{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1056-6LA06","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1056-6LA06","canonicalUrl":"https://aoctrl.com/siemens/3RT1056-6LA06","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1056-6LA06","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, 3RT1056-6LA06, size S6, screw fixing, 172 x 120 x 170 mm.","salesMarkdown":"It is screw-fixed to a mounting surface, with a vertical mounting surface that can be rotated ±90° or tilted ±22.5° forward and back, giving flexibility in enclosure layout. The contactor carries an auxiliary switch and the coil terminates on screw-type terminals. The AC-3 switching frequency is rated at 750 operations per hour (AC-3e same), which governs typical motor start-stop cycles; AC-4 (plugging/reversing) drops to 130 operations per hour. For resistive loads (AC-1) the contactor manages 800 operations per hour. These figures define the thermal duty cycle — exceeding them risks contact welding or premature wear. The mechanical endurance is 10,000,000 operations typical, so the limiting factor in most applications will be electrical life under load, not the mechanism. The main power circuit accepts stranded cable from 25 to 120 mm², sized for the S6 frame's current-carrying capacity. Auxiliary and control wiring uses solid or stranded conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²). The auxiliary contact ratings are given per voltage — at 24 V it carries 10 A, at 230 V it carries 0.3 A — so confirm the control voltage and load current against these values for the specific aux contact being used. These are consistent with a contactor of this size and class; they matter for coordination with upstream short-circuit protection devices. The contactor measures 172 mm high, 120 mm wide, and 170 mm deep. It is fastened with a single 9 mm diameter hole. These are minimum air gaps to maintain rated insulation and thermal dissipation — plan the enclosure layout accordingly, especially when grouping multiple contactors. The storage figure covers handling and warehousing, not running conditions. If the panel ambient exceeds 60 °C, derating or forced ventilation is required.","metaTitle":"Siemens 3RT1056-6LA06 SIRIUS S6 Power Contactor, 170 mm dept","metaDescription":"Siemens SIRIUS 3RT1056-6LA06 power contactor, size S6, screw fixing, 172x120x170 mm. Current production. Rated for motor loads up to 30 hp at 230 V. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"170 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"120 mm","at AC":"40 ... 60 ms","at DC":"40 ... 60 ms","Height":"172 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"25 ... 120 mm²","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","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":"130 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw fixing","at AC-3e maximum":"750 1/h","Diameter Of Holes":"9 mm","Mounting Position":"with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back","Size Of Contactor":"S6","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":"30 hp","at 400 V rated value":"3 A","at 440 V rated value":"1.4 A","at 480 V rated value":"180 A","at 500 V rated value":"2 A","at 600 V rated value":"192 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","at 1000 V rated value":"90 kW","For Auxiliary Contacts":"18 ... 14","Width Of Connection Bar":"17 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":"3 mm","at AC-3 rated value maximum":"1 000 V","at AC in hot operating state":"39 W","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"160 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":"189 A","at AC-5b up to 400 V rated value":"153 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 315 A (690 V, 100 kA), aM: 200 A (690 V, 50 kA), BS88: 315 A (415 V, 50 kA)","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 355 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"13 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","Limited To 1 S Switching At Zero Current Maximum":"2 900 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"2 084 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"1 480 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"968 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"801 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":"95 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/48191814343ef1de12d436857500061f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=465606&mlfb=3RT1056-6LA06","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1056-6LA06/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"The contactor is 172 mm high, 120 mm wide, and 170 mm deep. It requires a single 9 mm mounting hole and minimum clearances of 10 mm upwards, 10 mm downwards, 20 mm forwards, and 10 mm at the sides."},{"question":"What wire sizes does the main power circuit accept?","answer":"The main power terminals accept stranded cable from 25 mm² up to 120 mm². Auxiliary and control terminals accept solid or stranded conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²)."},{"question":"What is the switching frequency for motor duty?","answer":"For AC-3 duty (starting/running motors), the maximum is 750 operations per hour. For AC-4 duty (plugging/reversing), it is 130 operations per hour. For resistive loads (AC-1), it is 800 operations per hour."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1056-6LA06","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/3RT1056-6LA06 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}}