{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1024-3AF04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1024-3AF04","canonicalUrl":"https://aoctrl.com/siemens/3RT1024-3AF04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1024-3AF04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, S0 frame, 3 NO main contacts, 7.5 kW at 500 V / 690 V, screw-type terminals, 45 mm width, IP20 front, DIN EN 50022 rail mount.","salesMarkdown":"## SIRIUS S0 power contactor — 3RT1024-3AF04 The Siemens 3RT1024-3AF04 is a SIRIUS S0-frame power contactor with three normally-open main contacts and no normally-closed main contacts. It switches motor loads up to 7.5 kW at both 500 V and 690 V, with an AC-4 rating of 12.5 A at 400 V for reversing or inching duty. Screw-type terminals accept 2x (0.25…2.5 mm²) solid or stranded, up to 2x 10 mm² max. The front face carries an IP20 rating; the terminals themselves are IP00. Pollution degree 3 means it tolerates conductive dust and condensation typical of industrial control panels. ## Integration and panel fit The S0 frame measures 45 mm wide, 85 mm high, and 140 mm deep — a standard footprint for a contactor of this rating class. The screw terminals are accessible from the front for wiring with a standard screwdriver. Type 2 coordination (fault withstand without damage to the contactor) requires a gL/gG fuse rated 25 A; Type 1 coordination allows up to 63 A. The auxiliary contact block is separate — this unit carries no built-in auxiliaries, so plan for an add-on block if feedback or interlocking is needed.","metaTitle":"Siemens 3RT1024-3AF04 SIRIUS Power Contactor, S0, 3 NO, 7.5","metaDescription":"Siemens 3RT1024-3AF04 SIRIUS power contactor, S0 frame, 3 NO main contacts, 7.5 kW at 500/690 V, screw terminals, DIN rail mount, IP20 front. Current lifecycle stage. Sourced to or","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"140 mm","Solid":"2x (0.25 ... 2.5 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":"7.5 kW","at 690 V rated value":"7.5 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":"5.5 kW","at AC-4 at 400 V rated value":"12.5 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 (0.25 ... 1.5 mm²)","Number of poles for main current circuit":"3","at AWG conductors for auxiliary contacts":"2x (24 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"spring-loaded 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","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","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=432483&mlfb=3RT1024-3AF04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1024-3AF04/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT1024-3AF04?","answer":"The peer 3RT1023-1AL20 is a similar SIRIUS S0 contactor but with a 24 VDC coil and different auxiliary configuration — verify coil voltage and aux contact count before substituting. The 3RT1024-3AF04 uses a 50 Hz coil rated 110 V."},{"question":"Will 3RT1024-3AF04 drop into a panel specified for 3RT1023-1AL20?","answer":"Mechanically yes — both are S0 frame, same 45 mm width, same DIN rail footprint. The difference is the coil: 3RT1024-3AF04 is 110 V 50 Hz, while 3RT1023-1AL20 is 24 VDC. Rewiring the control circuit is required."},{"question":"How do I get current pricing and availability for 3RT1024-3AF04?","answer":"Submit an RFQ through this listing. The part is sourced through independent distribution channels; availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings for 3RT1024-3AF04?","answer":"Three NO main contacts, no NC. Rated 7.5 kW at both 500 V and 690 V. AC-4 switching current is 12.5 A at 400 V. Coil is 110 V 50 Hz. Screw terminals accept up to 2x 10 mm². Operating temperature -25 to +60 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1024-3AF04","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/3RT1024-3AF04 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}}