{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1075-2NF36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1075-2NF36","canonicalUrl":"https://aoctrl.com/siemens/3RT1075-2NF36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1075-2NF36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S12 power contactor, 3RT1075-2NF36, 96-127 V AC/DC coil, spring-type coil terminals, screw fixing, 225 mm depth.","salesMarkdown":"It carries a 96-127 V AC/DC rated coil and is built for screw-fixing to a mounting plate or panel — not DIN-rail snap-on, so plan for dedicated drilling and clearance. The coil draws its rated voltage across the 96-127 V range, with a pick-up dropout ratio of 0.8 (initial value) and a full-scale factor of 1.1 — meaning the coil reliably holds in at 110% of rated voltage and drops out at 80% of rated value. ## Mounting and integration constraints Fastening is via screw fixing through a single 11 mm hole. The contactor footprint is 160 mm wide, 214 mm high, and 225 mm deep — substantial for a size S12 frame, so verify panel depth before layout. Main power terminals accept stranded conductors from 70 to 240 mm² — rated for heavy motor feeders. Auxiliary switch terminals share the same spring-clamp range. Maximum switching frequency varies by duty class: 700 operations/hour for AC-1 (resistive), 200 for AC-2 (slip-ring motors), 500 for AC-3 and AC-3e (squirrel-cage motors — the common industrial case), and 130 for AC-4 (plugging/inching). For a furnace application with frequent reversing, that AC-4 ceiling of 130 ops/hour is the binding limit. Auxiliary contacts are present (one built-in switch). Rated at 10 A at 24 V, 2 A at 48 V and 60 V, and 1 A at 110 V — sufficient for signaling a PLC input or a control relay coil, but not for direct motor pilot duty above 24 V. Mechanical endurance is typical for the contactor class at 10,000,000 operations — electrical endurance depends on the switched current and duty class, so for high-cycle furnace damper or electrode positioning, factor in contact wear at the AC-3/AC-4 rate.","metaTitle":"Siemens SIRIUS 3RT1075-2NF36 Power Contactor, S12, 96-127VAC","metaDescription":"Siemens SIRIUS 3RT1075-2NF36 power contactor, size S12, 96-127VAC/DC coil, 225mm depth. Active production. Sourced to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"225 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"160 mm","at AC":"80 ... 100 ms","at DC":"80 ... 100 ms","title":"3RT1075-2NF36","Height":"214 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":"96 ... 127 V","description":"power contactor, AC-3e/AC-3 400 A, 200 kW / 400 V AC (50-60 Hz) / DC Uc: 96-127 V PLC input 24 V DC 3-pole, auxiliary contacts 2 NO + 2 NC drive: electronic main circuit: busbar control and auxiliary circuit: spring-loaded terminal","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","Number Of Holes":"1","at AC-1 maximum":"700 1/h","at AC-2 maximum":"200 1/h","at AC-3 maximum":"500 1/h","at AC-4 maximum":"130 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":"500 1/h","Diameter Of Holes":"11 mm","Mounting Position":"with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back","Size Of Contactor":"S12","Solid Or Stranded":"2x (0,25 ... 2,5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Power 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 440 V rated value":"1.4 A","at 480 V rated value":"361 A","at 50 Hz rated value":"96 ... 127 V","at 500 V rated value":"2 A","at 60 Hz rated value":"96 ... 127 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":"250 kW","For Auxiliary Contacts":"24 ... 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":"105 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","at AC-5a up to 690 V rated value":"378 A","at AC-5b up to 400 V rated value":"332 A","For Auxiliary And Control Circuit":"spring-loaded 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":"3.6 W","closing power of magnet coil at DC":"800 W","holding power of magnet coil at DC":"3.6 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 630 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"35 W","for AWG cables for auxiliary contacts":"2x (24 ... 14)","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 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","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type Of Voltage Of The Control Supply Voltage":"AC/DC","Limited To 1 S Switching At Zero Current Maximum":"6 600 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"5 761 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"4 143 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"2 635 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"2 088 A; Use minimum cross-section acc. to AC-1 rated value","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":"300 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/ffed5295027057ada0f2a2f6ffc34778.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=34797&mlfb=3RT1075-2NF36"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"Width 160 mm, height 214 mm, depth 225 mm. Mounting via a single 11 mm screw hole. Clearances: 10 mm up/down/side, 20 mm forward."},{"question":"What coil voltage does this contactor use?","answer":"Rated coil voltage is 96-127 V AC/DC. Pick-up dropout ratio is 0.8; full-scale factor 1.1. Switching time 80-100 ms AC and DC."},{"question":"What wire sizes does the main power terminal accept?","answer":"Stranded conductors from 70 to 240 mm². Coil and auxiliary terminals accept 2x (0.25-2.5 mm²) solid or stranded via spring-clamp."},{"question":"What is the maximum switching frequency for motor duty (AC-3)?","answer":"500 operations per hour for AC-3 and AC-3e duty. AC-4 (plugging/inching) is limited to 130 ops/hour."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1075-2NF36","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/3RT1075-2NF36 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}}