{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2038-1AD04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2038-1AD04","canonicalUrl":"https://aoctrl.com/siemens/3RT2038-1AD04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2038-1AD04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, Size S2 power contactor, 3RT2038-1AD04, 65 A at 480 V AC-3, 15 hp at 230 V, screw-type terminals, snap-on DIN rail.","salesMarkdown":"It carries no built-in auxiliary switch block, so if you need N.O./N.C. feedback for a PLC or status lamp, you add a separate auxiliary contactor block that snaps onto the front. Its headline rating is 65 A at 480 V in AC-3 duty, which is the standard motor-switching category per IEC 60947-4-1 — that means it can make and break a locked-rotor current of about 6× rated, so it handles starting a 65 A FLA motor without welding contacts. At 230 V it carries a 15 hp motor load. The coil is 24 VDC, drawing 6 A at rated voltage. That's a high inrush for a DC coil — verify your 24 VDC supply can deliver the peak without droop, especially if you're driving multiple contactors from the same power supply. The coil holds at 24 VDC nominal; dropout voltage is not listed here, but typical SIRIUS DC coils drop out around 18 V. The Size S2 footprint is 55 mm wide, 114 mm tall, 174 mm deep. Clearance: 10 mm above and below, 10 mm forward, 6 mm to the side. Wire range: accepts 2× (0.5–1.5 mm²) or 2× (0.75–2.5 mm²) solid or stranded. Screw terminals are standard — no spring-cage option on this variant. ## Switching frequency and endurance Maximum switching rates: 700 cycles/hour in AC-1, 500 in AC-3, 350 in AC-2, 150 in AC-4. For AC-3e (enhanced) it's also 500 cycles/hour. If your application cycles faster than these rates, you'll need to derate or move to a larger frame.","metaTitle":"Siemens 3RT2038-1AD04 SIRIUS Power Contactor, 480 V 65 A, Si","metaDescription":"Siemens SIRIUS 3RT2038-1AD04 power contactor, Size S2, rated 65 A at 480 V AC-3, 15 hp at 230 V. Screw terminals, no aux. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"174 mm","Width":"55 mm","at AC":"10 ... 18 ms","Height":"114 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"0.37","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"6 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"700 1/h","at AC-2 maximum":"350 1/h","at AC-3 maximum":"500 1/h","at AC-4 maximum":"150 1/h","lifecycle_stage":"current","Auxiliary Switch":"No","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","at AC-3e maximum":"500 1/h","For Main Contacts":"18 ... 1","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S2","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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":"15 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.6 A","at 480 V rated value":"65 A","at 50 Hz rated value":"42 V","at 500 V rated value":"2 A","at 600 V rated value":"62 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"5 hp","at 200/208 V rated value":"20 hp","at 220/230 V rated value":"25 hp","at 460/480 V rated value":"50 hp","at 575/600 V rated value":"60 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"17.1 W","at AC-2 at 400 V rated value":"37 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"55 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2014","at AWG cables for main contacts":"2x (18 ... 2), 1x (18 ... 1)","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"79.2 A","at AC-5b up to 400 V rated value":"66.4 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 160A (690V,100kA), aM: 80A (690V,100kA), BS88: 125A (415V,80kA)","Without Load Current Share Typical":"16 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 250 A (690 V, 100 kA), aM: 160 A (690 V, 100 kA), BS88: 200 A (415 V, 80 kA)","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"5.7 W","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","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC","Limited To 1 S Switching At Zero Current Maximum":"1 298 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"898 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"640 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"414 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"333 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":"690 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":"690 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":"35 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","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/b18a7bc31d20f116656c67ded8bf6671.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=386923&mlfb=3RT2038-1AD04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2038-1AD04/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of 3RT2038-1AD04?","answer":"Rated 65 A at 480 V in AC-3 motor-switching duty, 15 hp at 230 V. Coil is 24 VDC, 6 A inrush. Mechanical endurance 10 million operations."},{"question":"Where can I buy 3RT2038-1AD04?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will 3RT2038-1AD04 drop into a panel specified around 3RT2016-1AD02?","answer":"The 3RT2038-1AD04 is a Size S2 contactor, while the 3RT2016-1AD02 is a smaller Size S0. The S2 is 55 mm wide versus S0's 45 mm, and the depth is 174 mm versus S0's roughly 107 mm. It will not fit the same DIN-rail footprint without panel rework — the mounting holes and clearance zones differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2038-1AD04","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/3RT2038-1AD04 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}}