{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4520-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4520-8","canonicalUrl":"https://aoctrl.com/siemens/5SL4520-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4520-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4 series, 5SL4520-8 miniature circuit breaker, 20 A, D characteristic, 10 kA, 1P+N, 230 V AC.","salesMarkdown":"It is a 1P+N unit — switching the live pole and switching the neutral — rated 230 V AC (250 V AC in single-phase operation), with a 10 kA breaking capacity per both EN 60898 and IEC 60947-2. 20 A continuous rating and 10 kA SCCR at 230/250 V AC define the fault-clearing capability. Energy limiting class 3 means it restricts let-through energy during a fault — less stress on downstream wiring and connected equipment compared to class 1 or 2 breakers. The 1P+N configuration with neutral switching is common in single-phase final subcircuits where isolating both poles is required by local wiring rules; the neutral pole is not overcurrent-protected, only switched. Screw terminals accept 0.75–25 mm² solid or stranded copper; tighten to 2.5–3 N·m. Mounting position any orientation; ambient range –25 to +55 °C, storage –40 to +75 °C. IP20 with conductors connected — suitable for enclosed distribution boards only, not for wet or dust-exposed locations.","metaTitle":"Siemens 5SL4520-8 SENTRON MCB, 20 A, D Curve, 10 kA, 1P+N","metaDescription":"Siemens 5SL4520-8 SENTRON miniature circuit breaker, 20 A rated, D tripping characteristic, 10 kA breaking capacity per EN 60898, 1P+N, 230 V AC. Current lifecycle stage. Available","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 25 mm²","Width":"36 mm","title":"5SL4520-8","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","description":"Miniature circuit breaker 230 V 10kA, 1+N-pole, D, 20 A","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"2","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":"2","Number of poles / Note":"1P+N","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":"20 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":"230 V","Influence of the surrounding temperature":"+55 °C, max. 95% humidity","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Product function / neutral conductor switching":"Yes","with single-phase operation / at AC / rated value":"250 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/f85ffff0bcbdedee6c573e435474e89b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=348543&mlfb=5SL4520-8"},"ai":{"faq":[{"question":"What is the depth of the 5SL4520-8?","answer":"Overall depth is 76 mm; installation depth (behind the panel face) is 70 mm."},{"question":"What wire sizes does the 5SL4520-8 accept?","answer":"Screw terminals accept 0.75 to 25 mm² solid or stranded copper conductors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4520-8","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/5SL4520-8 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}}