{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-3AP08-1MA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-3AP08-1MA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-3AP08-1MA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-3AP08-1MA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1026-3AP08-1MA2, 3-pole, size S0, 11 kW rated motor power at 400 V AC-3, screw-type terminals, 45 mm width.","salesMarkdown":"At 45 mm wide and 85 mm tall, it occupies a single module width on the rail, leaving space alongside for overload relays and auxiliary contact blocks. The headline AC-3 rating of 11 kW at 400 V means this contactor is sized for a motor drawing roughly 22 A under full load at that voltage — the AC-3 duty class covers starting and plugging, where the contactor closes on inrush and breaks the running current. For the more demanding AC-4 duty (inching, reversing, plugging with full load), the rated operating current drops to 15.5 A at 400 V, so if your application requires frequent reversing or jogging, you need to stay within that lower current envelope. For resistive loads (AC-12), the maximum operating current is 10 A. The auxiliary contact ratings span from 10 A at 24 V down to 0.3 A at 220 V, covering typical PLC and relay control circuits. With Type 1 coordination (contactor may need replacement after a fault), the fuse can be 100 A. This lets you balance protection level against fuse size in the panel design. ## Mounting, Wiring, and Environmental Fit The contactor accepts screw-type terminals for the main current circuit, with wire ranges from 2x (0.25 to 2.5 mm²) solid up to 2x 10 mm² stranded, or 2x (16 to 12 AWG) solid. Finely stranded wire with ferrule is handled at 2x (0.25 to 1.5 mm²). Strip length and torque values follow standard Siemens SIRIUS practice for the S0 frame. The front face carries an IP20 rating, meaning finger-safe touch protection once wired — standard for inside a locked panel. The terminal area itself is rated IP00, so live parts are exposed during installation; normal practice is to de-energize before working on the terminals. For high-cycle applications (frequent starts per hour), factor the electrical life derating from the Siemens SIRIUS application manual.","metaTitle":"Siemens 3RT1026-3AP08-1MA2 SIRIUS Power Contactor, 11 kW at","metaDescription":"Siemens SIRIUS 3RT1026-3AP08-1MA2 power contactor, 3-pole, size S0, 11 kW at 400 V AC-3. Screw terminals, 45 mm wide. 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 (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"85 mm","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 400 V rated value":"11 kW","at 50 Hz rated value":"230 V","at 500 V rated value":"11 kW","at 690 V rated value":"11 kW","Instantaneous Contact":"3","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":"11 kW","at AC-4 at 400 V rated value":"15.5 A","With Type Of Assignment 2 Required":"fuse gL/gG: 35 A","operating current at AC-12 maximum":"10 A","at AWG conductors for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","With Type Of Coordination 1 Required":"fuse gL/gG: 100 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","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","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","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","operating current at AC-15 at 230 V rated value":"6 A","operating current at AC-15 at 400 V rated value":"3 A","Inductive Power Factor With Closing Power Of The Coil":"0.82","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","Of The Contactor With Added Electronics-Compatible Auxiliary Switch Block Typical":"5 000 000","type of connectable conductor cross-sections at AWG conductors for auxiliary contacts":"2x (24 ... 14)"}},"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=442544&mlfb=3RT1026-3AP08-1MA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-3AP08-1MA2/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"The contactor is 45 mm wide, 85 mm tall, and 140 mm deep. It mounts on 35 mm DIN rail and requires a 6 mm gap when mounted side-by-side."},{"question":"What wire sizes does the screw terminal accept?","answer":"Main circuit terminals accept 2x (0.25 to 2.5 mm²) solid, 2x (1 to 2.5 mm²) stranded, up to 2x 10 mm², or 2x (16 to 12 AWG) solid. Finely stranded with ferrule: 2x (0.25 to 1.5 mm²)."},{"question":"What fuse rating is needed for Type 2 coordination?","answer":"For Type 2 coordination (no damage to the contactor after a short circuit), use a gL/gG fuse rated at 35 A. For Type 1 coordination, the fuse can be 100 A."},{"question":"How does this compare to the 3RT1034-1AN60-1AA0?","answer":"The 3RT1034-1AN60-1AA0 is a larger-frame contactor (S2 or S3 size) with higher current ratings. The 3RT1026-3AP08-1MA2 is an S0 frame, 45 mm wide, rated 11 kW at 400 V AC-3. The 3RT1034 will not drop into the same DIN-rail footprint without panel modification — it is physically larger and requires different terminal spacing and fuse coordination."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-3AP08-1MA2","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/3RT1026-3AP08-1MA2 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}}