{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP3725-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP3725-2","canonicalUrl":"https://aoctrl.com/siemens/5SP3725-2","factsUrl":"https://aoctrl.com/api/mcp/products/5SP3725-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SP3725-2, 1-pole miniature circuit breaker, 25 A, characteristic E, 25 kA breaking capacity at 230 V AC, overvoltage category IV.","salesMarkdown":"The 5SP3725-2 is a Siemens SENTRON 1-pole miniature circuit breaker (MCB) rated 25 A with a characteristic E trip curve and a 25 kA breaking capacity at 230 V AC. The E characteristic is designed for selective coordination — it tolerates short-duration inrush without tripping, so a downstream fault clears before this breaker opens, keeping the rest of the feeder live. That makes it a main or upstream breaker in a distribution board, not a final-circuit device protecting a single load. Overvoltage category IV and 6 kV surge voltage resistance confirm it is rated for the service entrance or main panel, not just sub-distribution. Temperature derating is built in: at 40 °C ambient the continuous current rating drops to 23.75 A; at 50 °C it is 22.5 A. Occupies 1.5 modular width units on the DIN rail. Depth is 89.5 mm, with an enclosure depth of 76.3 mm. Height is 151.3 mm. Fastens via busbar connection. Infeed at the box terminal is supported; outgoing feeder uses a spring-loaded terminal. Protection class IP40 with connected conductors — suitable for dry indoor enclosures, not washdown or outdoor exposure. Sealable design allows locking the cover to prevent unauthorized operation. Designed and tested to EN 60898 for breaking capacity and IEC 81346-2 / DIN EN 61346-2 for function designation (F). Insulation voltage rated 690 V. Shock resistance tested at 30 g, 3 impacts, 11 ms duration.","metaTitle":"Siemens 5SP3725-2 SENTRON MCB, 25A 1P, Char E, 25kA","metaDescription":"Siemens 5SP3725-2 SENTRON miniature circuit breaker, 25 A, 1-pole, characteristic E, 25 kA breaking capacity at 230 V AC. 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":"5SP3725-2","Height":"151.3 mm","Maximum":"70 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"25 kA","description":"Main miniature circuit breaker (SHU), 1-pole, E 25A, 230/400 V (block with L1, L2, L3)","Number Of Poles":"1","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":"25 A","protection class IP":"IP40, with connected conductors","Overvoltage Category":"IV","Design Of The Product":"Main miniature circuit breaker","Infeed At Box Terminal":"Yes","Number Of Poles / Note":"1P","acc. to DIN EN 61346-2":"F","at 30 °C / rated value":"25 A","at 40 °C / rated value":"23.75 A","at 45 °C / rated value":"23.125 A","at 50 °C / rated value":"22.5 A","at 55 °C / rated value":"21.875 A","Depth / Of The Enclosure":"76.3 mm","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"1.5","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","Insulation Voltage / Rated Value":"690 V","supply voltage / at AC / rated value":"230 V","Surge Voltage Resistance / Rated Value":"6 kV","Outgoing Feeder Via Spring-Loaded Terminal":"Yes","Fastening Method / Other Installation / Note":"On 40-mm busbar system in compliance with DIN 43870 Part 2","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 (Operating Cycles) / Typical":"20 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d5d18dbc57497a1f3e5dbbb8e7a737b1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=205509&mlfb=5SP3725-2"},"ai":{"faq":[{"question":"What is the 5SP3725-2's depth and height?","answer":"Depth is 89.5 mm overall (enclosure depth 76.3 mm). Height is 151.3 mm. Occupies 1.5 modular width units on DIN rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP3725-2","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/5SP3725-2 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}}