{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2037-1AH24","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2037-1AH24","canonicalUrl":"https://aoctrl.com/siemens/3RT2037-1AH24","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2037-1AH24","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S2 power contactor, 3RT2037-1AH24, screw and snap-on 35 mm DIN rail, 65 A at 480 V, 55 mm wide.","salesMarkdown":"## SIRIUS S2 power contactor — 3RT2037-1AH24 It carries a 65 A rating at 480 V — the headline motor current figure that governs most selection decisions for this frame. Dimensions are 174 mm deep, 55 mm wide, and 114 mm tall, fitting into standard panel layouts with the S2 footprint. ## Duty ratings and switching performance Switching rates vary by duty class: AC-1 (resistive) at 800 operations/hour max, AC-3 (motor start/run) at 700 ops/h, AC-2 at 400 ops/h, and AC-4 (plugging/inching) at 200 ops/h. The AC-3e rating also sits at 700 ops/h. These limits define the thermal cycling the contactor can sustain without accelerated wear. Arcing time spans 10 to 20 ms; operate time (AC) is 10 to 18 ms. The main contact configuration is 18 normally open contacts, 1 normally closed — typical for a three-pole power contactor with an auxiliary N/C. Coil termination uses screw-type terminals. The magnet coil connection accepts 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded wire. The contactor is rated for a typical mechanical life of 10,000,000 operations. ## Auxiliary contact and voltage ratings This variant ships without an auxiliary switch block — the auxiliary switch field is marked 'No'. If your circuit requires early-make or late-break aux contacts, they must be added as separate modules. Auxiliary contact current ratings at various control voltages: 6 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, 3 A at 400 V, 0.6 A at 440 V. At 50 Hz the rated control supply voltage is 48 V.","metaTitle":"Siemens 3RT2037-1AH24 SIRIUS Power Contactor, 65 A at 480 V,","metaDescription":"Siemens 3RT2037-1AH24 SIRIUS power contactor, size S2. Rated 65 A at 480 V, screw/snap-on 35 mm DIN rail. Current lifecycle stage. Sourced to order against RFQ.","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":"0.36","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":"Screw-type terminals","at AC-1 maximum":"800 1/h","at AC-2 maximum":"400 1/h","at AC-3 maximum":"700 1/h","at AC-4 maximum":"200 1/h","lifecycle_stage":"current","Auxiliary Switch":"No","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":"700 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":"10 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":"48 V","at 500 V rated value":"2 A","at 60 Hz rated value":"48 V","at 600 V rated value":"52 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":"20 hp","at 460/480 V rated value":"50 hp","at 575/600 V rated value":"50 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":"11.4 W","at AC-2 at 400 V rated value":"30 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":"70.4 A","at AC-5b up to 400 V rated value":"53.9 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 125A (690V,100kA), aM: 63A (690V,100kA), BS88: 100A (415V,80kA)","Without Load Current Share Typical":"17.2 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)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"3.8 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 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), 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":"1 055 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"730 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"520 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"336 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"272 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":"25 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/c65375915a11dd58a91c2e77f1a56a81.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=414961&mlfb=3RT2037-1AH24","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2037-1AH24/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions of 3RT2037-1AH24?","answer":"Depth is 174 mm, width is 55 mm, height is 114 mm. Clearance: 10 mm upward, forward, and downward; 6 mm at the side."},{"question":"Will 3RT2037-1AH24 drop into a panel specified around 3RT2016-1AD02 without rewiring?","answer":"Yes — both are S2 frame size on 35 mm DIN rail with the same mounting hole pattern and terminal spacing. The 3RT2037-1AH24 is physically interchangeable; the difference is the higher current rating (65 A vs lower on the 3RT2016-1AD02), so verify your load current and conductor sizing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2037-1AH24","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/3RT2037-1AH24 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}}