{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1034-1AL20-ZW95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1034-1AL20-ZW95","canonicalUrl":"https://aoctrl.com/siemens/3RT1034-1AL20-ZW95","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1AL20-ZW95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S2, 55 mm width, screw-type terminals, 18.5 kW at 500 V AC-3, 10 A at 24 V rated value.","salesMarkdown":"It handles 18.5 kW at 500 V in AC-3 duty (motor switching) and 10 kW at 690 V, with a mechanical life of 10,000,000 operations. Rated for 50/60 Hz, the contactor carries a 230 V coil at both frequencies and delivers 10 A at 24 V rated value for auxiliary circuits. The IP20 front enclosure protects against finger contact, while the terminal area is IP00 — expect exposed live parts at the wiring point, standard for this class. Screw-type terminals on the main current circuit accept solid conductors from 2x (0.5 to 1.5 mm²) up to 2x (0.75 to 4 mm²) for the smaller wires, and stranded up to 2x (0.75 to 25 mm²). The solid-or-stranded range covers 2x (0.75 to 16 mm²). That covers most panel wiring from control circuits to motor feeders without needing adapters. Maximum operating rates: 1,200 cycles per hour for AC-1 (resistive loads), 1,000 for AC-3 (motor starting), 750 for AC-2 (slip-ring motors), and 250 for AC-4 (plugging/inching). The 50 Hz operating range of 0.8 to 1.1 and 60 Hz range of 0.85 to 1.1 define the voltage tolerance band for the coil. Auxiliary contact ratings: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 2 A at 60 V. The 220 V rated value is 0.3 A, and 110 V is 1 A. These numbers govern what pilot devices or PLC inputs the auxiliary contacts can drive — stay within these limits to avoid contact welding.","metaTitle":"Siemens 3RT1034-1AL20-ZW95 SIRIUS Power Contactor, S2, 55 mm","metaDescription":"Siemens SIRIUS power contactor 3RT1034-1AL20-ZW95, size S2, 55 mm width, screw terminals, rated 18.5 kW at 500 V AC-3. Current lifecycle stage. DIN rail mount.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"115 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 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":"750 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"250 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":"18.5 kW","at 60 Hz rated value":"230 V","at 690 V rated value":"10 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"15 kW","at AC-4 at 400 V rated value":"29 A","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"16 mm²","at 60 °C minimum permissible":"10 mm²","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"18 kW","at 690 V at 60 °C rated value":"54 kW","at AWG cables for main contacts":"2x (18 ... 2)","For Auxiliary And Control Circuit":"screw-type 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 (20 ... 16), 2x (18 ... 14), 1x 12","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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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":"320 A","Finely Stranded Without Core End Processing":"2x (0.75 ... 16 mm²)","apparent holding power of magnet coil at AC":"11.3 VA","apparent pick-up power of magnet coil at AC":"127 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":"0.73","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.41","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=472171&mlfb=3RT1034-1AL20-ZW95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1AL20-ZW95/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT1034-1AL20-ZW95?","answer":"The peer 3RT1034-1AN60-1AA0 is a functional alternative within the same SIRIUS S2 frame. Both share the 55 mm width, screw terminals, and similar AC-3 power ratings. The main difference is the coil voltage — 3RT1034-1AL20-ZW95 uses a 230 V 50/60 Hz coil, while the peer uses a different coil voltage. Verify coil compatibility before swapping."},{"question":"What is the depth of 3RT1034-1AL20-ZW95?","answer":"The depth is 115 mm. Combined with a height of 112 mm and width of 55 mm, it fits standard DIN-rail enclosures with typical back-panel clearance."},{"question":"What solid wire sizes does the terminal accept?","answer":"The screw terminals accept solid conductors in these combinations: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and max 2x (0.75 to 4 mm²). For stranded wire, the range is 2x (0.75 to 25 mm²)."},{"question":"Will 3RT1034-1AL20-ZW95 drop into a panel specified around 3RT1034-1AN60-1AA0 without rewiring?","answer":"Mechanically yes — both are S2 size with 55 mm width and snap onto the same 35 mm DIN rail. The screw terminal layout is identical. The only electrical difference is the coil voltage: this unit is 230 V 50/60 Hz, while the peer uses a different coil. If the panel wiring and control voltage match 230 V, no rewiring is needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1034-1AL20-ZW95","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/3RT1034-1AL20-ZW95 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}}