{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1264-6NB36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1264-6NB36","canonicalUrl":"https://aoctrl.com/siemens/3RT1264-6NB36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1264-6NB36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S10 vacuum contactor, 3RT1264-6NB36, 70-240 mm² power circuit, 21-27.3 VDC coil, screw-type terminals, 206 mm depth.","salesMarkdown":"## SIRIUS S10 Vacuum Contactor — 3RT1264-6NB36 Vacuum contactors are the standard choice for applications requiring frequent switching under load — the arc extinguishes in a sealed vacuum bottle, so contact wear is minimal and the switching chamber stays clean across millions of operations. Rated for power conductors from 70 mm² up to 240 mm² stranded, this contactor handles the main circuit of large motors, transformers, or resistive loads. The coil is rated for a 21-27.3 VDC control voltage, with a 1.1x full-scale pickup factor and a dropout threshold around 0.8x nominal — typical for Siemens DC-operated contactors. Mechanical life is listed at 10 million operations typical, and the contactor supports switching frequencies up to 800 cycles per hour in AC-1 duty (resistive), 750 in AC-3 (squirrel-cage motor starting), and 250 in AC-4 (plugging/reversing). The vacuum bottle keeps arcing time to 10-15 ms, which helps with contactor coordination in motor control centers. The 3RT1264-6NB36 measures 210 mm high, 145 mm wide, and 206 mm deep. It mounts via screw fixing through four 11 mm holes on a 1-hole pattern per pole. The coil has screw-type terminals accepting 2x (0.5-1.5 mm²) solid/stranded, 2x (0.75-2.5 mm²), or max 2x (0.75-4 mm²). The main power circuit uses the larger 70-240 mm² stranded connection. An auxiliary switch block is included, with rated currents of 10 A at 24 V, 2 A at 48 V and 60 V, and 1 A at 110 V — sufficient for signaling back to a PLC or control relay.","metaTitle":"Siemens 3RT1264-6NB36 SIRIUS Vacuum Contactor, S10 Frame, 70","metaDescription":"Siemens 3RT1264-6NB36 SIRIUS vacuum contactor, S10 frame. Rated for 70-240 mm² power conductors, 21-27.3 VDC coil. Currently in production. Sourced to order against RFQ.","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":"80 ... 100 ms","at DC":"80 ... 100 ms","Height":"210 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"70 ... 240 mm²","at 50 Hz":"0.4","at 60 Hz":"0.4","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"21 ... 27.3 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Number Of Holes":"1","at AC-1 maximum":"800 1/h","at AC-2 maximum":"300 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":"180 A","at 50 Hz rated value":"21 ... 27.3 V","at 500 V rated value":"2 A","at 60 Hz rated value":"21 ... 27.3 V","at 600 V rated value":"192 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","at 1000 V rated value":"315 kW","For Auxiliary Contacts":"18 ... 14","Width Of Connection Bar":"25 mm","For Main Current Circuit":"Connection bar","at 200/208 V rated value":"60 hp","at 220/230 V rated value":"75 hp","at 460/480 V rated value":"150 hp","at 575/600 V rated value":"200 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":"27 W","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"195 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":"3.4 W","closing power of magnet coil at DC":"630 W","holding power of magnet coil at DC":"3.4 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 500 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"9 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","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","voltage at PLC-control input rated value":"24 V","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","type of PLC-control input according to IEC 60947-1":"Type 2","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","operating range factor of the voltage at PLC-control input":"0.8 ... 1.1","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/05bcfc3864145d0be67db76b1fd03035.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=492177&mlfb=3RT1264-6NB36","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1264-6NB36/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 3RT1264-6NB36?","answer":"The peer MPN 3RT1264-6AP36-0KA1 is the closest functional equivalent within the same S10 frame size and vacuum contactor class. Both share the S10 frame and similar power handling, but the coil voltage and auxiliary configuration differ — verify the control circuit voltage before substituting."},{"question":"What are the key dimensions of 3RT1264-6NB36?","answer":"The contactor measures 210 mm height, 145 mm width, and 206 mm depth. Mounting requires four 11 mm holes with clearance of 10 mm upwards, 10 mm downwards, 10 mm at the sides, and 20 mm forwards."},{"question":"What compliance documentation is available for 3RT1264-6NB36?","answer":"As a Siemens SIRIUS product, this contactor is manufactured to IEC and UL standards. The vacuum contactor design inherently meets RoHS and REACH requirements for restricted substances. Specific declaration documents are available upon request with an RFQ."},{"question":"Where can I buy 3RT1264-6NB36 and how is it quoted?","answer":"We source and quote 3RT1264-6NB36 to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time for your required quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1264-6NB36","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/3RT1264-6NB36 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}}