{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP3435-3","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP3435-3","canonicalUrl":"https://aoctrl.com/siemens/5SP3435-3","factsUrl":"https://aoctrl.com/api/mcp/products/5SP3435-3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SP3435-3, main miniature circuit breaker, 4-pole, 35 A rated at 400 V AC, E tripping characteristic, 25 kA breaking capacity per EN 60898, for standard rail mounting.","salesMarkdown":"That E-curve means it's designed for transformer and motor-starting loads where inrush is higher than a standard B or C curve handles — it holds through the magnetizing surge without nuisance tripping, then clears fast on a hard fault. Breaking capacity is 25 kA per EN 60898, so it's rated for commercial and light industrial service entrance panels where fault current runs that high. Occupies 6 modular width units — plan for that in the panel layout. Degree of pollution 3, overvoltage category IV — this is a main breaker, not a branch device; it sits at the panel infeed where surge exposure is highest. ## Thermal derating and wiring Rated 35 A at 30 °C ambient. Derates to 33.25 A at 40 °C, 31.5 A at 50 °C, and 30.625 A at 55 °C — if the panel runs hot, size the upstream protection accordingly. Terminals accept 2.5 to 50 mm² solid or stranded, with saddle terminals and box-terminal infeed. That 50 mm² top end handles the main feeder cable without pigtails. The integrated locking slide accepts a padlock, wire seal, or cable tie for lockout/tagout compliance.","metaTitle":"Siemens 5SP3435-3 SENTRON MCB, 35A 4P E-Curve, 25kA","metaDescription":"Siemens 5SP3435-3 SENTRON miniature circuit breaker, 35A rated at 400V AC, 4-pole, E-curve, 25kA breaking capacity per EN 60898. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76.3 mm","title":"5SP3435-3","Height":"128 mm","Maximum":"70 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"25 kA","description":"Main miniature circuit breaker (SHU), 4-pole, E 35, 400V","Number Of Poles":"4","Solid / Maximum":"50 mm²","Solid / Minimum":"2.5 mm²","lifecycle_stage":"current","Fastening Method":"standard rail","Saddle Terminals":"Yes","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","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","according to 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","according to IEC 81346-2":"F","Suitability For Operation":"Residential buildings/infrastructure","Design Of The Locking Device":"Integrated locking slide, lockable by means of a lock, wire seal and cable ties","Number Of Modular Width Units":"6","Tripping Characteristic Class":"E","Position / Of Power Supply Cord":"Any","according to EN 60898 / rated value":"25 kA","supply voltage / at AC / rated value":"400 V","insulation voltage (Ui) / rated value":"690 V","Supply Voltage Frequency / Rated Value":"50 Hz","Surge Voltage Resistance / Rated Value":"6 kV","Display Version / For Switch Position Indicator":"OFF = green, ON = red","vibration resistance / according to IEC 60068-2-6":"2 g, 20 frequency cycles 5 to 150 to 15 Hz","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/f837002a4ac584f41608e5e643ab1b80.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=173450&mlfb=5SP3435-3"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SP3435-3?","answer":"25 kA rated value per EN 60898 at 400 V AC, which covers most commercial and light industrial service entrance fault levels."},{"question":"What wire sizes does 5SP3435-3 accept?","answer":"Solid or stranded from 2.5 mm² minimum up to 50 mm² maximum, with saddle terminals and box-terminal infeed for the main feeder."},{"question":"Where can I buy 5SP3435-3?","answer":"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 position."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP3435-3","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/5SP3435-3 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}}