{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT6026-1KF40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT6026-1KF40","canonicalUrl":"https://aoctrl.com/siemens/3RT6026-1KF40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT6026-1KF40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS coupling contactor 3RT6026-1KF40, size S0, 110 V rated coil voltage, screw-type terminals, built-in varistor surge suppression, 45 mm width, snap-on DIN rail mounting.","salesMarkdown":"The Siemens 3RT6026-1KF40 is a SIRIUS coupling contactor in the S0 frame size — a 45 mm wide, 85 mm tall, 151 mm deep unit that screws or snaps onto 35 mm DIN rail per DIN EN 50022. It is a current-production part (lifecycle stage: current) and sits in the panel as an interface between a control signal and a load circuit, typically switching motor loads up to 23 kW at 400 V or 40 kW at 690 V in AC-3 duty. The coil is rated 110 V (the rated value), drawing 6 A at 24 V, 1 A at 110 V, and 0.3 A at 220 V — these are the inrush or hold currents depending on the control voltage applied. A built-in varistor surge suppressor is wired across the coil, so you don't need to add an external snubber for inductive load switching; just verify polarity if your control circuit uses DC. ## Switching frequency and endurance Maximum mechanical switching rate is 10,000,000 cycles typical. Electrical switching frequency depends on duty: 1,000 cycles/hour at AC-1 (resistive), 750 cycles/hour at AC-3 or AC-3e (standard motor start/run), 250 cycles/hour at AC-4 (plugging/inching), and 1,500 cycles/hour at DC. For a high-cycle conveyor or pump application, stay within the AC-3 limit of 750 ops/hour to keep contact life predictable. Pollution degree 3 (industrial environment with conductive pollution). ## Terminals and wiring Both main and auxiliary/control circuits use screw-type terminals. Main contacts accept 2x (0.5…1.5 mm²) or 2x (0.75…2.5 mm²) solid or stranded, or AWG 2x (16…12) and 2x (14…8). Minimum cross-section is 10 mm² at both 40 °C and 60 °C ambient. Insulation voltage is rated 690 V, with AC-3/AC-3e maximum operating voltage also 690 V.","metaTitle":"Siemens 3RT6026-1KF40 SIRIUS Coupling Contactor, 110 V Coil,","metaDescription":"Siemens 3RT6026-1KF40 SIRIUS coupling contactor, 110 V AC coil, S0 size, 45 mm width, screw terminals, varistor suppression. Current production, available to order. Quoted on reque","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"151 mm","Width":"45 mm","at DC":"1 500 1/h","Height":"85 mm","Rated Value":"110 V","During Storage":"-55 ... +80 °C","at AC-1 maximum":"1 000 1/h","at AC-3 maximum":"750 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022","at AC-3e maximum":"750 1/h","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S0","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"Coupling contactor","at 24 V rated value":"6 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":"10 A","at 400 V rated value":"3 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-3 rated value maximum":"690 V","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"10 mm²","at 60 °C minimum permissible":"10 mm²","Design Of The Surge Suppressor":"with varistor","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"13.3 kW","at 400 V at 60 °C rated value":"23 kW","at 690 V at 60 °C rated value":"40 kW","for AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"No","With Type Of Assignment 2 Required":"gL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 35 A","closing power of magnet coil at DC":"4.5 W","holding power of magnet coil at DC":"4.5 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"gL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 100 A","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","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)","at ambient temperature 40 °C rated value":"40 A","at ambient temperature 60 °C rated value":"35 A","Type Of Voltage Of The Control Supply Voltage":"DC","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","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":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e2d8c5c650c1b02c4d550074d2103a30.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=580203&mlfb=3RT6026-1KF40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT6026-1KF40/alternatives.json"},"ai":{"faq":[{"question":"What is the coil voltage for 3RT6026-1KF40?","answer":"The coil rated value is 110 V. At 24 V it draws 6 A, at 110 V it draws 1 A, and at 220 V it draws 0.3 A."},{"question":"Can 3RT6026-1KF40 be mounted side-by-side on DIN rail?","answer":"Yes, side-by-side mounting is permitted, and the contactor can be rotated ±180° on a vertical surface or tilted ±22.5°."},{"question":"What compliance documentation does Siemens provide for 3RT6026-1KF40?","answer":"RoHS compliance is documented with a substance prohibition date of 05/01/2012. The product is a Siemens SIRIUS coupling contactor, which typically carries CE, UL, CSA, and other regional certifications as standard for the series."},{"question":"Where can I buy 3RT6026-1KF40 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT6026-1KF40","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/3RT6026-1KF40 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}}