{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1016-1GX21-0AA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1016-1GX21-0AA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1016-1GX21-0AA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1016-1GX21-0AA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, Size S00 power contactor, 3RT1016-1GX21-0AA2, 45 mm width, screw-type terminals, AC-2 4 kW / AC-4 8.5 A at 400 V, 1 NO auxiliary contact, IP20 finger-safe.","salesMarkdown":"## SIRIUS S00 power contactor — 3RT1016-1GX21-0AA2 The Siemens 3RT1016-1GX21-0AA2 is a SIRIUS Size S00 power contactor with screw-type terminals, designed for switching motor loads in control panels up to 4 kW at 400 V in AC-2 duty or 8.5 A in AC-4 duty. It carries a single normally-open instantaneous auxiliary contact rated at 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V, covering typical PLC and relay interface levels. ## Mounting and integration — 45 mm DIN-rail footprint The 45 mm wide, 115 mm tall, 72 mm deep housing mounts via screw or snap-on onto 35 mm DIN rail per EN 50022, fitting standard panel layouts without special adapters. Screw 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 or stranded conductors, with AWG equivalents 2x (20 to 16), 2x (18 to 14), or 1x 12. ## Motor switching ratings and coordination Rated for 4 kW at 400 V in AC-2 duty (slip-ring motors, moderate overloads) and 8.5 A at 400 V in AC-4 duty (plugging, inching, reversing). Motor output at 500 V is 4.5 kW and at 690 V is 5.5 kW, both at 50/60 Hz, covering common European and North American line voltages. Type 1 coordination requires a 35 A gL/gG fuse; Type 2 coordination requires a 20 A gL/gG fuse, allowing the designer to balance short-circuit withstand against component protection. Operating temperature range is -25 to +60 °C, with pollution degree 3 (conductive pollution typical in industrial enclosures) and maximum operating altitude 2,000 m. The built-in surge suppressor uses full-wave rectification, reducing coil-emission noise and extending contact life on inductive loads.","metaTitle":"Siemens 3RT1016-1GX21-0AA2 SIRIUS S00 Power Contactor, 45mm","metaDescription":"Siemens SIRIUS 3RT1016-1GX21-0AA2 power contactor, Size S00, 45mm wide, screw terminals, IP20, AC-2 4kW / AC-4 8.5A at 400V. Current lifecycle. Sourced 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":"115 mm","Maximum":"2 000 m","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":"21.6 ... 31.9 V","at 500 V rated value":"4.5 kW","at 60 Hz rated value":"21.6 ... 31.9 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","Design of the surge suppressor":"with full-wave rectification","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":"3.8 V·A","Apparent pick-up power of magnet coil at AC":"3.8 V·A","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.9","Inductive power factor with the holding power of the coil":"0.9","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=333885&mlfb=3RT1016-1GX21-0AA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1016-1GX21-0AA2/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT1016-1GX21-0AA2?","answer":"The 3RT1016-1AG61 is a peer variant in the same SIRIUS S00 family, but it uses a different coil voltage or auxiliary configuration — verify the coil rating and aux contact count before substituting. The 3RT1016-1AR11 and 3RT1016-2AP02 are also S00 frame peers with differing coil/aux specs."},{"question":"Will 3RT1016-1GX21-0AA2 drop into a panel specified around 3RT1016-1AG61 without rewiring?","answer":"Both are Size S00 contactors with the same 45 mm width and DIN-rail mounting, so the mechanical footprint is identical. However, the coil voltage and auxiliary contact arrangement may differ — check the coil rating on the nameplate before swapping without verifying the control circuit."},{"question":"Where can I buy 3RT1016-1GX21-0AA2?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What compliance documentation does Siemens provide for 3RT1016-1GX21-0AA2?","answer":"As a SIRIUS product, it carries CE marking for the European market and is designed to meet IEC/EN 60947-4-1. RoHS and REACH declarations are available from Siemens upon request. UL/CSA listings are typical for this series but should be confirmed against the specific variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1016-1GX21-0AA2","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/3RT1016-1GX21-0AA2 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}}