{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-3AG20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-3AG20","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-3AG20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-3AG20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 3RT1023-3AG20, screw-type terminals, 5.5 kW rated power at 690 V AC-3, 45 mm width, IP20 front.","salesMarkdown":"The 3RT1023-3AG20 is a SIRIUS power contactor in frame size S0, delivering 5.5 kW at 690 V in AC-3 duty — that's the motor-switching rating that governs real panel fit, not the higher resistive-load figure. For a 400 V motor circuit, the AC-3 rating drops to 4.5 kW, so size the contactor to the load's nameplate kW, not the line voltage. The 45 mm width and snap-on DIN rail mount (DIN EN 50022) mean it occupies one standard 45 mm module slot in a panel. Rated operational current at AC-4 (the most demanding duty — plugging and inching) is 8.5 A at 400 V. That's the number to check if the application involves frequent reversing or jogging; AC-3 is for normal start-run-stop cycles. The coil operates on 50/60 Hz with a voltage tolerance of 0.8 to 1.1 times rated at 50 Hz and 0.85 to 1.1 at 60 Hz. That 0.8 lower bound at 50 Hz means it holds in during a brownout down to 80% of nominal coil voltage, which matters for ride-through on marginal utility feeds. Main circuit terminals are screw-type, accepting 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or up to 2x 10 mm² stranded. For AWG, that's 2x (16 to 12), 2x (14 to 10), or 1x 8. For a panel originally specified around the 3RT1023-1AL20 variant, the 3RT1023-3AG20 shares the same S0 frame, 45 mm width, and DIN-rail mounting footprint. The difference is in the coil voltage range and terminal type; verify coil compatibility before drop-in substitution.","metaTitle":"Siemens 3RT1023-3AG20 SIRIUS Power Contactor, S0, 5.5 kW/690","metaDescription":"Siemens 3RT1023-3AG20 SIRIUS power contactor, size S0, screw terminals, 5.5 kW at 690 V, AC-3. Current production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"90 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 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":"110 V","at 500 V rated value":"4.5 kW","at 60 Hz rated value":"110 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 (0.25 ... 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":"8.4 V·A","Apparent pick-up power of magnet coil at AC":"64 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":"0.72","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=389083&mlfb=3RT1023-3AG20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-3AG20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RT1023-3AG20?","answer":"Sourced to order through independent distribution. Availability and current pricing are confirmed at quote time against an RFQ."},{"question":"What is the closest functional second-source for the 3RT1023-3AG20?","answer":"The 3RT1023-1AL20 is the same S0 frame size and 45 mm width, but check coil voltage and terminal type — the -3AG20 uses screw terminals while the -1AL20 may differ. Footprint and DIN-rail mount are identical."},{"question":"What is the depth of the 3RT1023-3AG20?","answer":"The depth is 90 mm from the mounting surface to the front of the contactor."},{"question":"What wire sizes does the 3RT1023-3AG20 accept?","answer":"Screw terminals accept 2x (0.25 to 2.5 mm²) solid, 2x (1 to 2.5 mm²) stranded, 2x (2.5 to 6 mm²) stranded, or up to 2x 10 mm² stranded. AWG equivalents are 2x (16 to 12), 2x (14 to 10), or 1x 8."},{"question":"Will the 3RT1023-3AG20 drop into a panel specified for the 3RT1023-1AL20?","answer":"Yes, mechanically — same S0 frame, 45 mm width, and DIN EN 50022 rail mount. Electrically, verify the coil voltage range matches your control circuit, as the -3AG20 uses a different coil specification than the -1AL20."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-3AG20","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/3RT1023-3AG20 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}}