{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2434-8XF32-1AG2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2434-8XF32-1AG2","canonicalUrl":"https://aoctrl.com/siemens/3RA2434-8XF32-1AG2","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2434-8XF32-1AG2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2434-8XF32-1AG2 star-delta contactor assembly, S2 frame, 22 kW at 400 V AC-3, 690 V max, screw terminals, 223 mm depth.","salesMarkdown":"## Star-delta contactor assembly, S2 frame — what ships in the box The 3RA2434-8XF32-1AG2 is a Siemens SIRIUS pre-assembled star-delta contactor assembly, not a bare contactor. It ships with three contactors: two 3RT2035-1AG20 units for the line and star legs, and one 3RT2026-1AG20 for the delta leg, plus the 3RA2933-2C RS assembly kit that ties them together mechanically and electrically. ## Mounting and panel fit — screw-fixed, with tilt allowance Fastened by screw fixing, not DIN rail. Dimensions are 177.5 mm wide, 142 mm high, and 223 mm deep — the depth is the dimension to watch when sliding this into a shallow enclosure. The contactor frame is S2, which is the physical size class that determines the mounting hole pattern and terminal spacing. Clearance around the assembly: 10 mm upwards, forwards, downwards, and to the side; 0 mm backwards (it can sit flush against the backplate). This is the minimum free air space for heat dissipation and arc flash containment. ## Wiring terminals and cable sizing For Type 2 coordination (no-weld on fault), the required fuse ratings are: gG NH 3NA, DIAZED 5SB, or NEOZED 5SE at 80 A. This is the fuse size that lets the contactor survive a bolted fault without welding the main contacts. ## Duty cycle and mechanical endurance Maximum switching rate in AC-3 duty is 1,000 operations per hour — about one start every 3.6 seconds. The mechanical life of the contactor typical is 10 million operations, which for a star-delta starter running at 10 starts per hour gives a service life well over 20 years before the contactor block needs replacement. The assembly is rated for shock at 18.5 g / 5 ms and 11.6 g / 10 ms — relevant if the panel is mounted on a vibrating machine base or near a press. ## Lifecycle and sourcing — current stage, quoted to order Sourced through independent distribution channels. The assembly includes the three contactors and the RS kit as a single orderable unit, which simplifies procurement versus sourcing the components separately.","metaTitle":"Siemens 3RA2434-8XF32-1AG2 SIRIUS Star-Delta Starter, 22 kW","metaDescription":"Siemens 3RA2434-8XF32-1AG2 SIRIUS star-delta contactor assembly, 22 kW at 400 V AC-3, S2 frame. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"223 mm","Solid":"2x (1 ... 35 mm²), 1x (1 ... 50 mm²)","Width":"177.5 mm","at AC":"18.5g / 5 ms, 11.6g / 10 ms","title":"3RA2434-8XF32-1AG2","Height":"142 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"0.36","at 60 Hz":"0.39","Backwards":"0 mm","Downwards":"10 mm","At The Side":"10 mm","description":"Contactor assembly for star-delta (wye-delta) start AC-3, 22/30 kW/400 V, 110 V AC 50/60 Hz, 3-pole, size S2 screw terminals electrical and mechanical interlock 3 NO + 3 NC integrated","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-3 maximum":"1 000 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw fixing","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)","Product Brand Name":"SIRIUS","Product Designation":"Contactor assembly for star-delta (wye-delta) start","Of Contactor Typical":"10 000 000","at 400 V rated value":"22 kW","at 50 Hz rated value":"110 V","at 60 Hz rated value":"110 V","Instantaneous Contact":"3","For Main Current Circuit":"screw-type terminals","1 Of The Supplied Contactor":"3RT2035-1AG20","2 Of The Supplied Contactor":"3RT2035-1AG20","3 Of The Supplied Contactor":"3RT2026-1AG20","at AC-3 rated value maximum":"690 V","Substance Prohibitance (Date)":"10/01/2014","of the supplied RS assembly kit":"3RA2933-2C","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 80 A","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 160 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","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 error per 100 million operating cycles","with low demand rate according to SN 31920":"40 %","protocol is supported AS-Interface protocol":"No","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Of The Supplied Function Module For Wye-Delta Circuits":"3RA2816-0EW20","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","product function control circuit interface with IO link":"No","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gG: 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/97ceb945aee5fc0050f88f51fde9e0ad.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=104035&mlfb=3RA2434-8XF32-1AG2"},"ai":{"faq":[{"question":"What contactors are included with 3RA2434-8XF32-1AG2?","answer":"The assembly ships with two 3RT2035-1AG20 contactors (line and star) and one 3RT2026-1AG20 (delta), plus the 3RA2933-2C RS assembly kit. This is a complete, pre-configured star-delta starter — no need to source individual contactors or interlocking hardware."},{"question":"What is the motor power rating for 3RA2434-8XF32-1AG2?","answer":"This covers standard 400 V industrial motors up to 22 kW and 690 V motors where star-delta starting is specified."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2434-8XF32-1AG2","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/3RA2434-8XF32-1AG2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}