{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT7037-1AG20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT7037-1AG20","canonicalUrl":"https://aoctrl.com/siemens/3RT7037-1AG20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT7037-1AG20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT7037-1AG20, Size S2 contactor, 3-pole, screw-type terminals, AC-3 rated voltage 690 V, IP20 front / IP00 terminal, screw and snap-on 35 mm DIN rail mounting.","salesMarkdown":"The control supply is AC voltage, with a coil that draws 0.76 W closing power and holds at 0.35 W DC. ## Ratings that matter for the panel The AC-3 maximum switching frequency is 800 operations per hour; if you're pushing into AC-4 duty (plugging, inching), that drops to 250 per hour. That's the difference between running a conveyor and jogging a press — plan your cycle times accordingly. Fuse coordination is spelled out: for Type 2 coordination you need gL/gG NH 3NA fuses rated at 100 A; for Type 1 coordination, those same fuses go to 160 A. That's your short-circuit protection curve — match it to your upstream breaker or the coordination study won't hold. Operating temperature range is -10 to +55 °C, storage from -25 to +70 °C. The enclosure rating is IP20 on the front and IP00 at the terminals — the terminals are live when the panel door is open, so standard finger-safe shrouding or a cover is expected. Both the main current circuit and the auxiliary/control circuit use screw-type terminals. The main terminals accept 2x (0.5 to 1.5 mm²) solid or stranded, or 2x (0.75 to 2.5 mm²). Finely stranded wire with core-end processing follows the same cross-section range. That covers most panel wiring up to 2.5 mm² — if you're running larger motor feeders, you'll need a terminal adapter or a larger frame size. The contactor accepts auxiliary switch modules as a product extension, so you can add NO/NC blocks for feedback or interlocking without replacing the base unit.","metaTitle":"Siemens 3RT7037-1AG20 S2 Contactor, 3-Pole, 690V AC-3, Screw","metaDescription":"Siemens 3RT7037-1AG20 Size S2 contactor, 3-pole main contacts, 690V AC-3 max, screw terminals, IP20 front. Current production. Sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"115 mm","Width":"55 mm","Height":"112 mm","at 50 Hz":"0.36","at 60 Hz":"0.38","On The Front":"IP20","During Storage":"-25 ... +70 °C","Of The Terminal":"IP00","at AC-3 maximum":"800 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","During Operation":"-10 ... +55 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","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)","Degree Of Pollution":"3","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"110 V","at 60 Hz rated value":"110 V","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","Insulation Voltage Rated Value":"690 V","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","With Type Of Assignment 2 Required":"gL/gG NH 3NA: 100 A","closing power of magnet coil at DC":"0.76 W","holding power of magnet coil at DC":"0.35 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"gL/gG NH 3NA: 160 A","shock resistance with sine pulse at AC":"15g / 5 ms, 8g / 10 ms","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","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":"acceptability for PLC control (17 V, 5 mA)","Type Of Voltage Of The Control Supply Voltage":"AC","operating voltage at AC-3 rated value maximum":"690 V","operational current at DC-13 at 220 V rated value":"0.3 A","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","number of NC contacts for auxiliary contacts instantaneous contact":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","Connectable Conductor Cross-Section For Main Contacts Finely Stranded With Core End Processing":"25 mm²","Connectable Conductor Cross-Section For Auxiliary Contacts Finely Stranded With Core End Processing":"0.5 ... 2.5 mm²"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1534112&mlfb=3RT7037-1AG20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT7037-1AG20/alternatives.json"},"ai":{"faq":[{"question":"What is the 3RT7037-1AG20 used for?","answer":"It is a Size S2 three-pole contactor rated for AC-3 motor switching up to 690 V, used in motor control centers, conveyor drives, pump panels, and general industrial machine control where three-phase loads need to be switched under load."},{"question":"Where can I buy the 3RT7037-1AG20?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time, not before."},{"question":"What are the key dimensions of the 3RT7037-1AG20?","answer":"Width is 55 mm, height is 112 mm, depth is 115 mm. It mounts on 35 mm DIN rail per DIN EN 50022."},{"question":"Will the 3RT7037-1AG20 drop into a panel designed for a 3RT6017-1AF01?","answer":"Both are 3-pole screw-terminal contactors from the SIRIUS family, but the 3RT7037-1AG20 is a Size S2 frame while the 3RT6017-1AF01 is a smaller Size S0. The S2 is physically larger (55 mm wide vs S0's ~45 mm), so it will not fit the same DIN-rail footprint without panel rework. Check the mounting dimensions before ordering."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT7037-1AG20","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/3RT7037-1AG20 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}}