{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-1AD04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-1AD04","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-1AD04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1AD04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1023-1AD04 power contactor, size S0, 3 NO main contacts, AC-4 rated 8.5 A at 400 V, screw-type terminals, DIN rail mount.","salesMarkdown":"It's rated for AC-4 duty at 8.5 A on a 400 V line — that's the motor reversing / plugging / inching current, not the steady-running AC-3 number. The 45 mm width (three 17.5 mm module spaces) and 85 mm height fit standard S0 contactor panels. Side-by-side mounting is permitted — no derating gap needed between units, though the 6 mm side clearance to enclosure walls or other apparatus should be observed. The AC-4 rating at 8.5 A (400 V) governs the contactor's life under high-stress switching — motor reversing, jogging, or plugging where the contacts make and break locked-rotor current. For AC-2 duty (slip-ring motor starting) at 400 V, it handles 4 kW. The AC-12 rating (control-circuit resistive load) tops out at 10 A. Motor power ratings climb with voltage: 4.5 kW at 500 V and 5.5 kW at 690 V. Auxiliary contacts are rated for 10 A at 24 V, 6 A at 230 V, and 0.3 A at 220 V DC — enough for direct PLC input or relay coil switching. The coil itself pulls 0.8 to 1.1 A at 50 Hz rated voltage (42 V). ## Environmental and operating limits Maximum installation altitude 2 000 m without derating.","metaTitle":"Siemens 3RT1023-1AD04 SIRIUS Power Contactor, 3 NO, 8.5 A AC","metaDescription":"Siemens SIRIUS 3RT1023-1AD04 power contactor, size S0, 3 NO main contacts, 8.5 A AC-4 rating at 400 V. Screw terminals, DIN rail mount. Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"140 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","Maximum":"2 000 m","at 50 Hz":"0.8 ... 1.1","At The Side":"6 mm","On The Front":"IP20","1 Rated Value":"50 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":"42 V","at 500 V rated value":"4.5 kW","at 690 V rated value":"5.5 kW","Instantaneous Contact":"2","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 (0.5 ... 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":"40 A","Apparent holding power of magnet coil at AC":"7.8 V·A","Apparent pick-up power of magnet coil at AC":"61 V·A","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.82","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=301349&mlfb=3RT1023-1AD04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1AD04/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3RT1023-1AD04 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"What are the main contact ratings for 3RT1023-1AD04?","answer":"Three NO main contacts. AC-4 rating is 8.5 A at 400 V; AC-2 rating is 4 kW at 400 V; AC-12 resistive load rating is 10 A. Motor power at 500 V is 4.5 kW and at 690 V is 5.5 kW."},{"question":"What is the difference between 3RT1023-1AD04 and 3RT1023-1AL20?","answer":"The 3RT1023-1AL20 is the same S0 frame and contact configuration but with a different coil voltage. The 3RT1023-1AD04 uses a 42 V 50 Hz coil; the 1AL20 variant is wound for a different control voltage. Panel footprint and wiring are identical — swap without rewiring if the control voltage matches."},{"question":"What compliance documentation does Siemens provide for 3RT1023-1AD04?","answer":"As a standard SIRIUS industrial control component, it carries CE marking for the European market and is designed to meet applicable IEC/EN standards including EN 60947-4-1. RoHS and REACH declarations are available from Siemens documentation. Specific UL/CSA file numbers should be confirmed against the nameplate marking on the unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-1AD04","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/3RT1023-1AD04 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}}