{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT7037-1AH20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT7037-1AH20","canonicalUrl":"https://aoctrl.com/siemens/3RT7037-1AH20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT7037-1AH20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT7037-1AH20, 3-pole contactor Size S2, screw terminals, 690 V AC-3/AC-3e, 800 1/h max, IP20 front, 55 x 112 x 115 mm.","salesMarkdown":"The Siemens 3RT7037-1AH20 is a SIRIUS S2-size 3-pole contactor with screw-type terminals for main and auxiliary circuits. The 55 mm width and 112 mm height fit a standard 35 mm DIN rail (DIN EN 50022) with screw and snap-on fastening; side-by-side mounting is supported, and the mounting position allows ±180° rotation on a vertical surface plus ±22.5° tilt forward/backward. The IP20 front enclosure protects against finger contact during panel access, while the terminal area is IP00 — bare terminals, so the contactor relies on the panel enclosure for overall ingress protection. Rated insulation voltage is 690 V, and surge voltage resistance is 6 kV — this contactor is built for 400/480 V panels with headroom for 690 V systems. The AC-3 and AC-3e maximum operating frequency is 800 operations per hour; for AC-4 (plugging/reversing) it drops to 250 1/h. That 800 1/h figure governs how fast you can cycle the contactor under motor load — exceeding it risks overheating the coil or welding the contacts. ## Integration notes for panel builders Screw terminals accept 2x (0.5…1.5 mm²) solid or stranded, or 2x (0.75…2.5 mm²) finely stranded with ferrule. The auxiliary switch extension option is supported — you can add a side-mount auxiliary block without changing the contactor body. For short-circuit protection, Type 1 coordination requires a gL/gG NH 3NA fuse rated 160 A; Type 2 requires 100 A. The shock resistance is 15g for 5 ms and 8g for 10 ms sine pulse, so it withstands typical panel vibration from adjacent contactors or drives.","metaTitle":"Siemens 3RT7037-1AH20 Contactor, 3-pole S2, 690 V AC-3, 55 m","metaDescription":"Siemens 3RT7037-1AH20 SIRIUS 3-pole contactor, Size S2. Rated 690 V AC-3/AC-3e, 800 ops/h max. Screw terminals, IP20 front. Active 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","title":"3RT7037-1AH20","Height":"112 mm","at 50 Hz":"0.36","at 60 Hz":"0.38","description":"Contactor AC-3 65A/30kW 400V 48 VAC, 50/60 Hz 3-pole, Size S2 Screw terminal","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 DIN rail according to DIN EN 50022","at AC-3e maximum":"800 1/h","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":"42 V","at 60 Hz rated value":"42 V","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-3 rated value maximum":"690 V","at AC-3e rated value maximum":"690 V","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","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6e151928c11dd9f65a7a7c1c33d50d1c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1534118&mlfb=3RT7037-1AH20"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT7037-1AH20?","answer":"Pricing and availability are confirmed at quote time. Submit an RFQ through the storefront; the part is sourced to order through independent distribution."},{"question":"What are the key ratings of 3RT7037-1AH20?","answer":"It is a 3-pole S2 contactor rated 690 V AC-3/AC-3e maximum, with an operating frequency of 800 1/h in AC-3/AC-3e and 250 1/h in AC-4. The coil draws 0.76 W closing, 0.35 W holding DC. Dimensions are 55 mm wide, 112 mm high, 115 mm deep."},{"question":"Will 3RT7037-1AH20 drop into a panel specified around 3RT6028-1AB00 without rewiring?","answer":"Both are 3-pole contactors with screw terminals and mount on 35 mm DIN rail, but the 3RT7037-1AH20 is a larger S2 frame (55 mm wide) compared to the S0 frame of the 3RT6028-1AB00. Panel cutouts and busbar spacing designed for the S0 frame may not accommodate the extra width. Verify the physical footprint and terminal layout before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT7037-1AH20","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/3RT7037-1AH20 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}