{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP3725-2KK01","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP3725-2KK01","canonicalUrl":"https://aoctrl.com/siemens/5SP3725-2KK01","factsUrl":"https://aoctrl.com/api/mcp/products/5SP3725-2KK01","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SP3725-2KK01, 1-pole, 25 A rated, E tripping characteristic, 25 kA breaking capacity per EN 60898, busbar mount.","salesMarkdown":"The Siemens SENTRON 5SP3725-2KK01 is a 1-pole miniature circuit breaker rated 25 A with an E tripping characteristic and a 25 kA breaking capacity per EN 60898. It mounts via busbar fastening and occupies 1.5 modular width units on the DIN rail. ## Key ratings — what they mean for the panel Rated 25 A at 30 °C, this breaker handles the full 25 A in a typical panel environment. At elevated temperatures, it derates linearly: 23.75 A at 40 °C, 22.5 A at 50 °C, and 21.875 A at 55 °C — important to check if the breaker sits near other heat sources in a crowded enclosure. The 25 kA breaking capacity at 230 V AC (per EN 60898) means it can safely interrupt a fault current up to 25,000 A without welding contacts or exploding. Insulation voltage is rated 690 V, surge voltage resistance is 6 kV, and overvoltage category is IV — this breaker is built for the main distribution point where the utility feed comes in, not just sub-panels. Pollution degree 3 means it tolerates conductive dust and occasional condensation, which is typical for meter cabinets and outdoor-rated enclosures. ## Integration into the meter panel Busbar-mounted, 1.5 MW wide — that's 27 mm on a standard DIN rail. Accepts solid or stranded copper up to 50 mm², minimum 2.5 mm². The enclosure depth is 76.3 mm; overall depth including terminals is 89.5 mm. Height is 151.3 mm. IP40 with conductors connected. Sealable with a locking slide, wire seal, cable ties, or Antilux — required by many utility metering codes to prevent tampering. Infeed is via box terminal at the bottom; outgoing feeder uses a spring-loaded terminal.","metaTitle":"Siemens SENTRON 5SP3725-2KK01 MCB, 1P, 25A, E-Char, 25kA","metaDescription":"Siemens SENTRON 5SP3725-2KK01 miniature circuit breaker, 1-pole, 25 A, E-tripping characteristic, 25 kA breaking capacity per EN 60898. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"89.5 mm","title":"5SP3725-2KK01","Height":"151.3 mm","Maximum":"70 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"25 kA","description":"Main miniature circuit breaker (SHU), 1-pole, E25A L1, 230/400 V","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","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","according to 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","according to IEC 81346-2":"F","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":"1.5","Tripping Characteristic Class":"E","Position / Of Power Supply Cord":"Stipulated by installation in the lower section of the meter panel","according to EN 60898 / rated value":"25 kA","supply voltage / at AC / rated value":"230 V","insulation voltage (Ui) / rated value":"690 V","Surge Voltage Resistance / Rated Value":"6 kV","Outgoing Feeder Via Spring-Loaded Terminal":"Yes","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/394f1b21bf3b19da04ec695c7abca390.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=136060&mlfb=5SP3725-2KK01"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SP3725-2KK01?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels."},{"question":"What is the breaking capacity of 5SP3725-2KK01?","answer":"Rated 25 kA at 230 V AC per EN 60898, and also rated 25 kA per EN 60898 as a general value. That's the interrupting rating — it safely clears faults up to that current."},{"question":"What conductor sizes does 5SP3725-2KK01 accept?","answer":"Solid or stranded copper from 2.5 mm² minimum up to 50 mm² maximum. The incoming box terminal and outgoing spring-loaded terminal both handle that range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP3725-2KK01","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/5SP3725-2KK01 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}}