{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1016-1AN21","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1016-1AN21","canonicalUrl":"https://aoctrl.com/siemens/3RT1016-1AN21","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1016-1AN21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S00, 3RT1016-1AN21, 24 VDC coil, 10 A at 24 V, screw terminals, 45 mm width, DIN-rail mount.","salesMarkdown":"The 3RT1016-1AN21: The AC-2 rating (4 kW at 400 V) covers wound-rotor motor starting and braking — a duty that demands higher contact endurance than standard AC-3. The AC-4 rating (8.5 A at 400 V) handles reversing and inching, where contacts must interrupt full load current frequently. For resistive or lightly inductive loads, the AC-1 rating at 24 V is 10 A, but at 230 V it drops to 6 A and at 400 V to 3 A — so the same contactor carries less current as voltage rises, which is typical for this class. The coil holds at 24 VDC nominal; the operating range is 0.8–1.1 × rated voltage at 50 Hz (0.85–1.1 at 60 Hz), so the coil stays pulled in down to about 19.2 VDC. The 45 mm wide, 57.5 mm tall, 72 mm deep footprint fits standard 35 mm DIN rail (EN 50022) with screw or snap-on fastening. Side-by-side mounting is allowed, so multiple contactors pack tightly on the rail without required spacing — useful for dense motor starter assemblies. Type 2 coordination (which limits damage to the contactor after a fault) requires a 20 A gL/gG fuse. This means the upstream fuse must be sized to the coordination type the designer specifies — Type 2 is more restrictive but keeps the contactor reusable after a fault. The contactor carries IP20 protection on the front and terminals, so it is finger-safe inside an enclosure but not washdown-rated.","metaTitle":"Siemens 3RT1016-1AN21 SIRIUS Power Contactor, S00, 24 VDC Co","metaDescription":"Siemens SIRIUS 3RT1016-1AN21 power contactor, size S00, 24 VDC coil, 10 A rated at 24 V. Active production. DIN-rail mount. Available to order. Request RFQ.","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","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","Of The Terminal":"IP20","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Size Of Contactor":"S00","Solid Or Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","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":"4.5 kW","at 60 Hz rated value":"220 V","at 690 V rated value":"5.5 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"4 kW","at AC-4 at 400 V rated value":"8.5 A","Substance Prohibitance (Date)":"01.07.2006 00:00:00","at AWG cables for main contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 20 A","reference code acc. to IEC 81346-2":"Q","With Type Of Coordination 1 Required":"fuse gL/gG: 35 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","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","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","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","Required Spacing For Grounded Parts At The Side":"6 mm","Inductive Power Factor With Closing Power Of The Coil":"0.8","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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","number of NC contacts for auxiliary contacts instantaneous contact":"0","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=109214&mlfb=3RT1016-1AN21","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1016-1AN21/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT1016-1AN21?","answer":"The 3RT1016-1AN22 is a direct sibling with the same S00 frame, coil voltage, and terminal type; the main difference is typically auxiliary contact configuration. The 3RT1016-1AN21 drops into the same DIN-rail footprint and wiring pattern as the 1AN22 without rewiring."},{"question":"What conductor sizes does the 3RT1016-1AN21 accept?","answer":"Solid or stranded conductors: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), max 2x (0.75–4 mm²). AWG equivalents: 2x (20–16), 2x (18–14), 1x 12."},{"question":"What compliance documentation does Siemens provide for 3RT1016-1AN21?","answer":"The part carries RoHS compliance (substance prohibition date 01.07.2006) and is designed to IEC standards (reference code IEC 81346-2). Standard Siemens declarations of conformity cover CE, UKCA, and EAC as applicable to the SIRIUS series."},{"question":"Where can I buy 3RT1016-1AN21?","answer":"This part is sourced and quoted to order against an RFQ through independent 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/3RT1016-1AN21","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/3RT1016-1AN21 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}}