{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP3835-2XX32","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP3835-2XX32","canonicalUrl":"https://aoctrl.com/siemens/5SP3835-2XX32","factsUrl":"https://aoctrl.com/api/mcp/products/5SP3835-2XX32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SP3835-2XX32 main miniature circuit breaker, 3-pole, 35 A, E tripping characteristic, 25 kA breaking capacity, busbar mount.","salesMarkdown":"The Siemens SENTRON 5SP3835-2XX32 is a main miniature circuit breaker (MCB) — specifically a 3-pole unit rated 35 A with an E tripping characteristic, designed as the primary overcurrent protection in residential and infrastructure meter panels. It mounts on a 40-mm busbar system per DIN 43870 Part 2, which is the standard rail inside European meter cabinets. The E-curve (tripping characteristic class E) is the key differentiator here — it's a specialty curve between B and C, designed for main breakers where you need a higher magnetic trip threshold to avoid nuisance trips from inrush, but not as high as a K or Z curve. The solid and stranded wire range of 2.5 to 50 mm² covers everything from a 2.5 mm² meter tail up to a 50 mm² main feeder, so you're not fighting undersized terminals on a 35 A main. The 3-pole unit is 4.5 width units wide — that's about 81 mm on the busbar, which matters when you're packing multiple meters into a single cabinet. IP40 with connected conductors is standard for enclosed meter panels; no washdown rating here, it's a dry-location part. ## Mechanical and environmental specs Rated for 20,000 mechanical switching cycles typical — that's the expected life of the mechanism, not the electrical endurance at full load (which will be lower at 35 A). Shock resistance is 30 g for 11 ms, 3 impacts minimum, and vibration per IEC 60068-2-6 at 2 g, 20 cycles from 5 to 150 Hz. The locking slide accepts padlocks, wire seals, cable ties, or Antilux seals — useful for utility-lockable meter disconnects. Switch position indicator shows OFF = green, ON = red.","metaTitle":"Siemens 5SP3835-2XX32 SENTRON Main MCB, 3P, 35A, E-Curve, 25","metaDescription":"Siemens SENTRON 5SP3835-2XX32 main miniature circuit breaker, 3-pole, 35A, E tripping characteristic, 25kA breaking capacity per EN 60898. Busbar mount for meter cabinets. Sourced","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Solid":"2.5 ... 50 mm²","Maximum":"440 V","Minimum":"110 V","Sealable":"Yes","Stranded":"2.5 ... 50 mm²","Rated Value":"25 kA","Mounting type":"Busbar","During Storage":"-40 ... +70 °C","Number of poles":"3","lifecycle_stage":"current","Shock resistance":"30 g, at least 3 impacts, impact duration 11 ms","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP40, with connected conductors","Overvoltage category":"IV","Design of the product":"Main miniature circuit breaker","Number of width units":"4.5","Infeed at box terminal":"Yes","Number of poles / Note":"3P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Depth / of the enclosure":"76.3 mm","circuit-breaker / Design":"5SP3","Suitability for operation":"Residential buildings/infrastructure","Design of the locking device":"Locking slide with lock, additional wire seal, cable ties and Antilux","Current / at AC / rated value":"35 A","Tripping characteristic class":"E","acc. to EN 60898 / rated value":"25 kA","Position / of power supply cord":"Stipulated by installation in the lower section of the meter panel","Insulation voltage / rated value":"690 V","Supply voltage / at AC / rated value":"400 V","Supply voltage frequency / rated value":"50 Hz","Surge voltage resistance / rated value":"6 kV","Mounting type / other installation / Note":"On 40-mm busbar system in compliance with DIN 43870 Part 2","Outgoing Feeder Via Spring-Loaded Terminal":"Yes","Vibration resistance / acc. to IEC 60068-2-6":"2 g, 20 frequency cycles 5 to 150 to 15 Hz","Display version / for switch position indicator":"OFF = green, ON = red","Mechanical service life (switching cycles) / typical":"20 000"}},"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=444112&mlfb=5SP3835-2XX32","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SP3835-2XX32/alternatives.json"},"ai":{"faq":[{"question":"What is the E tripping characteristic for?","answer":"The E-curve is a specialty characteristic between B and C curves, designed for main circuit breakers where you need a higher magnetic trip threshold to avoid nuisance tripping from transformer inrush or motor starting, while still providing overcurrent protection for downstream circuits."},{"question":"What wire sizes does this breaker accept?","answer":"It accepts solid and stranded conductors from 2.5 mm² up to 50 mm² at the box terminal. The outgoing feeder uses a spring-loaded terminal."},{"question":"Where can I buy 5SP3835-2XX32 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"How does 5SP3835-2XX32 compare to a 3VA series breaker?","answer":"The 5SP3 is a dedicated main MCB for meter-cabinet busbar mounting (40 mm DIN 43870), while the 3VA series are modular DIN-rail breakers for distribution boards. They are not footprint-compatible — the 5SP3 mounts on the busbar, not a DIN rail. If your panel was specified around a 3VA, the 5SP3835-2XX32 will not drop in without rewiring and changing the mounting arrangement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP3835-2XX32","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/5SP3835-2XX32 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}}