{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-1AH04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-1AH04","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-1AH04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1AH04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, Size S0, 3 NO main contacts, 10 A at 24 V DC coil, screw-type terminals, 45 mm width, snap-on DIN rail mounting.","salesMarkdown":"## Motor duty and switching capability At 500 V it handles 4.5 kW, and at 690 V it handles 5.5 kW, both under AC-3 duty. The auxiliary contact block (2 NO) is rated for 10 A at 24 V DC, 6 A at 230 V, and derates down to 0.3 A at 220 V DC — watch the DC switching curve if you're breaking inductive loads on the aux side. Screw-type terminals on the main circuit accept 2x (1 to 2.5 mm²) stranded or 2x (2.5 to 6 mm²) solid, with a maximum of 2x 10 mm² or 1x 8 AWG. The auxiliary terminals take 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²). Side-by-side mounting is allowed with a 6 mm gap to adjacent devices — no derating required if ambient stays within -25 to +60 °C.","metaTitle":"Siemens 3RT1023-1AH04 SIRIUS Power Contactor, 10A 24V DC, S0","metaDescription":"Siemens SIRIUS 3RT1023-1AH04 power contactor, 10A at 24V DC coil, Size S0, 3 NO main contacts, screw terminals, DIN rail mount. Current production. 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":"48 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=144324&mlfb=3RT1023-1AH04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1AH04/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3RT1023-1AH04 and how is it quoted for volume purchases?","answer":"This part is sourced through independent industrial distribution channels and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock figures or firm prices are published here."},{"question":"What is the closest functional second-source for 3RT1023-1AH04?","answer":"The peer MPN 3RT1023-1AL20 is the same Size S0 frame and same 3-pole NO configuration, but its coil is 230 V AC instead of 24 V DC. It will drop into the same DIN rail footprint and wiring pattern, but the coil voltage difference means the control circuit must be rewired if swapping between the two."},{"question":"What are the key ratings for 3RT1023-1AH04?","answer":"The contactor is rated 10 A at 24 V DC coil, 8.5 A at 400 V AC-4 motor duty, 4.5 kW at 500 V AC-3, and 5.5 kW at 690 V AC-3. It has 3 NO main contacts and 2 NO auxiliary contacts. Dimensions are 45 mm wide, 85 mm high, 140 mm deep."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-1AH04","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/3RT1023-1AH04 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}}