{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1055-6XJ46-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1055-6XJ46-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1055-6XJ46-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1055-6XJ46-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor, 3RT1055-6XJ46-0LA2, S6 size, 72 V DC coil, screw fixing, 172 x 120 x 170 mm.","salesMarkdown":"The 3RT1055-6XJ46-0LA2: At 172 mm high, 120 mm wide, and 170 mm deep, this S6 contactor uses screw fixing — not a DIN-rail clip — so factor in the four 9 mm mounting holes when laying out the backplate. The main power terminals accept solid or stranded wire: two conductors of 0.5–1.5 mm², two of 0.75–2.5 mm², or a maximum of two of 0.75–4 mm². That's standard for this frame size — plan your lugging and ferrule sizes accordingly. ## Auxiliary contact ratings — the real selection detail The auxiliary switch is rated for DC loads, and the numbers drop fast with voltage: 6 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, and 0.9 A at 125 V. ## Switching frequency and duty cycles Maximum switching rates per hour depend on the duty: AC-1 (resistive) at 800, AC-3 (motor start/run) at 750, AC-4 (plugging/inching) at 130, DC-1 at 400, DC-3 and DC-5 at 350. For a conveyor motor running AC-3 duty at 750 ops/hour, that's one cycle every 4.8 seconds — fast enough for most material-handling lines. The AC-4 figure of 130 ops/hour tells you this isn't a reversing starter for high-frequency jogging. ## Environmental range The DC coil's pick-up and drop-out timing is 80–90 ms, with arcing time of 10–15 ms — standard for a contactor this size.","metaTitle":"Siemens SIRIUS 3RT1055-6XJ46-0LA2 Contactor, S6, 172x120x170","metaDescription":"Siemens SIRIUS 3RT1055-6XJ46-0LA2 contactor, S6 size, 172x120x170 mm. DC coil 72 V, auxiliary contacts rated 6 A at 24 V DC. Active production, sourced to order.","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 DC":"80 ... 90 ms","Height":"172 mm","Upwards":"10 mm","Forwards":"20 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"72 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Number Of Holes":"1","Type Of Voltage":"DC","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","at DC-1 maximum":"400 1/h","at DC-3 maximum":"350 1/h","at DC-5 maximum":"350 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-40 ... +70 °C","Fastening Method":"screw fixing","Full-Scale Value":"1.25","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":"Contactor","at 24 V rated value":"6 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 480 V rated value":"156 A","at 500 V rated value":"2 A","at 600 V rated value":"144 A","at 690 V rated value":"55 kW","Design Of The Product":"With extended operating range","Instantaneous Contact":"2","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":"screw-type terminals","at 200/208 V rated value":"50 hp","at 220/230 V rated value":"60 hp","at 460/480 V rated value":"125 hp","at 575/600 V rated value":"150 hp","at AC-2 at AC-3e maximum":"300 1/h","Relative Humidity Minimum":"10 %","at maximum Ith rated value":"95 mm²","Of Main Circuit Rated Value":"8 kV","Thickness Of Connection Bar":"3 mm","at AC-3 rated value maximum":"1 000 V","at maximum AC-1 rated value":"95 mm²","at AC in hot operating state":"27 W","at AC-2 at 400 V rated value":"75 kW","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"132 A","Substance Prohibitance (Date)":"09/06/2016","Design Of The Surge Suppressor":"with varistor","at AWG cables for main contacts":"2x 1/0","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","Product Function Bus 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)","Without Load Current Share Typical":"2.8 W","closing power of magnet coil at DC":"320 W","holding power of magnet coil at DC":"2.8 W","With Type Of Coordination 1 Required":"gG: 355 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":"9 W","number of NC contacts for main contacts":"0","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","voltage at PLC-control input rated value":"24 V","Product Function Short Circuit Protection":"No","mirror contact according to IEC 60947-4-1":"Yes","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"2","Type Of Voltage Of The Control Supply Voltage":"DC","up to 40 °C according to IEC 60077 rated value":"185 A","up to 70 °C according to IEC 60077 rated value":"140 A","Limited To 1 S Switching At Zero Current Maximum":"2 727 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"1 831 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"1 300 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"850 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"703 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)","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=725733&mlfb=3RT1055-6XJ46-0LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1055-6XJ46-0LA2/alternatives.json"},"ai":{"faq":[{"question":"What are the key physical dimensions?","answer":"Height 172 mm, width 120 mm, depth 170 mm. Fastened with screw fixing through 9 mm holes."},{"question":"What wire sizes does the main terminal accept?","answer":"Two conductors of 0.5–1.5 mm², two of 0.75–2.5 mm², or a maximum of two of 0.75–4 mm², solid or stranded."},{"question":"What are the DC auxiliary contact ratings?","answer":"6 A at 24 V DC, 2 A at 48 V and 60 V DC, 1 A at 110 V DC, and 0.9 A at 125 V DC."},{"question":"What is the maximum switching frequency in AC-3 duty?","answer":"750 operations per hour, or roughly one cycle every 4.8 seconds."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1055-6XJ46-0LA2","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/3RT1055-6XJ46-0LA2 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}}