{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP3340-3","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP3340-3","canonicalUrl":"https://aoctrl.com/siemens/5SP3340-3","factsUrl":"https://aoctrl.com/api/mcp/products/5SP3340-3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SP3, miniature circuit breaker, 5SP3340-3, 40 A, 3-pole, 25 kA, tripping characteristic E, 400 V AC, 50 Hz.","salesMarkdown":"The Siemens 5SP3340-3 is a 3-pole SENTRON miniature circuit breaker (MCB) rated 40 A at 400 V AC, 50 Hz, with a 25 kA breaking capacity per EN 60898. Its tripping characteristic E is designed for motor and transformer circuits where inrush currents exceed the B or C curve — it holds through short-duration surges without nuisance tripping, then clears fast on a hard fault. Overvoltage category IV means it's rated for the service entrance, not just downstream subpanels. ## Lockout/tagout — this one has it built in The 5SP3340-3 has an integrated locking slide that accepts a padlock, wire seal, or cable tie. That means positive mechanical isolation — the handle can be locked in the OFF position. No exceptions. If you're specifying for a LOTO program, this saves you from having to add an external lockable handle or a separate disconnect. The switch position indicator shows green for OFF, red for ON — no ambiguity when you're verifying isolation. Takes up 4.5 width units — plan your enclosure fill accordingly. Infeed can be at the box terminal, and the supply cord position is any orientation — no top-feed restriction. Depth is 76.3 mm, height 128 mm. IP40 with conductors connected, so it's suited for dry indoor panels, not washdown zones. Survives 30 g shock (11 ms, 3 impacts minimum) and 2 g vibration per IEC 60068-2-6 (20 cycles, 5 to 150 Hz). Surge voltage withstand is 6 kV, insulation voltage 690 V. This is a robust part for industrial panel environments — not just residential.","metaTitle":"Siemens 5SP3340-3 SENTRON MCB, 40A, 3P, 25kA, Char E","metaDescription":"Siemens 5SP3340-3 SENTRON miniature circuit breaker, 40 A, 3-pole, 25 kA breaking capacity, tripping characteristic E, 400 V AC, 50 Hz. Current lifecycle stage. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76.3 mm","Solid":"2.5 ... 50 mm²","title":"5SP3340-3","Height":"128 mm","Maximum":"440 V","Minimum":"110 V","Sealable":"Yes","Stranded":"2.5 ... 50 mm²","Rated Value":"25 kA","description":"Main miniature circuit breaker (SHU), 3-pole, E 40, 400V","Mounting type":"standard rail","During Storage":"-40 ... +70 °C","Number of poles":"3","lifecycle_stage":"current","Saddle Terminals":"Yes","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":"Integrated locking slide, lockable by means of a lock, wire seal and cable ties","Current / at AC / rated value":"40 A","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","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/3cc97a88c1d177254cbe5473dafae213.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=275906&mlfb=5SP3340-3"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SP3340-3?","answer":"25 kA rated value per EN 60898 at 400 V AC."},{"question":"Does the 5SP3340-3 have a lockable handle for LOTO?","answer":"Yes. It has an integrated locking slide that accepts a padlock, wire seal, or cable tie for positive mechanical isolation."},{"question":"Where can I buy 5SP3340-3 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What wire sizes does 5SP3340-3 accept?","answer":"Solid or stranded copper from 2.5 mm² up to 50 mm², with saddle terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP3340-3","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/5SP3340-3 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}}