{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2636-1AK65","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2636-1AK65","canonicalUrl":"https://aoctrl.com/siemens/3RT2636-1AK65","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2636-1AK65","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS capacitor contactor, size S2, 3RT2636-1AK65, 110V AC 50Hz / 120V AC 60Hz coil, screw terminals, screw and snap-on 35mm DIN rail mounting.","salesMarkdown":"The Siemens 3RT2636-1AK65 is a SIRIUS capacitor contactor, size S2, designed specifically for switching capacitor banks in power factor correction (PFC) applications. Unlike a standard motor contactor, this part is built to handle the high inrush currents and transient loads that capacitors present when they energize. The switching capacity varies with the applied voltage: at 230 V AC it handles 6 A, at 400 V AC it handles 3 A, and at 690 V AC the rating drops to 0 A — meaning this contactor is not intended for 690 V capacitor banks. At 24 V it switches 6 A, at 60 V it switches 2 A, and at 110 V it switches 1 A. These are the AC switching ratings for the capacitor load type, not general-purpose or motor ratings. Maximum switching frequency is 100 operations per hour at 230 V, 240 V, and 400 V. At 480 V it drops to 60 ops/h, at 500 V to 55 ops/h, at 600 V to 40 ops/h, and at 690 V to 30 ops/h. These limits reflect the thermal stress of capacitor switching; exceeding them risks contact welding or premature wear. The contactor measures 65 mm wide, 114 mm high, and 130 mm deep — a size S2 footprint that fits standard 35 mm DIN rail per DIN EN 50022. That gives panel builders room to fit it into tight enclosures. Terminals accept solid conductors from 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². For stranded wire, the range is 2x (16 to 35 mm²) or 1x (16 to 50 mm²). The coil connection uses screw-type terminals.","metaTitle":"Siemens 3RT2636-1AK65 SIRIUS Capacitor Contactor, S2, 110VAC","metaDescription":"Siemens 3RT2636-1AK65 SIRIUS capacitor contactor, size S2, 110V AC 50Hz / 120V AC 60Hz coil. Rated for capacitor bank switching. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"130 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"65 mm","at AC":"10 ... 18 ms","title":"3RT2636-1AK65","Height":"114 mm","at 24 V":"6 A","at 60 V":"2 A","Stranded":"2x (16 ... 35 mm²), 1x (16 ... 50 mm²)","at 110 V":"1 A","at 125 V":"0.9 A","at 220 V":"0.3 A","at 230 V":"6 A","at 400 V":"3 A","at 50 Hz":"0.8 ... 1.1","at 690 V":"0 A","at 40 °C":"1x 35 mm²","at 60 °C":"1x 50 mm²","Attachable":"1","Arcing Time":"10 ... 20 ms","description":"capacitor contactor, AC-6b 50 kVAr, / 400 V, 3-pole, 110 V AC, 50 Hz / 120 V, 60 Hz, auxiliary contacts: 2 NC, screw terminal, size: S2","1 Rated Value":"50 Hz","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Type Of Voltage":"AC","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 230 V maximum":"100 1/h","at 240 V maximum":"100 1/h","at 400 V maximum":"100 1/h","at 480 V maximum":"60 1/h","at 500 V maximum":"55 1/h","at 600 V maximum":"40 1/h","at 690 V maximum":"30 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":"S2","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Product Brand Name":"SIRIUS","Product Designation":"capacitor contactors","at 50 Hz rated value":"110 ... 110 V","at 60 Hz rated value":"120 ... 120 V","Instantaneous Contact":"0","For Main Current Circuit":"screw-type terminals","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","Substance Prohibitance (Date)":"05/01/2014","For Grounded Parts At The Side":"10 mm","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","At Contactor For Auxiliary Contacts":"Screw-type terminals","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","With Side-By-Side Mounting At The Side":"10 mm","Electrical Endurance (Operating Cycles)":"200 000","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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"3","Contact Reliability Of Auxiliary Contacts":"0.00000001","mirror contact according to IEC 60947-4-1":"No","apparent holding power of magnet coil at AC":"16 VA","apparent pick-up power of magnet coil at AC":"190 VA","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"0","Type Of Voltage Of The Control Supply Voltage":"AC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Inductive Power Factor With Closing Power Of The Coil":"0.72","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.37","Of The Contactor With Added Auxiliary Switch Block Typical":"3 000 000","operational current of auxiliary contacts at AC-12 maximum":"10 A","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","AWG number as coded connectable conductor cross section for main contacts":"18 ... 0","For Short-Circuit Protection Of The Main Circuit With Type Of Coordination 1 Required":"gG: 160 A (690 V, 50 kA)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$128.27","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/976cca750a2c3b434034af825da92cee.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1022657&mlfb=3RT2636-1AK65"},"ai":{"faq":[{"question":"What are the key switching ratings for this capacitor contactor?","answer":"At 230 V AC it switches 6 A, at 400 V AC it switches 3 A, and at 690 V AC the rating is 0 A — it is not intended for 690 V capacitor banks. At 24 V it switches 6 A, at 60 V it switches 2 A, and at 110 V it switches 1 A."},{"question":"What is the coil voltage for the 3RT2636-1AK65?","answer":"The coil is rated for 110 V AC at 50 Hz and 120 V AC at 60 Hz."},{"question":"What is the physical size and mounting of this contactor?","answer":"It is a size S2 contactor measuring 65 mm wide, 114 mm high, and 130 mm deep. It mounts on 35 mm DIN rail per DIN EN 50022 via screw and snap-on fastening, with flexible orientation options."},{"question":"What conductor sizes does the 3RT2636-1AK65 accept?","answer":"Solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². Stranded conductors: 2x (16 to 35 mm²) or 1x (16 to 50 mm²)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2636-1AK65","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/3RT2636-1AK65 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}