{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP3320-3","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP3320-3","canonicalUrl":"https://aoctrl.com/siemens/5SP3320-3","factsUrl":"https://aoctrl.com/api/mcp/products/5SP3320-3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SP3320-3, 3-pole, 20 A rated at 400 V AC, 25 kA breaking capacity per EN 60898, type E characteristic, 4.5 MWUs, depth 76.3 mm.","salesMarkdown":"The Siemens SENTRON 5SP3320-3 is a 3-pole miniature circuit breaker (MCB) rated 20 A at 400 V AC, with a 25 kA breaking capacity per EN 60898. It carries the type E tripping characteristic — a delayed curve that handles inrush from transformers or motor starters without nuisance trips, while still clearing a hard short fast. Rated 20 A at 30 °C, the breaker derates to 19 A at 40 °C, 18.5 A at 45 °C, and 18 A at 50 °C. Insulation voltage rated at 690 V, overvoltage category IV, pollution degree 3. That's the heavy-duty end of the residential/infrastructure spec — suitable for main distribution panels where the breaker sits close to the utility transformer and sees dirty power. Occupies 4.5 modular width units — a bit wider than a standard 3-pole MCB (usually 3 MWUs), so check your DIN rail space before committing. Depth is 76.3 mm; height 128 mm. Accepts solid or stranded wire up to 50 mm², minimum 2.5 mm². Saddle terminals and box-terminal infeed are standard. IP40 with conductors connected; sealable with an integrated locking slide that accepts a lock, wire seal, or cable ties. Listed as current production. No end-of-life notice or successor has been issued.","metaTitle":"Siemens SENTRON 5SP3320-3 MCB, 20 A, 3-Pole, 25 kA, Type E","metaDescription":"Siemens SENTRON 5SP3320-3 miniature circuit breaker, 20 A rated at 400 V AC, 3-pole, 25 kA breaking capacity per EN 60898, type E characteristic. Active production. Sourced to orde","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76.3 mm","title":"5SP3320-3","Height":"128 mm","Maximum":"70 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"25 kA","description":"Main miniature circuit breaker (SHU), 3-pole, E 20, 400V","Number Of Poles":"3","Solid / Maximum":"50 mm²","Solid / Minimum":"2.5 mm²","lifecycle_stage":"current","Fastening Method":"standard rail","Saddle Terminals":"Yes","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":"20 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":"3P","acc. to DIN EN 61346-2":"F","at 30 °C / rated value":"20 A","at 40 °C / rated value":"19 A","at 45 °C / rated value":"18.5 A","at 50 °C / rated value":"18 A","at 55 °C / rated value":"17.5 A","Depth / Of The Enclosure":"76.3 mm","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","Number Of Modular Width Units":"4.5","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","Surge Voltage Resistance / Rated Value":"6 kV","Fastening Method / 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 (Operating Cycles) / Typical":"20 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/667b6cad2a0ca4ddfb9912b9ec5a9580.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=328939&mlfb=5SP3320-3"},"ai":{"faq":[{"question":"Where can I buy the 5SP3320-3 and get a price?","answer":"The part is sourced 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 breaking capacity of the 5SP3320-3?","answer":"25 kA at 400 V AC per EN 60898, and also rated 25 kA as a rated value per the spec table."},{"question":"What wire sizes does the 5SP3320-3 accept?","answer":"Solid or stranded: minimum 2.5 mm², maximum 50 mm². Saddle terminals and box-terminal infeed are standard."},{"question":"Does the 5SP3320-3 drop into a panel specified around a 5SJ6325-7RC without rewiring?","answer":"No — the 5SP3320-3 is a 3-pole type E MCB on a 4.5 MWU footprint, while the 5SJ6325-7RC is a different series. Panel space and tripping characteristic differ; verify fit before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP3320-3","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/5SP3320-3 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}}