{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-3AN20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-3AN20","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-3AN20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-3AN20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1023-3AN20 power contactor, S0 frame, screw-type terminals, 8.5 A AC-4 at 400 V, 4 kW AC-2 at 400 V, 90 mm depth, 45 mm width, screw and snap-on 35 mm DIN rail.","salesMarkdown":"The 4 kW AC-2 rating at 400 V covers slip-ring motor starting, a less punishing cycle but still a real motor load, not a resistive heater. ## Panel Fit & Wiring Screw terminals accept solid or stranded conductors: 2x (0.25 to 2.5 mm²) for control wiring, and up to 2x 10 mm² or 1x 8 AWG for the main circuit. IP20 on the front, IP00 at the terminals: the terminal area is live and needs finger-safe shrouding in the panel build. ## Coordination & Protection Type 1 coordination (contactor may be damaged but no fire risk) allows a 63 A gL/gG fuse.","metaTitle":"Siemens 3RT1023-3AN20 SIRIUS Power Contactor, S0 Frame, 8.5","metaDescription":"Siemens 3RT1023-3AN20 SIRIUS power contactor, S0 frame, screw terminals, 8.5 A AC-4 at 400 V. Current lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"90 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"85 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":"IP00","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Size of contactor":"S0","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":"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","Instantaneous Contact":"0","Side-by-side mounting":"Yes","For Main Current Circuit":"screw-type terminals","Single Or Multi-Stranded":"2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 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: 25 A","at AWG conductors for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","With Type Of Coordination 1 Required":"fuse gL/gG: 63 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 (0.25 ... 1.5 mm²)","Number of poles for main current circuit":"3","at AWG conductors for auxiliary contacts":"2x (24 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"spring-loaded terminals","at ambient temperature 40 °C rated value":"40 A","Apparent holding power of magnet coil at AC":"8.4 V·A","Apparent pick-up power of magnet coil at AC":"64 V·A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.72","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","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=527296&mlfb=3RT1023-3AN20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-3AN20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1023-3AN20 and get a price?","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 quote."},{"question":"What are the key ratings for 3RT1023-3AN20?","answer":"The contactor is rated 8.5 A in AC-4 duty at 400 V for severe motor switching, and 4 kW in AC-2 duty at 400 V for slip-ring motor starting. It accepts screw terminals up to 2x 10 mm² or 1x 8 AWG for the main circuit."},{"question":"What is the depth of 3RT1023-3AN20?","answer":"The depth is 90 mm, with a width of 45 mm and height of 85 mm. It mounts on 35 mm DIN rail."},{"question":"Will 3RT1023-3AN20 drop into a panel specified around 3RT1023-1AL20?","answer":"Both are S0 frame contactors from the same SIRIUS family, sharing the same 45 mm width and 35 mm DIN rail mounting. The terminal layout and footprint are identical, so it will physically fit without rewiring. The difference is in the coil voltage and auxiliary contact configuration — verify those against your control circuit before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-3AN20","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/3RT1023-3AN20 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}}