{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1056-6XJ46-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1056-6XJ46-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1056-6XJ46-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1056-6XJ46-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1056-6XJ46-0LA2 power contactor, Size S6, 72 VDC coil, screw fixing, 170 mm depth, 120 mm width, 172 mm height.","salesMarkdown":"## SIRIUS S6 power contactor with 72 VDC coil The 3RT1056-6XJ46-0LA2: Its 72 VDC coil voltage matches common DC control bus architectures in process plants and machine tools. The contactor measures 170 mm deep by 120 mm wide by 172 mm high, fitting into standard panel layouts with screw fixing through a single 9 mm mounting hole. ## Duty-cycle ratings and switching frequency Switching frequency varies by duty class: 800 operations per hour maximum in AC-1 (resistive), 750 in AC-3 (motor starting), 300 in AC-2 (slip-ring motor), and 130 in AC-4 (plugging/inching). For DC loads, the maximum is 400 ops/h in DC-1, 350 in DC-3 and DC-5. The AC-3e rating matches the AC-3 figure at 750 ops/h. These timing values matter for coordinating contactor operation with upstream protective devices and safety circuits. ## Auxiliary contacts and termination An auxiliary switch is integrated, with current ratings at various control voltages: 6 A at 24 VDC, 2 A at 48 VDC and 60 VDC, 1 A at 110 VDC, and 0.9 A at 125 VDC. These ratings define the switching capability for status feedback or interlocking circuits. The screw fixing method uses a single 9 mm diameter hole for panel mounting. ## Environmental range and mechanical endurance Typical mechanical endurance is 10 million operations, supporting long service intervals in high-cycle applications. The full-scale value of 1.25 and initial value of 0.7 relate to thermal overload relay settings for motor protection coordination.","metaTitle":"Siemens 3RT1056-6XJ46-0LA2 SIRIUS Power Contactor, Size S6","metaDescription":"Siemens 3RT1056-6XJ46-0LA2 SIRIUS power contactor, Size S6, 72 VDC coil, 170 mm depth, screw fixing. Active production; quoted 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 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":"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":"230 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":"65 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":"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","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":"39 W","at AC-2 at 400 V rated value":"90 kW","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"160 A","voltage at PLC-control input":"24 ... 110 V","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, 100 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)","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 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","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":"215 A","up to 70 °C according to IEC 60077 rated value":"145 A","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)","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=725739&mlfb=3RT1056-6XJ46-0LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1056-6XJ46-0LA2/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum switching frequency for this contactor in AC-3 duty?","answer":"In AC-3 duty (motor starting), the maximum switching frequency is 750 operations per hour. For AC-4 (plugging/inching), it is 130 ops/h."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1056-6XJ46-0LA2","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/3RT1056-6XJ46-0LA2 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}}