{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1054-8AR38-0PR0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1054-8AR38-0PR0","canonicalUrl":"https://aoctrl.com/siemens/3RT1054-8AR38-0PR0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1054-8AR38-0PR0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S6, 3RT1054-8AR38-0PR0, 440-480 VAC 50/60 Hz coil, screw-type terminals, 170 mm depth, 120 mm width, 172 mm height.","salesMarkdown":"The coil is wound for 440-480 VAC at 50/60 Hz, terminated at screw-type terminals — no push-on or spring-cage option on this variant. Rated operating range covered in the spec table. The coil pulls in and drops out within 40 to 60 ms on both AC and DC supplies — consistent timing whether you're driving it from a control transformer or a DC-supplied safety circuit. Switching frequency is duty-class dependent: 1000 operations per hour at AC-3 (motor starting), 800 ops/h at AC-1 (resistive), 400 ops/h at AC-2 (slip-ring motor), and only 130 ops/h at AC-4 (plugging/inching). The AC-3e rating also caps at 1000 ops/h. If your application cycles faster than that, the contactor's electrical life drops off the datasheet curve — oversize to the next frame or add a bypass contactor. Auxiliary contacts are present and rated for switching: 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V. These are the break capacities for the built-in auxiliary switch block — enough for PLC inputs or relay coils, but not for direct motor pilot duty above those currents. Fastened by screw fixing through a single 9 mm hole. Envelope dimensions: 170 mm deep, 120 mm wide, 172 mm high. That 20 mm forward gap is the one most panel layouts miss — skimp on it and you lose access to the coil terminals. Terminal capacity accepts 2 x (0.5 to 1.5 mm²), 2 x (0.75 to 2.5 mm²), or max 2 x (0.75 to 4 mm²) solid or stranded. Strip length and ferrule sizing per the installation instructions — the 4 mm² max per conductor is the binding constraint if you're paralleling feeds. ## Environmental range and lifecycle The storage range exceeds operating — that limit governs handling and shipping, not running. Mechanical life of the contactor is typically 10 million operations. Lifecycle status is current production — this is not a phase-out or NRND line.","metaTitle":"Siemens 3RT1054-8AR38-0PR0 SIRIUS Power Contactor, 440-480 V","metaDescription":"Siemens SIRIUS 3RT1054-8AR38-0PR0 power contactor, size S6, 440-480 VAC 50/60 Hz coil, screw terminals. Rated for 1000 ops/h at AC-3. Current production. Sourced to order against R","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"170 mm","Width":"120 mm","at AC":"40 ... 60 ms","at DC":"40 ... 60 ms","title":"3RT1054-8AR38-0PR0","Height":"172 mm","Upwards":"10 mm","Forwards":"20 mm","at 50 Hz":"0.8","at 60 Hz":"0.8","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"440 ... 480 V","description":"power contactor, AC-3e/AC-3 115 A, 55 kW / 400 V, AC (50-60 Hz) / DC Uc: 440-480 V 3-pole, auxiliary switch right 3RH1921-2DE11 drive: conventional main circuit: box terminal control and auxiliary circuit: screw terminal","Initial Value":"0.8","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":"400 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"130 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw fixing","Full-Scale Value":"1.1","at AC-3e maximum":"1 000 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":"25 hp","at 400 V rated value":"3 A","at 440 V rated value":"1.4 A","at 480 V rated value":"124 A","at 50 Hz rated value":"440 ... 480 V","at 500 V rated value":"2 A","at 60 Hz rated value":"440 ... 480 V","at 600 V rated value":"125 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","at 1000 V rated value":"75 kW","For Auxiliary Contacts":"18 ... 14","Width Of Connection Bar":"17 mm","For Main Current Circuit":"Connection bar","at 200/208 V rated value":"40 hp","at 220/230 V rated value":"50 hp","at 460/480 V rated value":"100 hp","at 575/600 V rated value":"125 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","Safety-Related Switching On":"Yes","Thickness Of Connection Bar":"3 mm","at AC-3 rated value maximum":"1 000 V","at AC in hot operating state":"21 W","at AC-2 at 400 V rated value":"55 kW","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"97 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"03/01/2017","Design Of The Surge Suppressor":"with varistor","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"140 A","at AC-5b up to 400 V rated value":"95 A","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 250 A (690 V, 100 kA), aM: 200 A (690 V, 50 kA), BS88: 250 A (415 V, 50 kA)","Without Load Current Share Typical":"5.2 W","closing power of magnet coil at DC":"360 W","holding power of magnet coil at DC":"5.2 W","At Contactor For Auxiliary Contacts":"Spring-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":"7 W","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"0.25 ... 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","Type Of Voltage Of The Control Supply Voltage":"AC/DC","Limited To 1 S Switching At Zero Current Maximum":"2 565 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"1 654 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"1 170 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"729 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"572 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":"70 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$207.01","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=808505&mlfb=3RT1054-8AR38-0PR0"},"ai":{"faq":[{"question":"What is the coil voltage for 3RT1054-8AR38-0PR0?","answer":"The coil is rated for 440-480 VAC at 50/60 Hz, terminated with screw-type terminals."},{"question":"Where can I buy 3RT1054-8AR38-0PR0?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What switching frequency can this contactor handle?","answer":"Rated at 1000 operations per hour at AC-3 (motor starting), 800 at AC-1 (resistive), 400 at AC-2, and 130 at AC-4 (plugging/inching). The AC-3e rating also caps at 1000 ops/h."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1054-8AR38-0PR0","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/3RT1054-8AR38-0PR0 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}}