{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-1AD20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-1AD20","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-1AD20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1AD20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 3RT1023-1AD20, 24 VDC coil, screw terminals, 45 mm width, IP20 front, DIN-rail mount.","salesMarkdown":"Rated for AC-2 duty at 4 kW and AC-4 at 8.5 A at 400 V, it handles motor starting and inching applications. The coil pulls in at 24 VDC and holds across the rated voltage tolerance (0.8 to 1.1 x Us at 50 Hz). For DC switching, the contactor is rated 10 A at 24 V, dropping to 0.3 A at 220 V — so if you're switching a DC load, match the voltage to the current column. Motor power ratings go up to 4.5 kW at 500 V and 5.5 kW at 690 V, which covers most 400 V class motors in a standard industrial line. For short-circuit protection, type 1 coordination calls for a 63 A gL/gG fuse; type 2 coordination needs a 25 A gL/gG fuse. The smaller fuse limits let-through energy and protects the contactor better — use type 2 if the panel requires minimal downtime after a fault. The front face is IP20, so it's touch-safe inside an enclosure; the terminals themselves are IP00, meaning they need to be inside a panel. Terminal capacity accepts up to 2x 10 mm² stranded or 1x 8 AWG for the main circuit, with solid wire options down to 0.5 mm² for control wiring. Dimensions: 85 mm tall, 45 mm wide, 91 mm deep. That 91 mm depth is the full body — check your enclosure depth if you're mounting it on a backplate with a shallow gland plate.","metaTitle":"Siemens 3RT1023-1AD20 SIRIUS Power Contactor, S0, 24 VDC Coi","metaDescription":"Siemens 3RT1023-1AD20 SIRIUS power contactor, size S0, 24 VDC coil, screw terminals, IP20 front, DIN-rail mount. Rated for motor loads up to 5.5 kW at 690 V. Active production. Ava","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","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":"42 V","at 500 V rated value":"4.5 kW","at 60 Hz rated value":"42 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 (0.5 ... 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":"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","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=337384&mlfb=3RT1023-1AD20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1AD20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1023-1AD20 and how do I get a price?","answer":"The 3RT1023-1AD20 is available to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time."},{"question":"What is 3RT1023-1AD20's listed depth?","answer":"The depth is 91 mm. That's the full body dimension — account for it in your enclosure depth when mounting on a backplate."},{"question":"Will 3RT1023-1AD20 drop into a panel specified around 3RT1023-1AL20 without rewiring?","answer":"Both are SIRIUS S0 contactors with the same 45 mm width and DIN-rail footprint, so the mechanical fit is identical. The difference is the coil voltage: 3RT1023-1AD20 uses a 24 VDC coil, while 3RT1023-1AL20 uses a different coil voltage. If your panel wiring and power supply match 24 VDC, it drops in without rewiring."},{"question":"What compliance documentation does this brand provide for 3RT1023-1AD20?","answer":"Siemens provides standard compliance documentation including RoHS and REACH declarations, plus UL and IEC certifications for the SIRIUS contactor line. Specific certificates are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-1AD20","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/3RT1023-1AD20 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}}