{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-1AG20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-1AG20","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-1AG20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1AG20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1023-1AG20 power contactor, size S0, 45 mm width, 110 V 50/60 Hz coil, screw-type terminals, 4.5 kW at 500 V, 5.5 kW at 690 V.","salesMarkdown":"It carries a 110 V 50/60 Hz coil and uses screw-type terminals for both the main and auxiliary circuits. Motor power ratings land at 4.5 kW at 500 V and 5.5 kW at 690 V. In AC-4 duty (frequent inching/plugging), it's rated 8.5 A at 400 V — that's the number to watch for high-cycle reversing or jogging applications. The coil pulls in reliably across 0.8 to 1.1 times rated voltage at 50 Hz and 0.85 to 1.1 at 60 Hz. That's a standard hold-in range; expect dropout below the lower threshold. Width is 45 mm, height 85 mm, depth 91 mm. Main terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, max 2x 4 mm². For heavier feeds, the stranded range goes up to 2x (1 to 2.5 mm²) and 2x (2.5 to 6 mm²), max 2x 10 mm². AWG equivalents: 2x (16 to 12) solid, 2x (14 to 10) stranded, single 8 AWG. Auxiliary contacts take 2x (20 to 16) and 2x (18 to 14) AWG, single 12 AWG. Front protection is IP20; the terminal area is IP00. That means the contactor is safe from finger contact on the front but the terminals need enclosure protection — standard for open-panel mounting inside a cabinet. Short-circuit coordination is specified: Type 2 requires a gL/gG 25 A fuse; Type 1 allows up to 63 A gL/gG. That's the selectivity data a panel builder needs for the upstream protection device. The auxiliary contact block handles 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, 6 A at 230 V, and 3 A at 400 V. These are the make/break ratings for control-circuit loads — useful for PLC inputs, pilot lights, or interposing relays.","metaTitle":"Siemens 3RT1023-1AG20 SIRIUS Power Contactor, S0, 110 V 50/6","metaDescription":"Siemens 3RT1023-1AG20 SIRIUS power contactor, size S0, 45 mm wide. 110 V 50/60 Hz coil, screw terminals. Rated 4.5 kW at 500 V, 5.5 kW at 690 V. Active production. Sourced to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"91 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"45 mm","Height":"85 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":"IP00","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":"S0","Solid Or Stranded":"2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 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":"10 000 000","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":"110 V","at 500 V rated value":"4.5 kW","at 60 Hz rated value":"110 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 (16 ... 12), 2x (14 ... 10), 1x 8","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 25 A","reference code acc. to IEC 81346-2":"Q","With Type Of Coordination 1 Required":"fuse gL/gG: 63 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":"8.4 V·A","apparent pick-up power of magnet coil at AC":"64 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":"0.72","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.24","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":"0","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=231738&mlfb=3RT1023-1AG20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1AG20/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor power ratings for this contactor?","answer":"It is rated 4.5 kW at 500 V and 5.5 kW at 690 V. For AC-4 duty (high-cycle reversing), the current rating is 8.5 A at 400 V."},{"question":"What is the physical size and mounting of the 3RT1023-1AG20?","answer":"It is a size S0 contactor, 45 mm wide, 85 mm high, 91 mm deep. It mounts on 35 mm DIN rail per EN 50022 with screw-and-snap fastening, and side-by-side mounting is allowed."},{"question":"What wire sizes does the 3RT1023-1AG20 accept?","answer":"Main terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, max 2x 4 mm². For heavier feeds, stranded up to 2x 10 mm². Auxiliary terminals take 2x (20 to 16) and 2x (18 to 14) AWG, single 12 AWG."},{"question":"What short-circuit protection is required for this contactor?","answer":"For Type 2 coordination, use a gL/gG 25 A fuse. For Type 1 coordination, a gL/gG 63 A fuse is permitted."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-1AG20","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/3RT1023-1AG20 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}}