{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-3AL20-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-3AL20-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-3AL20-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-3AL20-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S2, 3RT1035-3AL20-ZW97, 18.5 kW at 400 V AC-2, 22 kW at 500 V AC-3, screw terminals, DIN rail mount, IP20 front, IP00 terminals.","salesMarkdown":"The Siemens SIRIUS 3RT1035-3AL20-ZW97 is a size S2 power contactor rated for 18.5 kW at 400 V in AC-2 duty, and 22 kW at 500 V in AC-3 duty, with screw-type terminals on the main circuit. The 18.5 kW AC-2 rating at 400 V means it handles slip-ring motor loads or other moderate inrush applications up to that power level — AC-2 covers starting and plugging duty, so it's not just a resistive load switch. The 22 kW AC-3 rating at 500 V covers standard squirrel-cage motors; that's the number to size against if your motor is a direct-on-line start. At 690 V it's rated 11.4 kW, so the same contactor works on 690 V systems with a derated motor load. Coil-side ratings: at 24 V it switches 10 A, at 230 V it switches 6 A, and at 400 V it switches 3 A — these are the auxiliary contact capacities, not the main pole current. ## Deployment context This contactor is DIN-rail mountable and side-by-side mountable, so it fits into standard control panels without extra spacing. The front is IP20 (finger-safe), the terminals are IP00 (touch-hazard at the connection point), so keep the panel door closed during operation.","metaTitle":"Siemens SIRIUS 3RT1035-3AL20-ZW97 Power Contactor, 18.5 kW A","metaDescription":"Siemens SIRIUS 3RT1035-3AL20-ZW97 power contactor, size S2, 18.5 kW at 400 V AC-2. Screw terminals, DIN rail mount. Current production. Available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"115 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"55 mm","at AC":"7 ... 20 ms","Height":"112 mm","Stranded":"2x (0.75 ... 25 mm²)","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","Arcing Time":"10 ... 15 ms","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","at AC-1 maximum":"1 200 1/h","at AC-2 maximum":"600 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"300 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Size Of Contactor":"S2","Solid Or Stranded":"2x (0.75 ... 16 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"230 V","at 500 V rated value":"22 kW","at 60 Hz rated value":"230 V","at 690 V rated value":"11.4 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"18.5 kW","at AC-4 at 400 V rated value":"35 A","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"16 mm²","at 60 °C minimum permissible":"16 mm²","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"22 kW","at 690 V at 60 °C rated value":"66 kW","at AWG cables for main contacts":"2x (18 ... 2)","For Auxiliary And Control Circuit":"spring-loaded terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 63 A","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"fuse gL/gG: 125 A","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Thermal Short-Time Current Limited To 10 S":"400 A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","apparent holding power of magnet coil at AC":"15 VA","apparent pick-up power of magnet coil at AC":"170 VA","Type Of Voltage Of The Control Supply Voltage":"AC","Required Spacing For Grounded Parts At The Side":"6 mm","contact rating of auxiliary contacts according to UL":"A600 / Q600","Inductive Power Factor With Closing Power Of The Coil":"0.76","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.35","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","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","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=501301&mlfb=3RT1035-3AL20-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-3AL20-ZW97/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1035-3AL20-ZW97 and get a price?","answer":"We source this part to order against an RFQ. Submit a request for current pricing and availability; we confirm both at quote time through our independent distribution network."},{"question":"What is the closest functional second-source for 3RT1035-3AL20-ZW97?","answer":"The Siemens 3RT5035-1AH00 is a functionally similar SIRIUS contactor, but it's a different frame size and terminal arrangement. It will not drop into a panel wired for the 3RT1035-3AL20-ZW97 without rewiring the main circuit and checking mounting dimensions."},{"question":"What is the depth of 3RT1035-3AL20-ZW97?","answer":"The depth is 115 mm. That's the dimension from the mounting surface to the front of the contactor — relevant for enclosure depth clearance."},{"question":"What solid wire size does 3RT1035-3AL20-ZW97 accept?","answer":"It accepts 2x (0.25 to 2.5 mm²) solid wire on the terminals. For stranded wire, it accepts 2x (0.75 to 25 mm²)."},{"question":"What compliance documentation is available for 3RT1035-3AL20-ZW97?","answer":"As a standard Siemens SIRIUS product, it carries the usual CE marking for the EU market. Specific RoHS, REACH, and UL documentation should be available from Siemens upon request or through the product's compliance portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-3AL20-ZW97","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/3RT1035-3AL20-ZW97 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}}