{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-1AF04-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-1AF04-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-1AF04-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1AF04-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 3-pole, 24 VDC coil, screw-type terminals, 45 mm width, IP20 front protection.","salesMarkdown":"This contactor is rated for motor loads up to 4.5 kW at 500 V and 5.5 kW at 690 V in AC-3 duty — the standard category for squirrel-cage motors during starting and running. That means it handles the inrush and break current of a motor up to that power without welding or excessive wear. The coil holds at 24 VDC nominal, with an operating range of 0.8 to 1.1 times rated voltage at 50 Hz. That tolerance means it stays pulled in during a sag down to about 19.2 V, but drops out reliably below that — important for undervoltage protection schemes. For coordination with upstream protection, Type 1 coordination requires a gL/gG fuse rated at 63 A, while Type 2 (no damage to the contactor) calls for a 25 A fuse. That difference matters when you're sizing the branch circuit for selectivity. Wire capacity on the main circuit accepts up to 2x 10 mm² (or 1x 8 AWG) stranded, and the control circuit takes 2x 4 mm² max. That's enough for motor feeds up to the 5.5 kW rating without piggybacking terminals.","metaTitle":"Siemens 3RT1023-1AF04-1AA0 SIRIUS Power Contactor, S0, 3-Pol","metaDescription":"Siemens SIRIUS 3RT1023-1AF04-1AA0 power contactor, size S0, 3 NO main contacts, 24 VDC coil, screw terminals, IP20 front. Active production. Sourced 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":"110 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=212769&mlfb=3RT1023-1AF04-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1AF04-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of this contactor?","answer":"The depth is 140 mm, which fits standard 200 mm deep enclosures with room for wiring behind the DIN rail."},{"question":"What wire sizes does the control circuit accept?","answer":"The control circuit terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or a maximum of 2x (0.75 to 4 mm²) solid or stranded wire."},{"question":"Will this contactor drop into a panel specified for 3RT1023-1AL20?","answer":"Both are SIRIUS S0 contactors with the same 45 mm width and DIN rail mounting, so the mechanical fit is identical. The difference is the coil voltage — this unit is 24 VDC, while the 3RT1023-1AL20 uses a different coil. Verify the control voltage before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-1AF04-1AA0","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/3RT1023-1AF04-1AA0 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}}