{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1055-6XB46-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1055-6XB46-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1055-6XB46-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1055-6XB46-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1055-6XB46-0LA2, size S6, 24 V DC coil, screw fixing, 170 mm depth, 120 mm width, 172 mm height.","salesMarkdown":"It carries a 24 V DC coil, screw-fixing mounting, and an integrated auxiliary switch block. The 24 V DC coil picks up at 70% of rated voltage (about 16.8 V) and drops out at 125% (30 V), so it holds in during a sag but releases cleanly on overvoltage. The auxiliary contacts handle 6 A at 24 V DC, derating to 0.9 A at 125 V DC — enough for PLC inputs or relay coils on the same control voltage. ## Switching frequency by duty class Maximum switching rates are duty-dependent: 800 ops/h in AC-1 (resistive), 750 ops/h in AC-3 and AC-3e (standard motor starting), 300 ops/h in AC-2 (slip-ring motors), and 130 ops/h in AC-4 (plugging/inching). For DC loads: 400 ops/h in DC-1, 350 ops/h in DC-3 and DC-5. Mounts via screw fixing with a single 9 mm hole. The enclosure needs 10 mm clearance upwards, downwards, and to the sides, plus 20 mm forwards for arc venting. Dimensions are 172 mm high, 120 mm wide, 170 mm deep — size S6 frame. Wire 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).","metaTitle":"Siemens 3RT1055-6XB46-0LA2 SIRIUS Power Contactor, 24 V DC,","metaDescription":"Siemens SIRIUS 3RT1055-6XB46-0LA2 power contactor, 24 V DC coil, size S6, 170 mm depth. Sourced to order against RFQ. Current lifecycle stage confirmed.","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":"24 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":"Power 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 440 V rated value":"1.4 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","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=725731&mlfb=3RT1055-6XB46-0LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1055-6XB46-0LA2/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1055-6XB46-0LA2 and get current pricing?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"What are the key dimensions of 3RT1055-6XB46-0LA2?","answer":"The contactor measures 172 mm high, 120 mm wide, and 170 mm deep — size S6 frame. Clearance requirements are 10 mm up/down/sides and 20 mm forward for arc venting."},{"question":"What wire sizes does the 3RT1055-6XB46-0LA2 accept?","answer":"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":"How does this compare to the 3RT1055-1AB36?","answer":"The 3RT1055-1AB36 is a different coil voltage variant within the same SIRIUS S6 frame. The 3RT1055-6XB46-0LA2 carries a 24 V DC coil, while the -1AB36 uses a different coil voltage. Both share the same mechanical dimensions, mounting pattern, and auxiliary contact options — so one can replace the other in the same panel without rewiring the main power circuit, provided the coil supply is changed to match."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1055-6XB46-0LA2","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/3RT1055-6XB46-0LA2 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}}