{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1275-6AB36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1275-6AB36","canonicalUrl":"https://aoctrl.com/siemens/3RT1275-6AB36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1275-6AB36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1275-6AB36 vacuum contactor, Size S12, screw fixing, 225 mm depth, 160 mm width, 214 mm height, screw-type coil terminals, 23-26 V rated control supply.","salesMarkdown":"## Vacuum switching for high-cycle motor duty The 3RT1275-6AB36 is a SIRIUS vacuum contactor in the Size S12 frame, designed for applications where high switching frequency and long mechanical life are critical — think conveyor systems, pump cycling, or compressor control that runs thousands of operations per hour. Rated for 750 AC-3 cycles per hour maximum and 700 AC-1 cycles per hour, with a typical mechanical life of 10,000,000 operations. The vacuum arc-quenching chamber keeps contact erosion low, so the switching rate doesn't eat into service life the way an air-break contactor would. ## Panel fit and clearance zones Mounts via screw fixing (two 11 mm holes) with dimensions 225 mm deep, 160 mm wide, 214 mm tall. These are the minimum air gaps to adjacent metalwork — ignore them and the arc flash can track to ground during a fault interruption. ## Control circuit and auxiliary contacts Coil terminals are screw-type, rated for 23-26 V control supply with a pickup factor of 1.1x rated and a dropout threshold of 0.8x rated. AC and DC dropout times both fall in the 60-100 ms range, with arcing time 10-15 ms — this matters when coordinating with upstream protection devices that need to ride through the contactor's opening arc. That covers most PLC input circuits and control relays in the panel. The auxiliary contacts are wired separately from the main power path, so the feedback signal stays clean even when the main contacts are switching motor inrush.","metaTitle":"Siemens 3RT1275-6AB36 SIRIUS Vacuum Contactor, Size S12","metaDescription":"Siemens SIRIUS vacuum contactor 3RT1275-6AB36, Size S12, 225 mm depth, 750 AC-3 cycles/h, 10M mechanical life. Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"225 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"160 mm","at AC":"60 ... 100 ms","at DC":"60 ... 100 ms","title":"3RT1275-6AB36","Height":"214 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":"23 ... 26 V","description":"vacuum contactor AC-3e/AC-3 400 A, 200 kW / 400 V, 3-pole, Uc: 23-26 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":"700 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":"S12","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":"361 A","at 50 Hz rated value":"23 ... 26 V","at 500 V rated value":"2 A","at 60 Hz rated value":"23 ... 26 V","at 600 V rated value":"382 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","at 1000 V rated value":"560 kW","For Auxiliary Contacts":"18 ... 14","Width Of Connection Bar":"25 mm","For Main Current Circuit":"Connection bar","at 200/208 V rated value":"125 hp","at 220/230 V rated value":"150 hp","at 460/480 V rated value":"300 hp","at 575/600 V rated value":"400 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":"63 W","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"350 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: 800 A (690 V, 50 kA), aM: 630 A (690 V, 50 kA), BS88: 800 A (415 V, 50 kA)","Without Load Current Share Typical":"10 W","closing power of magnet coil at DC":"920 W","holding power of magnet coil at DC":"10 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 800 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":"21 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":"370 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/bbd628c7456eb361c29b1fa800971aa4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=347974&mlfb=3RT1275-6AB36"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT1275-6AB36?","answer":"Submit an RFQ with your target quantity. Pricing and lead time are confirmed at quote time through our sourcing network. No stock-holding claim is made here; availability varies by lot and is verified per request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1275-6AB36","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/3RT1275-6AB36 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}}