{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2436-8XF32-1AL2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2436-8XF32-1AL2","canonicalUrl":"https://aoctrl.com/siemens/3RA2436-8XF32-1AL2","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2436-8XF32-1AL2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2436-8XF32-1AL2 star-delta (wye-delta) contactor assembly, 45 kW at 400 V AC-3, S2 size, screw-type terminals, 177.5 x 142 x 223 mm.","salesMarkdown":"## What this star-delta assembly delivers The 3RA2436-8XF32-1AL2: It ships with three contactors: two 3RT2036-1AL20 units for the line and delta legs, and one 3RT2028-1AL20 for the star leg, plus the 3RA2933-2C RS assembly kit. The S2 contactor size means the assembly is built around the 3RT20 frame, which handles the mechanical and thermal demands of repeated starts. Rated for a maximum operating voltage of 690 V AC-3 and a switching frequency of 800 operations per hour at AC-3 maximum, this assembly is sized for continuous process lines where the start cycle repeats every few minutes. ## Mounting and panel fit Dimensions are 177.5 mm wide, 142 mm high, and 223 mm deep — the depth is the dimension to check first in a shallow enclosure, as it exceeds the panel depth of many compact cabinets. Fastening is by screw fixing, not DIN-rail snap-on. Clearance around the assembly: 10 mm upwards, forwards, downwards, and to the side; 0 mm backwards — meaning the back of the unit can sit flush against the panel wall, which helps in tight enclosures. ## Wiring and termination All terminals — main current circuit, magnet coil, and auxiliary contacts — use screw-type terminals. The required upstream fusing for type 2 coordination is specified: gG NH 3NA, DIAZED 5SB, or NEOZED 5SE at 80 A. This matters for the panel builder sizing the branch circuit protection — using the wrong fuse class voids the coordination claim. ## Environmental limits and shock resistance The 60 °C ceiling is typical for IP20 enclosed gear in ventilated cabinets — if the panel ambient exceeds this, derating applies. Shock resistance is rated at 18.5g for 5 ms and 11.6g for 10 ms under AC conditions — figures that cover most industrial vibration environments short of direct hammer-mill mounting. ## Lifecycle and sourcing It is not a phase-out or NRND line.","metaTitle":"Siemens 3RA2436-8XF32-1AL2 SIRIUS Star-Delta Starter, 45 kW","metaDescription":"Siemens 3RA2436-8XF32-1AL2 SIRIUS star-delta contactor assembly, 45 kW at 400 V AC-3. Active production, quoted to order. Screw terminals, S2 size.","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":"3RA2436-8XF32-1AL2","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, 45 kW/400 V, 230 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":"800 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":"45 kW","at 50 Hz rated value":"230 V","at 60 Hz rated value":"230 V","Instantaneous Contact":"3","For Main Current Circuit":"screw-type terminals","1 Of The Supplied Contactor":"3RT2036-1AL20","2 Of The Supplied Contactor":"3RT2036-1AL20","3 Of The Supplied Contactor":"3RT2028-1AL20","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/c3c9e35f87f46a288aa2f127f7421d25.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=529917&mlfb=3RA2436-8XF32-1AL2"},"ai":{"faq":[{"question":"What contactors are included in this star-delta assembly?","answer":"The assembly ships with two 3RT2036-1AL20 contactors (line and delta legs) and one 3RT2028-1AL20 (star leg), plus the 3RA2933-2C RS assembly kit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2436-8XF32-1AL2","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/3RA2436-8XF32-1AL2 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}}