{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP3835-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP3835-2","canonicalUrl":"https://aoctrl.com/siemens/5SP3835-2","factsUrl":"https://aoctrl.com/api/mcp/products/5SP3835-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SP3835-2, 3-pole main miniature circuit breaker, 35 A rated at 400 V AC, 25 kA breaking capacity, tripping characteristic E, 4.5 modular width units, IP40.","salesMarkdown":"The Siemens 5SP3835-2 is a SENTRON main miniature circuit breaker — 3-pole, rated 35 A at 400 V AC, with a 25 kA breaking capacity per EN 60898. Rated current is 35 A at 30 °C, but it derates linearly: 33.25 A at 40 °C, 32.375 A at 45 °C, 31.5 A at 50 °C, and 30.625 A at 55 °C. If your panel ambient runs 40 °C, you're effectively limited to 33 A continuous — plan your load accordingly. Insulation voltage is 690 V, surge voltage resistance 6 kV, overvoltage category IV, pollution degree 3 — that's the utility-side rating, meaning it's rated for the harsh environment right after the meter, not just clean indoor distribution. The 4.5 modular width units (about 81 mm) are wider than a standard 1 MW MCB; that's because the E-curve mechanism and the 25 kA arc chamber need the space. It's sealable (locking slide, wire seal, cable ties) — important for utility or metering applications where tamper evidence is required. Fastens via busbar — designed for the SENTRON busbar system. Infeed at the box terminal; outgoing feeder uses spring-loaded terminals. Conductor cross-section: solid or stranded 2.5 mm² minimum, 50 mm² maximum.","metaTitle":"Siemens 5SP3835-2 SENTRON MCB, 3-Pole, 35 A, 25 kA, Characte","metaDescription":"Siemens 5SP3835-2 SENTRON miniature circuit breaker, 3-pole, 35 A, 25 kA breaking capacity, characteristic E. IP40, 4.5 MW, current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"89.5 mm","title":"5SP3835-2","Height":"151.3 mm","Maximum":"70 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"25 kA","description":"Main miniature circuit breaker (SHU), 3x 1-pole, E 35A, 230/400 V Mounting on 40 mm busbars","Number Of Poles":"3","Solid / Maximum":"50 mm²","Solid / Minimum":"2.5 mm²","lifecycle_stage":"current","Fastening Method":"Busbar","Shock Resistance":"30 g, at least 3 impacts, impact duration 11 ms","Product Brand Name":"SENTRON","Stranded / Maximum":"50 mm²","Stranded / Minimum":"2.5 mm²","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"35 A","protection class IP":"IP40, with connected conductors","Overvoltage Category":"IV","Design Of The Product":"Main miniature circuit breaker","Infeed At Box Terminal":"Yes","acc. to DIN EN 61346-2":"F","at 30 °C / rated value":"35 A","at 40 °C / rated value":"33.25 A","at 45 °C / rated value":"32.375 A","at 50 °C / rated value":"31.5 A","at 55 °C / rated value":"30.625 A","Depth / Of The Enclosure":"76.3 mm","Suitability For Operation":"Residential buildings/infrastructure","Design Of The Locking Device":"Locking slide with lock, additional wire seal, cable ties and Antilux","Number Of Modular Width Units":"4.5","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","supply voltage / at AC / rated value":"400 V","insulation voltage (Ui) / rated value":"690 V","Surge Voltage Resistance / Rated Value":"6 kV","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/771d0be1a3871b50f246c4ae5d3a7fab.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=161990&mlfb=5SP3835-2"},"ai":{"faq":[{"question":"What does tripping characteristic E mean?","answer":"Characteristic E is a Siemens-specific curve with a wider magnetic trip threshold than B or C — it holds longer on inrush to allow selective coordination with downstream breakers, typically used in main distribution boards feeding multiple sub-circuits."},{"question":"What conductor sizes does 5SP3835-2 accept?","answer":"Solid or stranded conductors from 2.5 mm² minimum up to 50 mm² maximum. The 50 mm² top end allows landing heavy feeder cables directly without an additional terminal block."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP3835-2","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/5SP3835-2 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}}