AC-2 at 400 V rated value":"3 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"6.5 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2009","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"15.8 A","at AC-5b up to 400 V rated value":"5.8 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 20A (690V,100kA), aM: 16A (690V, 100kA), BS88: 20A (415V, 80kA)","Without Load Current Share Typical":"4.2 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 35A (690V,100kA), aM: 20A (690V,100kA), BS88: 35A (415V,80kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"0.2 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","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)","mirror contact according to IEC 60947-4-1":"Yes; with 3RH29","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC","Limited To 1 S Switching At Zero Current Maximum":"120 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"86 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"67 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"52 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"43 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / Q600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 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":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"2.5 mm²","number of NO contacts for auxiliary contacts instantaneous contact":"1","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$16.51","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a015b469d3dc65e55333791c1ea296af.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=325811&mlfb=3RT2015-1AN21","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2015-1AN21/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RT2015-1AN21?","answer":"The 3RT2015-1AN21 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will the 3RT2015-1AN21 drop into a panel wired for the 3RT2015-1AK61?","answer":"Both are size S00 contactors with the same 45 mm width, 58 mm height, and 73 mm depth, and both mount on 35 mm DIN rail. The main difference is the coil voltage — the 1AN21 runs on 24 VDC, while the 1AK61 uses a different coil. If your panel is wired for 24 VDC control, the 1AN21 is a direct mechanical swap; verify the coil circuit before pulling the old one."},{"question":"What is the depth of the 3RT2015-1AN21?","answer":"The 3RT2015-1AN21 has a depth of 73 mm, part of the size S00 footprint."},{"question":"What wire sizes does the 3RT2015-1AN21 accept?","answer":"The main contact terminals accept solid or stranded wire from 0.5 to 4 mm², including combinations like 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or 2x 4 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2015-1AN21","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/3RT2015-1AN21 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}}