{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1016-1AR21","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1016-1AR21","canonicalUrl":"https://aoctrl.com/siemens/3RT1016-1AR21","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1016-1AR21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, size S00, 3RT1016-1AR21, 24 V DC coil, 10 A AC-12, screw terminals, snap-on 35 mm DIN rail.","salesMarkdown":"The Siemens 3RT1016-1AR21 is a SIRIUS S00 power contactor with a 24 VDC coil, rated for 10 A in AC-12 duty (resistive loads at 50/60 Hz). For motor duty, check the AC-2 and AC-4 ratings: 4 kW at 400 V in AC-2 (slip-ring motors) and 8.5 A at 400 V in AC-4 (plugging/inching). Coil draws from a 24 VDC supply; the contactor holds in down to roughly 18 V before dropout. The S00 frame keeps the footprint compact at 45 mm wide, 57.5 mm tall, and 72 mm deep — fits tight DIN-rail rows. Terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) solid/stranded. AWG equivalents: 2x (20 to 16), 2x (18 to 14), 1x 12. Front and terminal protection is IP20 — finger-safe for panel installation, not for washdown. ## Short-circuit coordination and protection This matters when specifying upstream protection for the panel.","metaTitle":"Siemens 3RT1016-1AR21 SIRIUS Power Contactor, S00, 24 VDC Co","metaDescription":"Siemens 3RT1016-1AR21 SIRIUS S00 power contactor. 24 VDC coil, 10 A AC-12 rated current. Screw terminals, snap-on DIN rail. Current lifecycle stage. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"45 mm","Height":"57.5 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":"440 V","at 500 V rated value":"4.5 kW","at 60 Hz rated value":"440 V","at 690 V rated value":"5.5 kW","Instantaneous Contact":"1","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)","at AC-2 at 400 V rated value":"4 kW","at AC-4 at 400 V rated value":"8.5 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 (20 ... 16), 2x (18 ... 14), 1x 12","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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number of poles for main current circuit":"3","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","at ambient temperature 40 °C rated value":"22 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","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=235980&mlfb=3RT1016-1AR21","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1016-1AR21/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT1016-1AR21?","answer":"The 3RT1016-1AR11 shares the same S00 frame and screw-terminal format but uses a different coil voltage (110 VAC 50/60 Hz). If your control voltage is 24 VDC, the 3RT1016-1AR21 is the correct choice; the 1AR11 will not pull in on 24 VDC. The 3RT1016-2AP02 adds a second auxiliary contact block but also uses a different coil. No direct drop-in substitute exists without verifying coil voltage."},{"question":"Will 3RT1016-1AR21 drop into a panel specified for 3RT1016-1AR11?","answer":"Mechanically yes — same S00 frame, same 45 mm width, same DIN-rail mounting. Electrically no, unless the control circuit is rewired: the 1AR21 uses a 24 VDC coil, while the 1AR11 uses 110 VAC. Swapping them without changing the coil supply will not work."},{"question":"Where can I buy 3RT1016-1AR21?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1016-1AR21","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/3RT1016-1AR21 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}}