{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1AL24","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1AL24","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1AL24","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AL24","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 3RT1026-1AL24, 11 kW AC-2 at 400 V, screw-type terminals, 45 mm width, DIN rail mount.","salesMarkdown":"For reversing or inching duty (AC-4), the same contactor is rated 15.5 A at 400 V, which is a significantly lower power threshold than the AC-2 figure; if your application involves frequent plugging or jogging, the AC-4 current is the binding limit, not the AC-2 kW number. Short-circuit coordination is specified for Type 1 and Type 2: with Type 2 coordination (no damage to the contactor after a fault), use a gL/gG fuse rated 35 A; with Type 1 coordination (contactor may need replacement after a fault), the fuse can go up to 100 A. This lets a panel designer choose between protecting the contactor (Type 2) or allowing a higher fuse rating (Type 1) depending on the selectivity study. Auxiliary contact ratings span the common control voltages: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V DC. The DC ratings drop sharply with voltage — at 220 V DC the contact is only rated 0.3 A, so if you are switching a DC coil or solenoid at that voltage, verify the load current against that figure, not the AC rating. Mechanical endurance is listed at 10 million operations typical — this is the unloaded mechanical life; electrical life under load will be lower and depends on the switched current and duty cycle. For high-cycle applications (conveyor sortation, packaging machines), factor in a de-rate for the electrical endurance curve. The 45 mm width (size S0) means it occupies a single 45 mm module on the rail — standard for this frame size. Side-by-side mounting is permitted with no spacing, which simplifies panel layout and keeps the rail fill factor tight. Main current circuit uses screw-type terminals accepting 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) solid/stranded. For heavier feeds, the terminal also accepts 2x (1 to 2.5 mm²) and 2x (2.5 to 6 mm²) stranded, or max 2x 10 mm². AWG equivalents for main contacts: 2x (16 to 12), 2x (14 to 10), or 1x 8 AWG. Auxiliary and control circuit terminals accept 2x (20 to 16), 2x (18 to 14), or 1x 12 AWG. Strip length and torque values are on the nameplate — no special tooling beyond a standard screwdriver. Enclosure protection: IP20 on the front (finger-safe above the mounting surface), IP00 at the terminals (the connection points are not protected against accidental contact). In a typical enclosed panel this is fine — the panel door provides the outer IP rating. For exposed installations, a terminal cover or shrouding is needed. ## Coil and control Coil operates at 50 Hz (230 V rated) and 60 Hz (230 V rated), with an operating range of 0.8 to 1.1 times the rated voltage at 50 Hz and 0.85 to 1.1 at 60 Hz. This means at 50 Hz the coil will pick up and hold at 184 V (0.8 × 230 V) and must not exceed 253 V (1.1 × 230 V). At 60 Hz the pickup threshold is slightly higher at 195.5 V (0.85 × 230 V). The coil is designed for 50/60 Hz commonality, so it works on both supply frequencies without a change.","metaTitle":"Siemens 3RT1026-1AL24 SIRIUS Power Contactor, S0, 11 kW AC-2","metaDescription":"Siemens 3RT1026-1AL24 SIRIUS power contactor, size S0, 11 kW at AC-2 400 V. Active production. Screw terminals, 45 mm wide, DIN rail mount. Source to RFQ.","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","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","Of The Terminal":"IP00","lifecycle_stage":"current","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Size Of Contactor":"S0","Solid Or Stranded":"2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 mm²","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":"230 V","at 500 V rated value":"11 kW","at 60 Hz rated value":"230 V","at 690 V rated value":"11 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"11 kW","at AC-4 at 400 V rated value":"15.5 A","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 35 A","reference code acc. to IEC 81346-2":"Q","Ambient Temperature During Operation":"-25 ... +60 °C","With Type Of Coordination 1 Required":"fuse gL/gG: 100 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","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","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","apparent holding power of magnet coil at AC":"8.4 V·A","apparent pick-up power of magnet coil at AC":"64 V·A","Type Of Voltage Of The Control Supply Voltage":"AC","Required Spacing For Grounded Parts At The Side":"6 mm","Inductive Power Factor With Closing Power Of The Coil":"0.72","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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","number of NC contacts for auxiliary contacts instantaneous contact":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","Of The Contactor With Added Electronically Optimized 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=453002&mlfb=3RT1026-1AL24","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AL24/alternatives.json"},"ai":{"faq":[{"question":"What wire sizes does the 3RT1026-1AL24 accept on the main and auxiliary terminals?","answer":"Main terminals accept solid/stranded: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²) and also 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), max 2x 10 mm². AWG: 2x (16 to 12), 2x (14 to 10), 1x 8. Auxiliary terminals accept 2x (20 to 16), 2x (18 to 14), 1x 12 AWG."},{"question":"What compliance documentation is available for 3RT1026-1AL24?","answer":"The part carries the IEC 60947-4-1 standard for contactors (implied by the AC-2/AC-4 ratings and pollution degree 3). The IEC 81346-2 reference code Q is assigned. For specific RoHS, REACH, or UL documentation, the manufacturer's standard declarations apply — these are available through the Siemens Industry Online Support portal. The part is designed for global use with 50/60 Hz coil commonality."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1AL24","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/3RT1026-1AL24 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}}