{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT7037-1AN20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT7037-1AN20","canonicalUrl":"https://aoctrl.com/siemens/3RT7037-1AN20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT7037-1AN20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS Size S2 contactor, 3RT7037-1AN20, 3-pole, 690 V AC-3 rated max, screw-type terminals, IP20 front / IP00 terminal, 55 mm wide, snap-on DIN rail.","salesMarkdown":"## Integrator's first look — 3RT7037-1AN20 The Siemens 3RT7037-1AN20 is a Size S2 SIRIUS contactor — three main poles, all normally open, rated for AC-3 switching up to 690 V maximum. Coil holds at DC with 0.35 W holding power, pulls in at 0.76 W. Width is 55 mm, depth 115 mm, height 112 mm — occupies one standard modular slot. Side-by-side mounting is allowed, so no mandatory spacing between contactors on the rail. For type of coordination 2 (no welding under short-circuit), the required backup fuse is a gL/gG NH 3NA: 100 A. For type of coordination 1 (welding allowed), the same fuse type at 160 A. Mechanical shock resistance is 15g for 5 ms sine pulse, 8g for 10 ms.","metaTitle":"Siemens 3RT7037-1AN20 SIRIUS Contactor, 3-Pole, Size S2, 55","metaDescription":"Siemens 3RT7037-1AN20 SIRIUS contactor, Size S2, 3-pole, 690 V AC-3 rated, screw terminals, IP20 front. Active production. Sourced to order against RFQ.","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","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":"220 V","at 60 Hz rated value":"220 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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1534127&mlfb=3RT7037-1AN20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT7037-1AN20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT7037-1AN20?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time."},{"question":"What backup fuse is required for this contactor?","answer":"For type of coordination 2, use gL/gG NH 3NA: 100 A. For type of coordination 1, use the same type at 160 A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT7037-1AN20","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/3RT7037-1AN20 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}}