{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1034-1AC20-1AA0-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1034-1AC20-1AA0-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RT1034-1AC20-1AA0-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1AC20-1AA0-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1034-1AC20-1AA0-ZW97 power contactor, size S2, screw-type terminals, 18.5 kW at 500 V AC-3, 55 mm width, DIN EN 50022 rail mount.","salesMarkdown":"Its headline rating is 18.5 kW at 500 V under AC-3 duty (cites:) — that's the motor-switching current it handles for standard squirrel-cage motors, so it's the number you check against your motor nameplate. The contactor also carries a 10 kW rating at 690 V AC-3 (cites:), useful if you're running a higher-voltage motor on a 690 V line. For resistive loads (AC-1) at 400 V, it's rated 31 kW (cites:). The contactor is 55 mm wide, 112 mm tall, and 115 mm deep (cites:,) — that 115 mm depth is the dimension you check for enclosure clearance, especially if you're fitting it behind a shallow panel door. For solid conductors, it accepts 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) (cites:). For stranded wire, it takes 2x (0.75 to 25 mm²) (cites:) — that's a generous range, so you can land a 25 mm² motor feed without a ferrule if the lug is crimped right. Side-by-side mounting is allowed (cites:), with 6 mm spacing at the side (cites:). ## Coil and auxiliary ratings The coil is rated 24 V at 50/60 Hz (cites:,). The contactor's auxiliary contact ratings cover a range of voltages: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 6 A at 230 V, 3 A at 400 V (cites:,). The switching frequency at AC-3 is rated at 1,000 operations per hour maximum (cites:) — that's about one cycle every 3.6 seconds, so fine for most conveyor or pump cycling but not for high-speed pick-and-place. The contactor is identified per DIN EN 61346-2 and DIN EN 81346-2 with function code Q (cites:,). The IP rating on the front is IP00 (cites:) — that's an open device, so it needs to live inside a panel or enclosure, not out in the washdown zone. Side-by-side mounting is permitted (cites:), which helps when you're packing multiple contactors on a DIN rail.","metaTitle":"Siemens 3RT1034-1AC20-1AA0-ZW97 SIRIUS Power Contactor, 18.5","metaDescription":"Siemens SIRIUS 3RT1034-1AC20-1AA0-ZW97 power contactor, size S2, rated 18.5kW at 500V AC-3. Screw terminals, 55mm wide, DIN rail mount. Current production lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"115mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"55mm","Height":"112mm","Stranded":"2x (0.75 ... 25 mm²)","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","At The Side":"6mm","Rated value":"50Hz","On The Front":"IP00","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","During Storage":"-55 ... +80°C","Date 09.02.2015":"Changes preserved © Copyright Siemens AG 2015","at AC-3 maximum":"1 0001/h","lifecycle_stage":"current","During Operation":"-25 ... +60°C","Size of contactor":"S2","Product Brand Name":"SIRIUS","Degree of pollution":"3","Product designation":"power contactor","at 24 V Rated value":"10A","at 60 V Rated value":"2A","at 110 V Rated value":"1A","at 230 V Rated value":"6A","at 400 V Rated value":"3A","at 50 Hz Rated value":"24V","at 500 V Rated value":"18.5kW","at 60 Hz Rated value":"24V","at 690 V Rated value":"10kW","Instantaneous Contact":"0","Side-by-side mounting":"Yes","acc. to DIN EN 61346-2":"Q","acc. to DIN EN 81346-2":"Q","For Main Current Circuit":"screw-type terminals","Of The Contactor Typical":"10 000 000","Single Or Multi-Stranded":"2x (0,75 ... 16 mm²)","at AC-1 at 400 V Rated value":"31kW","at AC-2 at 400 V Rated value":"15kW","at AC-4 at 400 V Rated value":"15 000W","at DC-12 at 220 V Rated value":"1A","at DC-13 at 220 V Rated value":"0.3A","With Closing Power Of The Coil":"0.73","at 230 V at 60 °C Rated value":"18kW","at 690 V at 60 °C Rated value":"54kW","With The Holding Power Of The Coil":"0.41","With Type Of Assignment 1 Required":"fuse gL/gG: 125 A","With Type Of Assignment 2 Required":"fuse gL/gG: 63 A","Surge voltage resistance Rated value":"6kV","for AWG conductors for main contacts":"2x (18 ... 2)","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","For Auxiliary And Control Current Circuit":"screw-type terminals","for AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Finely Stranded Without Core End Processing":"2x (0.75 ... 16 mm²)","Contact reliability of the auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Thermal short-time current restricted to 10 s":"320A","Type of voltage of the control supply voltage":"AC","Control supply voltage frequency 2 Rated value":"60Hz","Apparent holding power of the magnet coil with AC":"11.3V·A","Apparent pick-up power of the magnet coil with AC":"127V·A","at 400 V at ambient temperature 40 °C Rated value":"50A","Contact rating of the auxiliary contacts acc. to UL":"A600 / Q600","Installation altitude at height above sea level maximum":"2 000m","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","Of The Contactor With Added Electronics-Compatible 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=440189&mlfb=3RT1034-1AC20-1AA0-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1AC20-1AA0-ZW97/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1034-1AC20-1AA0-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/3RT1034-1AC20-1AA0-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}}