{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2016-2AN21","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2016-2AN21","canonicalUrl":"https://aoctrl.com/siemens/3RT2016-2AN21","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2016-2AN21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2016-2AN21 power contactor, Size S00, 20-12 A main contacts, 230 V 1 hp motor rating, spring-type coil terminals, screw and snap-on 35 mm DIN rail mounting.","salesMarkdown":"The coil terminals use spring-type connections, so you land the control wiring without a screwdriver — speeds up panel build and avoids loose terminations on a vibrating line. The 20-12 A main contact range covers the AC-3 motor switching duty for fractional-horsepower loads. The 1 hp rating at 230 V tells you it handles a typical small motor on a 230 V single-phase supply — common on packaging lines for infeed belts or label applicators. Switching frequency limits are per duty class: up to 1000 cycles/hour in AC-1 (resistive), 750 in AC-3 (motor start/run), and 250 in AC-4 (plugging/inching). If your application does frequent reversing or jogging, the AC-4 limit governs — don't exceed 250 operations per hour. The Size S00 footprint — 45 mm wide, 70 mm tall, 73 mm deep — fits standard panel layout grids. Wire range accepts 0.5 to 4 mm² solid or stranded, or 2x (0.5 to 4 mm²) for looping through. ## Auxiliary contacts and coil data An integrated auxiliary switch is standard — no add-on block needed for basic status feedback. Auxiliary contact ratings vary by voltage: 10 A at 24 V, 2 A at 48/60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 3 A at 400 V, 0.2 A at 440 V. Operating time is 4-15 ms AC; arcing time is 10-15 ms. Mechanical service life is typically 30 million operations.","metaTitle":"Siemens 3RT2016-2AN21 SIRIUS Contactor, Size S00, 20-12 A","metaDescription":"Siemens 3RT2016-2AN21 SIRIUS power contactor, Size S00, 20-12 A main contacts, 230 V 1 hp motor rating, spring-type coil terminals, current lifecycle stage. Sourced to order.","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":"70 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":"Spring-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 ... 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":"1 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.2 A","at 480 V rated value":"7.6 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":"9 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 12","For Main Current Circuit":"spring-loaded terminals","at 110/120 V rated value":"0.33 hp","at 200/208 V rated value":"2 hp","at 220/230 V rated value":"3 hp","at 460/480 V rated value":"5 hp","at 575/600 V rated value":"7.5 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":"0.9 W","at AC-2 at 400 V rated value":"4 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"8.5 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":"19.4 A","at AC-5b up to 400 V rated value":"7.4 A","For Auxiliary And Control Circuit":"spring-loaded 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":"Spring-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":"0.3 W","for AWG cables for auxiliary contacts":"2x (20 ... 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 ... 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 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","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":"155 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"111 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"86 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"66 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"55 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":"4 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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/854a8ffa1ff7ea187391e08044d35d3a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=422762&mlfb=3RT2016-2AN21","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2016-2AN21/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for the 3RT2016-2AN21?","answer":"Main contacts rated 20-12 A, motor rating 1 hp at 230 V. Coil holding power 0.25 VA at 50/60 Hz. Integrated auxiliary switch with ratings from 10 A at 24 V down to 0.2 A at 440 V. Mechanical life typically 30 million operations."},{"question":"What wire sizes does the 3RT2016-2AN21 accept?","answer":"Solid or stranded wire from 0.5 to 4 mm², or 2x (0.5 to 4 mm²) for looping. Coil terminals are spring-type — no screwdriver needed for control wiring."},{"question":"What is the mounting footprint and clearance for the 3RT2016-2AN21?","answer":"Size S00: 45 mm wide, 70 mm tall, 73 mm deep. Mounts on 35 mm DIN rail per DIN EN 60715. Clearances: 10 mm up/down/forward, 6 mm sides. Mounting position flexible with +/-180° rotation and +/-22.5° tilt."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2016-2AN21","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/3RT2016-2AN21 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}}