{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1265-6AP36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1265-6AP36","canonicalUrl":"https://aoctrl.com/siemens/3RT1265-6AP36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1265-6AP36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1265-6AP36 vacuum contactor, S10 size, 220-240 V AC 50/60 Hz coil, screw fixing, 70-240 mm² stranded main circuit, 206 mm depth.","salesMarkdown":"## Vacuum contactor for high-cycle motor switching The 3RT1265-6AP36: Vacuum interrupters suppress the arc inside a sealed bottle, so the contact tips don't erode the way open-air contacts do — that's why the mechanical endurance is listed at 10,000,000 typical operations and the max switching rate hits 750 cycles per hour in AC-3 duty. For a line that cycles a conveyor or a pump every few seconds, that matters. ## Coil voltage and pick-up tolerance That means on a nominal 230 V line the contactor pulls in reliably at 184 V and holds in up to 264 V — useful when the panel sits at the end of a long feeder where voltage sag is a known issue. For the main circuit, stranded copper from 70 mm² up to 240 mm² — that's a big cable, sized for the full current rating of the S10 frame. ## Mounting and enclosure fit Fastening is by screw fixing through a single 11 mm-diameter hole. Physical envelope: 210 mm high, 145 mm wide, 206 mm deep. ## Operating conditions and thermal limits The arcing time is 10-15 ms, and the opening time at both AC and DC is 40-80 ms. Switching rates vary by duty: AC-1 and AC-3 max out at 750 operations per hour, while AC-2 and AC-4 are limited to 250 per hour — the difference reflects the severity of the breaking arc under inductive vs resistive loads.","metaTitle":"Siemens 3RT1265-6AP36 SIRIUS Vacuum Contactor, S10","metaDescription":"Siemens 3RT1265-6AP36 SIRIUS vacuum contactor, S10 size, 220-240 V AC coil. Screw fixing, 70-240 mm² stranded. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"206 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"145 mm","at AC":"40 ... 80 ms","at DC":"40 ... 80 ms","title":"3RT1265-6AP36","Height":"210 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"70 ... 240 mm²","at 50 Hz":"0.9","at 60 Hz":"0.9","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"220 ... 240 V","description":"vacuum contactor AC-3e/AC-3 265 A, 132 kW / 400 V, 3-pole, Uc: 220-240 V AC(50-60 Hz) / DC drive: conventional auxiliary contacts 2 NO + 2 NC main circuit: busbar control and auxiliary circuit: screw terminal","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Number Of Holes":"1","at AC-1 maximum":"750 1/h","at AC-2 maximum":"250 1/h","at AC-3 maximum":"750 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw fixing","Full-Scale Value":"1.1","at AC-3e maximum":"750 1/h","Diameter Of Holes":"11 mm","Mounting Position":"+/-22,5° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface; standing, on horizontal mounting surface","Size Of Contactor":"S10","Solid Or Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Vacuum contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 480 V rated value":"240 A","at 50 Hz rated value":"220 ... 240 V","at 500 V rated value":"2 A","at 60 Hz rated value":"220 ... 240 V","at 600 V rated value":"242 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","at 1000 V rated value":"355 kW","For Auxiliary Contacts":"18 ... 14","Width Of Connection Bar":"25 mm","For Main Current Circuit":"Connection bar","at 200/208 V rated value":"75 hp","at 220/230 V rated value":"100 hp","at 460/480 V rated value":"200 hp","at 575/600 V rated value":"250 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","Thickness Of Connection Bar":"6 mm","at AC-3 rated value maximum":"1 000 V","at AC in hot operating state":"36 W","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"230 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"05/01/2012","Design Of The Surge Suppressor":"with varistor","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 500 A (690 V, 100 kA), aM: 400 A (690 V, 50 kA), BS88: 450 A (415 V, 50 kA)","Without Load Current Share Typical":"8.2 W","closing power of magnet coil at DC":"700 W","holding power of magnet coil at DC":"8.2 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 500 A (690 V, 100 kA)","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"12 W","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":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes","Type Of Voltage Of The Control Supply Voltage":"AC/DC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"1 000 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"500 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"185 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"2","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bd975b5a9b9307635cda352213015d97.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=73420&mlfb=3RT1265-6AP36"},"ai":{"faq":[{"question":"What is the mechanical life of this vacuum contactor?","answer":"The typical mechanical endurance is 10,000,000 operations, which is standard for the S10 vacuum contactor frame. The vacuum bottle design eliminates contact erosion from arcing, so the mechanical wear of the actuator is the limiting factor, not the main contacts."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1265-6AP36","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/3RT1265-6AP36 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}}