{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2038-3AL20-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2038-3AL20-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RT2038-3AL20-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2038-3AL20-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, Size S2 power contactor, 3RT2038-3AL20-ZW97, 65 A at 480 V, 230 V 50 Hz coil, spring-type terminals, screw and snap-on DIN rail mounting, current lifecycle.","salesMarkdown":"## SIRIUS Size S2 Power Contactor — 65 A at 480 V The Siemens SIRIUS 3RT2038-3AL20-ZW97 is a Size S2 power contactor rated 65 A at 480 V, meaning it handles motor loads up to 65 A in AC-3 duty — the standard induction-motor switching category — without derating at that voltage. The 230 V 50 Hz coil pulls 0.36 VA at 50 Hz and 0.39 VA at 60 Hz, a light control-circuit load that leaves headroom on a 24 VDC or 230 VAC transformer. Spring-type terminals on the coil speed wiring: no screwdriver needed for the control wires. The main contact configuration is 18 N/O and 1 N/C, giving you 18 normally-open power poles and one normally-closed auxiliary — enough to switch a three-phase motor plus a holding circuit without an add-on block. Side clearance is only 6 mm; upward, downward, and forward clearances are 10 mm each. ## Duty Ratings and Mechanical Life The 3RT2038-3AL20-ZW97 carries separate maximum operating rates per duty class: 700 operations/hour in AC-1 (resistive loads), 500 ops/h in AC-3 (squirrel-cage motors, starting and running), and 150 ops/h in AC-4 (plugging, inching, reversing). AC-3e, the energy-efficient motor variant, also maxes at 500 ops/h. These aren't continuous ratings — they're the maximum switching frequency the contactor can sustain without exceeding thermal limits. For a conveyor running one start/stop per minute, AC-3 at 60 ops/h is well within the 500 ops/h ceiling; a reversing application at 2 reversals per minute hits 120 ops/h and stays under the AC-4 limit of 150 ops/h. Mechanical life is 10 million cycles typical, so the contactor outlasts most panel designs. ## Auxiliary Contact Ratings and Wiring The built-in auxiliary switch is rated across multiple voltage levels: 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, and 3 A at 400 V (-). At 230 V the auxiliary carries 15 hp — a motor-starting rating, not a continuous thermal current. The wire range for the main and auxiliary terminals is 2x 0.5 to 2.5 mm² solid or stranded. That's a standard 1.5 mm² or 2.5 mm² control wire; no ferrule needed for the spring-type coil terminals. Arcing time spans 10 to 20 ms, and the contactor operates across -25 to +60 °C ambient, with storage from -55 to +80 °C.","metaTitle":"3RT2038-3AL20-ZW97 SIRIUS Power Contactor, 65 A at 480 V, Si","metaDescription":"Siemens SIRIUS 3RT2038-3AL20-ZW97 power contactor, 65 A at 480 V, Size S2, 230 V 50 Hz coil, screw and snap-on DIN rail mounting. Current lifecycle stage. Available to order agains","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"130 mm","Width":"55 mm","at AC":"10 ... 18 ms","Height":"114 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"0.36","at 60 Hz":"0.39","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"6 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-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":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN 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 ... 2.5 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":"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":"230 V","at 500 V rated value":"2 A","at 60 Hz rated value":"230 V","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","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":"spring-loaded 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":"17.2 W","At Contactor For Auxiliary Contacts":"Spring-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)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"5.7 W","for AWG cables for auxiliary contacts":"2x (20 ... 14)","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)","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 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","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 / P600","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":"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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8e1a3fcd2714b39ea1ee838ac0b09711.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=64019&mlfb=3RT2038-3AL20-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2038-3AL20-ZW97/alternatives.json"},"ai":{"faq":[{"question":"What is 3RT2038-3AL20-ZW97's listed depth and width?","answer":"The depth is 130 mm and the width is 55 mm, fitting a standard 55 mm DIN-rail slot with 6 mm side clearance."},{"question":"How do I get current pricing and availability for 3RT2038-3AL20-ZW97?","answer":"Submit an RFQ through this listing; pricing and stock levels are confirmed at quote time through independent distribution channels."},{"question":"What is the coil voltage and power draw on 3RT2038-3AL20-ZW97?","answer":"The coil is rated 230 V at 50 Hz, drawing 0.36 VA at 50 Hz and 0.39 VA at 60 Hz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2038-3AL20-ZW97","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/3RT2038-3AL20-ZW97 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}}