{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2037-1AT60","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2037-1AT60","canonicalUrl":"https://aoctrl.com/siemens/3RT2037-1AT60","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2037-1AT60","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2037-1AT60 power contactor, Size S2, 65 A at 480 V AC-3, 55 mm width, screw-type coil terminals, screw and snap-on mounting on 35 mm DIN rail.","salesMarkdown":"## S2 Frame, 65 A AC-3 — What the Ratings Mean The 3RT2037-1AT60 is a SIRIUS power contactor in the S2 frame size, rated 65 A at 480 V in AC-3 duty — that's the motor-switching current for squirrel-cage motors, not the resistive-heat rating. AC-3 is the standard duty class for starting and disconnecting induction motors under load, so this contactor handles motor starts up to that current without welding the main poles. The screw-type coil terminals accept 2x 0.5 to 1.5 mm² or 2x 0.75 to 2.5 mm² solid or stranded wire — typical for a panel with mixed wire gauges on the same terminal. The auxiliary switch block is present, giving you normally-open/normally-closed contacts for interlocking or status feedback without an add-on module. ## Panel Fit and Clearance Mounting is screw or snap-on onto 35 mm DIN rail per DIN EN 60715 — the S2 frame takes a 55 mm wide slot on the rail. The depth is 130 mm, height 114 mm, so budget that into the enclosure depth and gland-plate clearance. Clearance around the contactor: 10 mm upwards and forwards, 6 mm at the sides, 10 mm downwards — those are the minimum air gaps for heat dissipation and arc quenching. Mounting position is flexible — ±180° rotation on a vertical surface, plus ±22.5° tilt forward or backward. That means it fits in tight enclosures where the rail is oriented non-standard, as long as the arc chamber orientation doesn't trap hot gases. ## Switching Duty and Mechanical Life Maximum switching frequency at AC-3 is 700 operations per hour — that's about one cycle every 5 seconds, typical for a conveyor or pump motor that cycles frequently but not continuously. At AC-4 (plugging/inching) it drops to 200 ops/hour, reflecting the higher contact wear from reversing or jogging under load. The mechanical life is 10 million operations typical — the main contacts will need inspection well before that, but the magnet assembly and spring set hold up. Arcing time is 10 to 20 ms, and the arc chamber clears in that window. The contactor is rated for AC-3e at 700 ops/hour as well — the 'e' suffix indicates enhanced electrical life for the same duty, so it's the same rating with a longer contact erosion margin. ## Environmental Range and Storage Operating temperature is -25 to +60 °C — fine for most indoor panels, but if the enclosure sits in direct sun or near a furnace, check the ambient at the contactor, not the room thermostat. Storage range is wider: -55 to +80 °C, so it can sit in a non-climate-controlled warehouse or truck without damage.","metaTitle":"Siemens 3RT2037-1AT60 SIRIUS Contactor, 65 A AC-3, S2 Size","metaDescription":"Siemens 3RT2037-1AT60 SIRIUS power contactor, 65 A at 480 V AC-3, S2 size, screw-type terminals, 35 mm DIN rail mount. Active production, quoted to order.","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","title":"3RT2037-1AT60","Height":"114 mm","Upwards":"10 mm","Forwards":"10 mm","at 60 Hz":"0.37","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"6 mm","description":"power contactor, AC-3e/AC-3, 65 A, 30 kW / 400 V, 3-pole, 600 V AC, 60 Hz, auxiliary contacts: 1 NO + 1 NC, screw terminal, size: S2","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":"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":"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":"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":"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 500 V rated value":"2 A","at 60 Hz rated value":"600 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":"18.5 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 / 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":"25 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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/13f1f34e3ae99162019787b0629ceb82.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=475157&mlfb=3RT2037-1AT60"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2037-1AT60","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/3RT2037-1AT60 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}