{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1AF00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1AF00","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1AF00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AF00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, Size S0, 3-pole NO main contacts, 50 Hz coil, screw-type terminals, 45 mm width, DIN rail snap-on mounting.","salesMarkdown":"In AC-4 duty at 400 V it carries 15.5 A, covering reversing and inching duty on squirrel-cage motors where the contacts see full locked-rotor current each cycle. Side-by-side mounting is permitted, which keeps the rail density high when grouping multiple contactors in a motor control centre. Screw-type terminals on both the main current circuit and the auxiliary/control circuit accept solid or stranded conductors: 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²) for the control wiring, and up to 2x 10 mm² for the main power wires. The pollution degree is rated 3, meaning the contactor is designed for industrial environments where conductive pollution may occur — no additional conformal coating required for a standard panel. For Type 1 coordination (contactor may need replacement after fault), a 100 A gL/gG fuse is allowed. These values define the maximum short-circuit protection the contactor can withstand without welding or exploding; the actual fuse size should be selected per the motor full-load current and the coordination study for the panel. Above 40 °C, derating of the continuous current may apply — consult the thermal curve for the specific duty class.","metaTitle":"Siemens 3RT1026-1AF00 SIRIUS Power Contactor, Size S0, 50 Hz","metaDescription":"Siemens 3RT1026-1AF00 SIRIUS power contactor, Size S0, 3-pole NO, 50 Hz coil, 11 kW AC-2 at 400 V, 15.5 A AC-4. Screw terminals, DIN rail mount. Current lifecycle. Sourced to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"91 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","On The Front":"IP20","1 Rated Value":"50 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":"110 V","at 500 V rated value":"11 kW","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":"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","Required Spacing For Grounded Parts At The Side":"6 mm","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","number of NC contacts for auxiliary contacts instantaneous contact":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","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=410406&mlfb=3RT1026-1AF00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AF00/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to the 3RT1026-1AF00?","answer":"The 3RT1026-1AB00 is the same Size S0 frame with the same AC-2 and AC-4 ratings, but its coil is wound for a different control voltage. The 3RT1026-1AF00 uses a 50 Hz 110 V coil; the -1AB00 variant uses a different coil voltage. They share the same mechanical footprint and terminal layout, so a panel designed for one can accept the other without rewiring the power circuit — only the control supply needs to match the coil rating."},{"question":"Will the 3RT1026-1AF00 drop into a panel specified around the 3RT1026-1AB00?","answer":"Yes, both are Size S0 contactors with the same 45 mm width, DIN-rail snap-on mounting, and screw-type terminals. The mechanical fit is identical; the only difference is the coil voltage. Verify that the control circuit supplies 110 V at 50 Hz before substituting."},{"question":"Where can I buy the 3RT1026-1AF00 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What compliance documentation does Siemens provide for the 3RT1026-1AF00?","answer":"As a standard SIRIUS catalogue product, it carries the usual Siemens declarations of conformity for the Low Voltage Directive and relevant harmonised standards. Specific certificates (UL, CSA, IEC) and the EU declaration of conformity are available from Siemens Industry Online Support by entering the order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1AF00","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/3RT1026-1AF00 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}}