{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-1AB04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-1AB04","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-1AB04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1AB04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, size S0, 3 NO main contacts, 24 V 50 Hz coil, screw-type terminals, IP20 front, 45 mm width.","salesMarkdown":"## S0 frame, 3 NO main contacts, 24 V 50 Hz coil The 45 mm width and 85 mm height mean it fits a standard 4-module-wide panel slot. Front protection is IP20; the terminals themselves are IP00, so the contactor needs enclosure protection against accidental contact with live parts. ## Motor switching ratings and coordination For AC-2 duty at 400 V it handles 4 kW, and for AC-4 (reversing/inching) at 400 V it's rated 8.5 A. At 500 V it switches 4.5 kW motor loads; at 690 V it switches 5.5 kW. Type 1 coordination requires a 63 A gL/gG fuse; Type 2 coordination needs a 25 A gL/gG fuse. The 140 mm depth fits standard 200 mm deep enclosures.","metaTitle":"Siemens 3RT1023-1AB04 SIRIUS Power Contactor, S0, 3NO, 24V 5","metaDescription":"Siemens SIRIUS 3RT1023-1AB04 power contactor, size S0, 3 NO main contacts, 24V 50Hz coil. Current production. Screw terminals, DIN rail mount. 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":"24 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=371305&mlfb=3RT1023-1AB04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1AB04/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1023-1AB04 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — no stock or price figures are listed here because they change daily."},{"question":"What is the closest functional second-source to 3RT1023-1AB04?","answer":"The 3RT1023-1AL20 is a close peer — same S0 frame, same 3 NO contacts, but with a 24 V DC coil instead of 24 V 50 Hz. The 3RT1023-1AP00 uses a 110 V 50 Hz coil. All three share the same footprint, terminal layout, and main contact ratings, so they drop into the same panel wiring without rewiring the power circuit — only the coil supply differs."},{"question":"What wire sizes does the 3RT1023-1AB04 accept?","answer":"The screw terminals accept 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), or max 2x (0.75...4 mm²) for the coil/auxiliary circuit. For the main power circuit: 2x (1...2.5 mm²), 2x (2.5...6 mm²), or max 2x 10 mm². AWG equivalents: 2x (16...12), 2x (14...10), or 1x 8 for the main contacts."},{"question":"Will 3RT1023-1AB04 drop into a panel wired for 3RT1023-1AL20?","answer":"Yes — both are size S0 with the same 45 mm width, 85 mm height, 140 mm depth, and screw terminal layout. The only difference is the coil voltage: 24 V 50 Hz on this part versus 24 V DC on the -1AL20. The power wiring and mounting hole pattern are identical, so no rewiring of the main circuit is needed — just verify the coil supply matches."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-1AB04","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/3RT1023-1AB04 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}}