{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1075-6AD36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1075-6AD36","canonicalUrl":"https://aoctrl.com/siemens/3RT1075-6AD36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1075-6AD36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1075-6AD36 power contactor, Size S12, 42-48 V AC/DC coil, screw-type terminals, auxiliary switch, screw fixing.","salesMarkdown":"## SIRIUS S12 — what the frame size means for your panel The 3RT1075-6AD36 is a Size S12 power contactor in the Siemens SIRIUS family, designed for screw fixing to a mounting surface — not DIN-rail snap-on, so budget the panel backplate for four M8 bolts through 11 mm holes on a 160 mm wide footprint. Mounting position is flexible: vertical surface with ±90° rotation and ±22.5° tilt front-to-back, which helps when the gland plate or busbar layout forces an odd orientation. Clearance distances are tight — 10 mm upwards, 10 mm downwards, 10 mm at the side, 20 mm forwards — so you can pack contactors closer than many IEC designs allow, but the arc chute needs that forward gap for arc extinction (arcing time 10–15 ms). ## Coil and auxiliary contact ratings — the switching limits Coil voltage is 42–48 V AC/DC, with a pickup threshold of 0.8× rated value — meaning the contactor pulls in at about 34 V on a 42 V rail, which gives some headroom on a sagging control supply. The magnet coil terminates at screw-type terminals, and the built-in auxiliary switch is rated 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V — enough to drive a PLC input or a small relay directly without an interposing block. Operating time is 60–100 ms on both AC and DC, consistent across the voltage range, so timing coordination with upstream breakers or soft-starters is predictable. ## Switching frequency and mechanical endurance — duty-cycle reality Maximum switching rates vary by duty: 700 operations/hour in AC-1 (resistive), 500/h in AC-3 (motor start/run), 200/h in AC-2 (slip-ring motor), and 130/h in AC-4 (plugging/inching). The AC-3e rating matches AC-3 at 500/h. Mechanical life is 10 million operations typical — that is the contactor body, not the contacts. In a high-cycle application like a conveyor jog station, the electrical wear in AC-4 will limit service life well before the mechanism wears out. The overload factor is 1.1× full-scale, so the contactor can sustain 110 % rated current briefly without welding — useful for motor inrush coordination. ## Wire terminations and thermal limits Main power circuit accepts stranded wire from 70 to 240 mm² — that is a heavy cable range, typical for a Size S12 contactor handling 250+ A motor loads. The control circuit (auxiliary) takes solid or stranded 2× (0.5–1.5 mm²), 2× (0.75–2.5 mm²), or max 2× (0.75–4 mm²). Operating ambient is –25 to +60 °C, storage –55 to +80 °C — the contactor lives in a warm panel but can sit in a cold warehouse without damage. Power factor rating is 0.9 at both 50 Hz and 60 Hz, so the contactor is equally at home on 50 Hz or 60 Hz networks without derating.","metaTitle":"Siemens 3RT1075-6AD36 SIRIUS Power Contactor, Size S12","metaDescription":"Siemens 3RT1075-6AD36 SIRIUS power contactor, Size S12, 42-48 V coil, screw terminals, auxiliary switch included. Current production. 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":"3RT1075-6AD36","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":"42 ... 48 V","description":"power contactor, AC-3e/AC-3 400 A, 200 kW / 400 V AC (50-60 Hz) / DC Uc: 42-48 V 3-pole, auxiliary contacts 2 NO + 2 NC drive: conventional 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":"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 (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 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":"42 ... 48 V","at 500 V rated value":"2 A","at 60 Hz rated value":"42 ... 48 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":"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":"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":"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":"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: 630 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":"35 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","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","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":"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/a869e2f84290422253ba075de1695939.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=197504&mlfb=3RT1075-6AD36"},"ai":{"faq":[{"question":"What wire sizes does the 3RT1075-6AD36 accept on the main power circuit?","answer":"The main power terminals accept stranded wire from 70 mm² up to 240 mm². The auxiliary control circuit accepts solid or stranded wire in combinations: 2× (0.5–1.5 mm²), 2× (0.75–2.5 mm²), or max 2× (0.75–4 mm²)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1075-6AD36","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/3RT1075-6AD36 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}}