{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP3750-2KK02","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP3750-2KK02","canonicalUrl":"https://aoctrl.com/siemens/5SP3750-2KK02","factsUrl":"https://aoctrl.com/api/mcp/products/5SP3750-2KK02","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SP3 series, main miniature circuit breaker (SHU), 1-pole, 50 A, E tripping characteristic, 25 kA breaking capacity, 230/400 V AC, busbar mount.","salesMarkdown":"The Siemens 5SP3750-2KK02 is a 1-pole main miniature circuit breaker (SHU) from the SENTRON 5SP3 family, rated 50 A at 230 V AC with an E tripping characteristic and a 25 kA breaking capacity per EN 60898. It is designed for busbar mounting on a 40 mm system per DIN 43870 Part 2, typically installed in the lower section of a meter panel for residential or infrastructure service-entrance duty. The E tripping curve is a specialty characteristic between B and C, designed for selective coordination with upstream fuses or breakers in utility metering applications; it holds through moderate overloads but trips fast on short circuits. Overvoltage category IV and a 6 kV surge voltage rating confirm it is rated for the mains entry point, not just downstream distribution. Mounts on a 40 mm busbar system per DIN 43870 Part 2, not a standard DIN rail — verify your meter panel has the correct busbar pitch. The breaker occupies 1.5 width units and measures 151.3 mm high by 89.5 mm deep; enclosure depth is 76.3 mm. Infeed is via box terminal; outgoing feeder uses a spring-loaded terminal. Sealable with a locking slide accepting padlocks, wire seals, cable ties, or Antilux. ## Environmental and mechanical specs Rated IP40 with connected conductors. Ambient temperature range -40 to +70 °C. Shock resistance 30 g, 3 impacts at 11 ms; vibration resistance 2 g per IEC 60068-2-6. Mechanical service life 20 000 switching cycles. Switch position indicator shows OFF = green, ON = red.","metaTitle":"Siemens 5SP3750-2KK02 SENTRON MCB, 1P, 50 A, E-Curve, 25 kA","metaDescription":"Siemens 5SP3750-2KK02 SENTRON miniature circuit breaker, 1-pole, 50 A, E tripping characteristic, 25 kA breaking capacity per EN 60898. Busbar mount, IP40. Quoted 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":"5SP3750-2KK02","Height":"151.3 mm","Maximum":"70 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"25 kA","description":"Main miniature circuit breaker (SHU), 1-pole, E50A L2, 230/400 V","Mounting type":"Busbar","Number of poles":"1","lifecycle_stage":"current","Shock resistance":"30 g, at least 3 impacts, impact duration 11 ms","Product brand name":"SENTRON","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":"1.5","Infeed at box terminal":"Yes","Number of poles / Note":"1P","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":"Locking slide with lock, additional wire seal, cable ties and Antilux","Current / at AC / rated value":"50 A","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","Supply voltage frequency / rated value":"50 Hz","Surge voltage resistance / rated value":"6 kV","Mounting type / other installation / Note":"On 40-mm busbar system in compliance with DIN 43870 Part 2","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/8cb821f621fb556362d8a2467e39ecd9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=429490&mlfb=5SP3750-2KK02"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SP3750-2KK02?","answer":"25 kA rated breaking capacity per EN 60898, with a 6 kV surge voltage rating and overvoltage category IV."},{"question":"Does 5SP3750-2KK02 mount on DIN rail or busbar?","answer":"Busbar mounting only — on a 40 mm system per DIN 43870 Part 2. It does not snap onto standard DIN rail."},{"question":"What is the E tripping characteristic used for?","answer":"The E curve is a specialty characteristic between B and C, designed for selective coordination with upstream fuses or utility meters in service-entrance applications."},{"question":"Where can I buy 5SP3750-2KK02 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP3750-2KK02","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/5SP3750-2KK02 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}}