{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2037-1AD04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2037-1AD04","canonicalUrl":"https://aoctrl.com/siemens/3RT2037-1AD04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2037-1AD04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, Size S2 power contactor, 3RT2037-1AD04, 65 A at 480 V AC-3, screw-type terminals, screw and snap-on mounting onto 35 mm DIN rail.","salesMarkdown":"## Contactor sizing and duty The Siemens SIRIUS 3RT2037-1AD04 is a Size S2 power contactor rated 65 A at 480 V in AC-3 duty — that's the motor-switching current for a typical 3-phase induction motor up to roughly 30 kW depending on voltage. At AC-1 (resistive loads) the maximum operating rate is 800 cycles per hour, while AC-3 (cage motor starting) allows 700 cycles per hour. The contactor carries a mechanical life of 10 million operations typical. Dimensions are 174 mm deep, 114 mm high, 55 mm wide. ## Coil and auxiliary contacts The magnet coil termination uses screw-type terminals. Rated switching capacity at 24 V is 6 A; at 48 V and 60 V it drops to 2 A; at 110 V it is 1 A; at 125 V it is 0.9 A; at 220 V it is 0.3 A; at 400 V it is 3 A; at 440 V it is 0.6 A; at 500 V it is 2 A. The contactor ships without an auxiliary switch block — that is a separate order for adding status feedback.","metaTitle":"Siemens 3RT2037-1AD04 SIRIUS Power Contactor, 65 A at 480 V","metaDescription":"Siemens SIRIUS 3RT2037-1AD04 power contactor, 65 A rated at 480 V AC-3. Screw/snap-on DIN rail mount, Size S2. Available to order — request a quote for current pricing and availabi","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":"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":"42 V","at 500 V rated value":"2 A","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":"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)","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/0351e7dca99f9c27f328449bad2ad450.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=503232&mlfb=3RT2037-1AD04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2037-1AD04/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT2037-1AD04 and how do I get a price?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit a request for quotation to get a firm price and lead time."},{"question":"What is 3RT2037-1AD04's listed depth (174 mm) on this component line?","answer":"The depth is 174 mm, with a height of 114 mm and a width of 55 mm."},{"question":"Will 3RT2037-1AD04 drop into a panel that was specified around 3RT2036-1AC20-ZX95 without rewiring?","answer":"Both are Size S2 SIRIUS contactors with the same DIN-rail footprint and screw-type coil terminals, so the mounting and main power connections are compatible. However, the auxiliary contact configuration differs — the 3RT2036 variant carries an integrated auxiliary switch block, while the 3RT2037-1AD04 ships without one. If the existing panel wiring relies on auxiliary contacts from the contactor, you will need to add a separate auxiliary switch block."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2037-1AD04","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/3RT2037-1AD04 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}}