{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-3KF44-0LA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-3KF44-0LA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-3KF44-0LA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-3KF44-0LA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1026-3KF44-0LA0, S0 frame, 11 kW at AC-2 400 V, 110 VDC coil with varistor, screw-type main terminals, spring-loaded auxiliary terminals, IP20 front.","salesMarkdown":"Mounts via screw or snap-on onto 35 mm DIN rail per EN 50022 — the S0 footprint is 70 mm wide by 88 mm tall, 153 mm deep. That depth includes the coil terminals and the built-in varistor; no extra projection. Main circuit terminals are screw-type accepting 2x (1–2.5 mm²) solid/stranded up to 2x 10 mm² or 1x 8 AWG. Auxiliary and control circuit terminals are spring-loaded (2x 0.25–2.5 mm² solid, 2x 24–14 AWG), so the control wiring is tool-less — good for panel builders who want to speed up the low-voltage terminations. Type 1 coordination allows a 100 A gL/gG fuse — the contactor may be damaged but the circuit clears. Pollution degree 3 (industrial environment, conductive pollution), IP20 on the front face, IP00 at the terminals — so it's panel-mount only, not for open-air washdown areas.","metaTitle":"Siemens 3RT1026-3KF44-0LA0 SIRIUS Power Contactor, 11 kW AC-","metaDescription":"Siemens SIRIUS 3RT1026-3KF44-0LA0 power contactor, S0 frame, 11 kW at AC-2 400 V, 110 VDC coil with varistor. Screw main terminals, spring-loaded aux. Active production, sourced to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"153 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"70 mm","Height":"88 mm","Rated Value":"110 V","On The Front":"IP20","Initial Value":"0.7","Of The Terminal":"IP00","lifecycle_stage":"current","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Full-Scale Value":"1.25","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 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","Substance Prohibitance (Date)":"07/01/2006","Design Of The Surge Suppressor":"with varistor","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","For Auxiliary And Control Circuit":"spring-loaded terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 35 A","closing power of magnet coil at DC":"23 W","holding power of magnet coil at DC":"7 W","With Type Of Coordination 1 Required":"fuse gL/gG: 100 A","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","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)","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","Required Spacing For Grounded Parts At The Side":"6 mm","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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":"1","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=434242&mlfb=3RT1026-3KF44-0LA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-3KF44-0LA0/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT1026-3KF44-0LA0 drop into a panel specified for 3RT1026-1AB00?","answer":"Yes, same S0 frame, same mounting footprint, same terminal layout. The only difference is the varistor — the -3KF44-0LA0 has it built in, so no external snubber needed on the coil circuit. No rewiring required for the power or auxiliary connections."},{"question":"What compliance documentation does this contactor carry?","answer":"The evidence lists RoHS compliance with a substance prohibition date of 07/01/2006. The product is a Siemens SIRIUS brand industrial contactor, which typically carries CE and UL/CSA certifications per the SIRIUS series standards, but specific UL/CSA file numbers are not in this record."},{"question":"Where can I buy 3RT1026-3KF44-0LA0 and what is the lead time?","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 — no stock count or lead-time number is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-3KF44-0LA0","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/3RT1026-3KF44-0LA0 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}}