{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4308-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4308-8","canonicalUrl":"https://aoctrl.com/siemens/5SL4308-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4308-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4 miniature circuit breaker, 3-pole, 8 A rated current, D tripping characteristic, 10 kA breaking capacity, 400 V AC, 3 width units.","salesMarkdown":"The Siemens 5SL4308-8 is a 3-pole miniature circuit breaker from the SENTRON 5SL4 series, rated at 8 A with a D tripping characteristic. It breaks fault currents up to 10 kA per EN 60898 and IEC 60947-2, which means it can safely interrupt high-energy short circuits in residential and infrastructure distribution boards without cascading upstream. D-curve tripping means the breaker holds through inrush currents up to 10–14× rated current — sized for motor-starting loads on pumps, compressors, or conveyor drives where a B- or C-curve would nuisance-trip on the inductive kick. At 8 A rated current, it protects a 3-phase motor circuit drawing roughly 4 kW on a 400 V supply. Three width units at 54 mm wide snap onto standard DIN rail. Depth of 76 mm and installation depth of 70 mm mean it fits flush in a 100 mm deep enclosure with room for gland plates and wiring. Terminal capacity accepts solid or stranded conductors from 0.75 to 25 mm², covering most branch-circuit wiring sizes.","metaTitle":"Siemens 5SL4308-8 SENTRON MCB, 3P, 8A, D Curve, 10kA","metaDescription":"Siemens 5SL4308-8 SENTRON 5SL4 miniature circuit breaker, 3-pole, 8 A, D tripping characteristic, 10 kA breaking capacity per EN 60898. Active production. 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 mm","Solid":"0.75 ... 25 mm²","Width":"54 mm","title":"5SL4308-8","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","description":"Miniature circuit breaker 400 V 10kA, 3-pole, D, 8A","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"3","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Design of the product":"5SL miniature circuit breakers","Energy limiting class":"3","Number of width units":"3","Number of poles / Note":"3P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SL4","Suitability for operation":"Residential buildings/infrastructure","Current / at AC / rated value":"8 A","Tripping characteristic class":"D","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"10 kA","acc. to IEC 60947-2 / rated value":"10 kA","Product feature / Touch protection":"Yes","Supply voltage / at AC / rated value":"400 V","Influence of the surrounding temperature":"+55 °C, max. 95% humidity","with multi-phase operation / at AC / maximum":"440 V","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 V","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5b69e2d7e81e2f42b38e770e8cc909de.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=396412&mlfb=5SL4308-8"},"ai":{"faq":[{"question":"Where can I buy 5SL4308-8 and how do I get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."},{"question":"What is the depth of 5SL4308-8?","answer":"Depth is 76 mm; installation depth behind the panel is 70 mm."},{"question":"What wire sizes does 5SL4308-8 accept?","answer":"Terminals accept solid and stranded conductors from 0.75 to 25 mm²."},{"question":"Will 5SL4308-8 drop into a panel specified around 5SL4363-7 without rewiring?","answer":"Both are 3-pole SENTRON 5SL4 breakers on the same DIN-rail footprint and terminal range, so mechanical fit is identical. The difference is the tripping curve: 5SL4308-8 is D-curve (8 A), while 5SL4363-7 is a different rating — verify the load's inrush profile before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4308-8","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/5SL4308-8 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}}