{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1056-2XF46-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1056-2XF46-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1056-2XF46-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1056-2XF46-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1056-2XF46-0LA2 contactor, S6 frame size, 110 VDC coil, screw fixing, 170 mm depth, 120 mm width, 172 mm height.","salesMarkdown":"The 3RT1056-2XF46-0LA2 is a Siemens SIRIUS contactor in the S6 frame size, meaning it's built for higher-current motor switching in a compact footprint — the S6 frame typically handles currents in the 150–300 A range at 400 V AC-3, though the exact rating depends on the coil variant and duty cycle. The 110 VDC coil pulls in with a 0.7 initial value factor — that's the minimum voltage at which the magnet system reliably closes, so if your DC bus sags below ~77 V during startup, this contactor may chatter or fail to pull in. Screw fixing means it bolts directly to a mounting plate — no DIN rail adapter. ## Physical envelope and clearance The body measures 170 mm deep, 120 mm wide, 172 mm high — that's a substantial cube, so check your gland plate clearance and door swing before committing the panel layout. The forward clearance is the tightest — 20 mm means the arc chute needs breathing room, not just wire bending space. Mounting holes: one hole per fixing point, 9 mm diameter — M8 bolts fit directly. ## Switching frequency by duty class Maximum switching rates vary significantly by duty: AC-1 (resistive) allows 800 operations/hour, AC-3 (squirrel-cage motor start/run) allows 750 ops/h, AC-4 (plugging/inching) drops to 130 ops/h. For DC loads: DC-1 allows 400 ops/h, DC-3 and DC-5 both allow 350 ops/h. In a 110 VDC circuit with inductive load, that arc time determines the contact erosion rate and the minimum load current for reliable arc transfer. Mechanical endurance is 10 million operations typical — that's the unloaded life; electrical life under full load will be lower, governed by the switching frequency and the make/break current. ## Auxiliary contact capacity and wire range The contactor includes an auxiliary switch block. These are the DC-13 switching ratings — inductive load, so derate further for solenoid or relay coils. ## Temperature limits and storage Operating ambient: -40 to +70 °C — that covers most outdoor cabinet installations in temperate climates. Sourced to order against the BOM quantity through independent distribution.","metaTitle":"Siemens 3RT1056-2XF46-0LA2 SIRIUS Contactor, S6 Frame","metaDescription":"Siemens SIRIUS contactor 3RT1056-2XF46-0LA2, S6 frame size, 110 VDC coil, screw fixing. Active production. 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 (0.25 ... 2.5 mm²)","Width":"120 mm","at DC":"80 ... 90 ms","title":"3RT1056-2XF46-0LA2","Height":"172 mm","Upwards":"10 mm","Forwards":"20 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"110 V","description":"power contactor, AC-3e/AC-3 185 A, 90 kW / 400 V Uc: 110 V DC x (0.7-1.25) PLC input 24-110 V DC 3-pole, auxiliary contacts 2 NO + 2 NC drive: electronic main circuit: busbar control and auxiliary circuit: spring-loaded terminal extended rated condition railroad IEC 60077","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 (0,25 ... 2,5 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":"230 hp","at 400 V rated value":"3 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":"24 ... 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","Substance Prohibitance (Date)":"09/06/2016","Design Of The Surge Suppressor":"with varistor","at AWG cables for main contacts":"4 ... 250 kcmil","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"spring-loaded 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)","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"13 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 (0.25 ... 1.5 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","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","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,"stockQuantity":0,"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=725735&mlfb=3RT1056-2XF46-0LA2"},"ai":{"faq":[{"question":"What is the depth of 3RT1056-2XF46-0LA2?","answer":"The depth is 170 mm. Combined with the 120 mm width and 172 mm height, the contactor occupies a 170 × 120 × 172 mm envelope. Minimum forward clearance is 20 mm for arc chute ventilation."},{"question":"What wire sizes does the auxiliary contact accept?","answer":"This is for the control circuit only — the main power path uses separate bus connections on the S6 frame."},{"question":"Will 3RT1056-2XF46-0LA2 drop into a panel specified around 6ES7517-3FP00-0AB0?","answer":"No — the 6ES7517-3FP00-0AB0 is a Siemens PLC module (S7-1500), not a contactor. They are completely different device classes with different mounting, wiring, and function. No direct interchange exists."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1056-2XF46-0LA2","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/3RT1056-2XF46-0LA2 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}}