{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP3235-3","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP3235-3","canonicalUrl":"https://aoctrl.com/siemens/5SP3235-3","factsUrl":"https://aoctrl.com/api/mcp/products/5SP3235-3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SP3 series, miniature circuit breaker (MCB), 2-pole, 35 A rated current, E tripping characteristic, 25 kA breaking capacity at 400 V AC, 50 Hz, standard rail mount.","salesMarkdown":"The Siemens SENTRON 5SP3235-3 is a 2-pole miniature circuit breaker (MCB) with an E tripping characteristic, rated 35 A at 400 V AC, 50 Hz. The 3 width units (about 52.5 mm) occupy the same footprint as a typical 2-pole MCB. Terminals accept 2.5 to 50 mm² solid or stranded copper — that's a wide lug range, so you can land a 50 mm² feeder without a reducer. Saddle terminals and box-terminal infeed are standard; the integrated locking slide accepts a padlock, wire seal, or cable tie for lockout/tagout. ## Environmental and electrical ratings Rated insulation voltage 690 V, overvoltage category IV, pollution degree 3 — this is a heavy-duty mains-side breaker, not a control-circuit accessory. Surge voltage resistance 6 kV. Ambient range -40 to 70 °C, which covers most indoor panel conditions including unheated utility rooms. Shock tested to 30 g, 11 ms half-sine, and vibration per IEC 60068-2-6 at 2 g, 5–150 Hz — it will hold up in industrial settings with moderate vibration. The 5SP3 series is a standard Siemens SENTRON line, widely used across European and export panels.","metaTitle":"Siemens SENTRON 5SP3235-3 MCB, 35A 2P E-Curve, 25kA","metaDescription":"Siemens SENTRON 5SP3235-3 miniature circuit breaker, 35A, 2-pole, E-trip curve, 25kA breaking capacity at 400V AC. Current production. Available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76.3 mm","title":"5SP3235-3","Height":"128 mm","Maximum":"70 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"25 kA","description":"Main miniature circuit breaker (SHU), 2-pole, E 35, 400V","Mounting type":"standard rail","Number of poles":"2","Solid / Maximum":"50 mm²","Solid / Minimum":"2.5 mm²","lifecycle_stage":"current","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","Protection class IP":"IP40, with connected conductors","Overvoltage category":"IV","Design of the product":"Main miniature circuit breaker","Number of width units":"3","Infeed at box terminal":"Yes","Number of poles / Note":"2P","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":"Integrated locking slide, lockable by means of a lock, wire seal and cable ties","Tripping characteristic class":"E","acc. to EN 60898 / rated value":"25 kA","Position / of power supply cord":"Any","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","Operating current / at AC / rated value":"35 A","Mounting type / other installation / Note":"On standard mounting rail 35 mm acc. to EN 60715","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/31d77d5f06b058fa9b0994fea868eb6c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=302866&mlfb=5SP3235-3"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SP3235-3?","answer":"25 kA per EN 60898 at 400 V AC. That's the rated short-circuit capacity — it will safely interrupt a fault up to 25 kA without external fusing."},{"question":"What is the E tripping characteristic used for?","answer":"The E curve (between B and K in magnetic trip threshold) is designed for main or distribution circuit breakers where you need a higher magnetic trip than a standard B or C curve to avoid nuisance tripping from transformer inrush or motor starting loads, but not as high as a K curve. Typical in residential and light commercial mains."},{"question":"Where can I buy the 5SP3235-3?","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 offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP3235-3","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/5SP3235-3 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}}