{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SE2902-0AA20","brand":"Siemens","brandSlug":"siemens","productSlug":"3SE2902-0AA20","canonicalUrl":"https://aoctrl.com/siemens/3SE2902-0AA20","factsUrl":"https://aoctrl.com/api/mcp/products/3SE2902-0AA20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3SE2902-0AA20 momentary-contact foot switch, 1-pedal, metal enclosure IP65, 1 NO + 1 NC, cable entry M20 x 1.5, 265 x 156 x 138 mm.","salesMarkdown":"## What this foot switch carries The Siemens SIRIUS 3SE2902-0AA20 is a momentary-contact foot switch with a single pedal, no latching, and no interlock — it returns to rest when you lift your foot. The metal enclosure is rated IP65, so it handles washdown and dusty shop-floor environments without a secondary cover. One normally-open and one normally-closed auxiliary contact live inside, wired through a single M20 x 1.5 cable entry. The actuation force is 15 N minimum — a deliberate press, not a brush-by. ## Current ratings by control voltage The contacts are rated 16 A at both 230 V and 400 V AC, 3 A at 24 V, and 0.25 A at 250 V DC. The 16 A figure at 400 V means this switch can directly interrupt a small motor contactor coil or a pilot circuit at line voltage without an interposing relay — useful when the panel is tight on DIN-rail space. Operating temperature spans -25 °C to +80 °C, which covers unheated warehouses and hot machinery enclosures. The enclosure dimensions are 265 mm deep, 156 mm wide, 138 mm high — allow clearance for the M20 gland and the pedal travel when mounting on a machine base or floor plate. ## Lifecycle and sourcing reality No official successor or direct cross-reference exists because the part is current. The SIRIUS family covers a range of foot-switch variants (latching, two-pedal, safety-rated), but this momentary-contact, single-pedal, non-latching configuration is the baseline version for general machine control.","metaTitle":"Siemens 3SE2902-0AA20 SIRIUS Foot Switch, 1 NO+1 NC, IP65","metaDescription":"Siemens SIRIUS 3SE2902-0AA20 momentary-contact foot switch, 1-pedal, metal enclosure IP65, 1 NO+1 NC contacts, rated 16 A at 230/400 V.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Pushbutton Switches"],"specifications":{"Depth":"265 mm","Width":"156 mm","title":"3SE2902-0AA20","Height":"138 mm","Latching":"No","Interlock":"No","description":"Momentary-contact foot switch, 1-pedal With cover, without latching Metal enclosure IP65, 1 NO+1 NC, cable entry M20 x 1.5","lifecycle_stage":"current","Cable Entry Type":"M20 x 1.5","Of The Enclosure":"black","Product Brand Name":"SIRIUS","Product Designation":"momentary-contact foot switch","at 24 V rated value":"3 A","protection class IP":"IP65","at 230 V rated value":"16 A","at 250 V rated value":"0.25 A","at 400 V rated value":"16 A","Material Of The Enclosure":"metal","Number Of Switching Steps":"1","Of The Enclosure Top Part":"grey","Substance Prohibitance (Date)":"07/01/2006","Number Of The Actuation Pedals":"1","Suitability For Use Safety Switch":"No","Ambient Temperature During Operation":"-25 ... +80 °C","reference code according to IEC 81346-2":"S","with low demand rate according to SN 31920":"50 %","with high demand rate according to SN 31920":"50 %","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Minimum Actuating Force In Directions Of Actuation":"15 N"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$99.06","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/790285bbc5bef4537a007da8edb1c964.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=346036&mlfb=3SE2902-0AA20"},"ai":{"faq":[{"question":"Does the 3SE2902-0AA20 have a latching or interlock function?","answer":"No — this is a momentary-contact foot switch with no latching and no interlock. The pedal returns to the off position when pressure is released."},{"question":"What cable gland size does the 3SE2902-0AA20 accept?","answer":"The enclosure has a single M20 x 1.5 cable entry — standard for metric industrial controls. Use a matching M20 gland rated for the cable diameter and IP65 seal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SE2902-0AA20","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/3SE2902-0AA20 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}