{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1076-6LA06","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1076-6LA06","canonicalUrl":"https://aoctrl.com/siemens/3RT1076-6LA06","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1076-6LA06","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1076-6LA06, Size S12, screw fixing, 225 mm depth × 160 mm width × 214 mm height, 70–240 mm² stranded power cable range.","salesMarkdown":"Power cable termination accepts stranded conductors from 70 mm² up to 240 mm², so this contactor lands in the heavy end of the SIRIUS range — think large pumps, compressors, or conveyor drives drawing several hundred amps. The auxiliary contact block is screw-type, and the contactor ships with one auxiliary switch built in. Auxiliary contact ratings cover 24 VDC at 10 A down to 440 VAC at 1.4 A — enough for most PLC input or relay interlock circuits. ## Clearance and integration That 20 mm forward clearance is the one that catches panel builders — the arcing chamber needs room, and the depth of 225 mm already pushes into the enclosure. Plan your backpanel depth accordingly. Mounting uses a single 11 mm hole — screw fixing, not DIN rail. The Size S12 frame is too large for a snap-on rail; expect to bolt it directly to the mounting plate. Auxiliary terminal wiring accepts 2x (0.5–1.5 mm²) solid or 2x (0.75–2.5 mm²) stranded, max 2x (0.75–4 mm²). Standard spring-cage or screw-clamp range for control wiring. ## Switching performance and life Switching frequency varies by duty: 500 cycles/hour in AC-1 (resistive), 420 in AC-3 or AC-3e (standard motor starting), 170 in AC-2 (slip-ring motor), and 130 in AC-4 (plugging/inching). For a high-cycle conveyor or frequent reversing application, the AC-4 limit of 130 ops/hour is the binding constraint. Operating times: 60–100 ms at both AC and DC coil supply. That puts the total break time around 70–115 ms — fast enough for most motor protection coordination schemes, but verify selectivity with upstream breaker curves if the fault current is high. ## Environmental limits The storage limit is wider because the contactor is not dissipating heat; the operating limit governs the panel ambient. If your enclosure hits 60 °C internally, this contactor still switches — but derate the continuous current per Siemens' thermal curve.","metaTitle":"Siemens 3RT1076-6LA06 SIRIUS Power Contactor, Size S12, 225","metaDescription":"Siemens 3RT1076-6LA06 SIRIUS power contactor, Size S12, 225 mm depth, 160 mm width, 214 mm height. Screw fixing, 70–240 mm² power cable. Current production. Available 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":"3RT1076-6LA06","Height":"214 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"70 ... 240 mm²","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","description":"power contactor, AC-3e/AC-3 500 A, 250 kW / 400 V without operating mechanism 3-pole, auxiliary contacts 2 NO + 2 NC main circuit: busbar control and auxiliary circuit: screw terminal","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Number Of Holes":"1","at AC-1 maximum":"500 1/h","at AC-2 maximum":"170 1/h","at AC-3 maximum":"420 1/h","at AC-4 maximum":"130 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw fixing","at AC-3e maximum":"420 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":"477 A","at 500 V rated value":"2 A","at 600 V rated value":"472 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":"150 hp","at 220/230 V rated value":"200 hp","at 460/480 V rated value":"400 hp","at 575/600 V rated value":"500 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":"165 W","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"430 A","safety-related switching OFF":"No","Substance Prohibitance (Date)":"05/01/2012","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"536 A","at AC-5b up to 400 V rated value":"415 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: 500 A (690 V, 50 kA), BS88: 500 A (415 V, 50 kA)","At Contactor For Auxiliary Contacts":"Screw-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":"55 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","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":"7 484 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"7 484 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"5 978 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"3 765 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"2 887 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":"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/bf93832ab86bf051f9e3ad5e140cdb9c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=164945&mlfb=3RT1076-6LA06"},"ai":{"faq":[{"question":"What is the depth of the 3RT1076-6LA06?","answer":"The depth is 225 mm. Combined with the 20 mm forward clearance requirement, the total depth needed behind the panel door is 245 mm minimum."},{"question":"What wire sizes does the auxiliary terminal accept?","answer":"The auxiliary screw-type terminals accept 2x (0.5–1.5 mm²) solid, 2x (0.75–2.5 mm²) stranded, and max 2x (0.75–4 mm²)."},{"question":"Will the 3RT1076-6LA06 drop into a panel specified for the 3RT1266-6AP36-0KA1?","answer":"Both are Size S12 SIRIUS contactors with screw fixing, so the mounting hole pattern and overall envelope are the same. The 3RT1076-6LA06 uses a standard screw-type coil terminal, while the 3RT1266-6AP36-0KA1 includes a surge suppressor and special coil variant — verify the coil voltage and auxiliary wiring before assuming a direct swap."},{"question":"Where can I buy the 3RT1076-6LA06?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1076-6LA06","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/3RT1076-6LA06 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}}