{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP3850-2XX32","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP3850-2XX32","canonicalUrl":"https://aoctrl.com/siemens/5SP3850-2XX32","factsUrl":"https://aoctrl.com/api/mcp/products/5SP3850-2XX32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SP3 series, 5SP3850-2XX32 main miniature circuit breaker, 3-pole, 50 A rated current, E tripping characteristic, 25 kA breaking capacity per EN 60898, 400 V AC, 50 Hz.","salesMarkdown":"The Siemens 5SP3850-2XX32 is a SENTRON 5SP3 main miniature circuit breaker — a 3-pole, 50 A unit with an E tripping characteristic and a 25 kA breaking capacity rated per EN 60898. It's designed to mount on a 40-mm busbar system per DIN 43870 Part 2, inside a meter cabinet or residential/infrastructure panel. The E curve (tripping characteristic class E) is a specific SENTRON offering — it sits between a standard C curve and a K curve in magnetic trip threshold, designed for transformer or motor-start loads that need a higher inrush headroom without going to a full motor-protective breaker. Terminals accept solid or stranded conductors from 2.5 mm² up to 50 mm² — that's a wide range, covering everything from a 2.5 mm² lighting circuit tail up to a 50 mm² main feeder. The box-terminal infeed and spring-loaded outgoing terminals make wiring straightforward in a meter-panel layout. That means it's rated for the main distribution point, not just sub-panel duty. Mechanical service life is 20 000 switching cycles typical. The switch-position indicator shows OFF = green, ON = red. ## Integration notes Mounts on a 40-mm busbar system per DIN 43870 Part 2, inside a meter cabinet. The design is a main miniature circuit breaker (SHU) — 3 x 1-pole units ganged, occupying 4.5 width units. The locking slide accepts a padlock, wire seal, cable ties, or Antilux seal for utility-meter security. The power supply cord position is stipulated for installation in the lower section of the meter panel.","metaTitle":"Siemens 5SP3850-2XX32 SENTRON MCB, 3P 50A E-Curve 25kA","metaDescription":"Siemens 5SP3850-2XX32 SENTRON miniature circuit breaker, 3-pole, 50 A, E tripping characteristic, 25 kA breaking capacity per EN 60898. Active production. Quoted to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Solid":"2.5 ... 50 mm²","Maximum":"440 V","Minimum":"110 V","Sealable":"Yes","Stranded":"2.5 ... 50 mm²","Rated Value":"25 kA","Mounting type":"Busbar","During Storage":"-40 ... +70 °C","Number of poles":"3","lifecycle_stage":"current","Shock resistance":"30 g, at least 3 impacts, impact duration 11 ms","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °C","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":"4.5","Infeed at box terminal":"Yes","Number of poles / Note":"3P","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":"400 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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=523715&mlfb=5SP3850-2XX32","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SP3850-2XX32/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SP3850-2XX32 and get a price?","answer":"We source and quote the 5SP3850-2XX32 to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote."},{"question":"What is the solid/stranded wire range for the 5SP3850-2XX32?","answer":"The terminals accept solid and stranded conductors from 2.5 mm² up to 50 mm²."},{"question":"Will the 5SP3850-2XX32 drop into a panel specified around the 3VA1020-3ED36-0AA0?","answer":"No — the 5SP3850-2XX32 is a 3-pole main miniature circuit breaker on a 40-mm busbar system (DIN 43870), while the 3VA1020-3ED36-0AA0 is a molded-case circuit breaker with different mounting and terminal arrangements. They are not drop-in interchangeable; rewiring and possibly a different enclosure are required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP3850-2XX32","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/5SP3850-2XX32 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}