{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4520-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4520-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY4520-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4520-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4520-7CC miniature circuit breaker, 1P+N, 20 A, C characteristic, 10 kA (IEC 60898), 230 V AC, 72 V DC, 2-module width, quick-assembly mounting.","salesMarkdown":"It switches both phase and neutral, so a single 2-module unit covers the branch circuit without a separate neutral disconnect — useful in panels where space is tight and you want to isolate the neutral alongside the line conductor. Rated 230 V AC with a 10 kA breaking capacity per EN 60898, and 5 kA per UL 1077 and CSA C22.2 No. 235. That dual rating means it qualifies for IEC-based distribution boards and for UL 508A industrial control panels — one SKU covers both standards if your panel shop ships to North America and Europe. C-curve (5–10× In) trips fast on motor inrush or transformer magnetizing current without nuisance tripping on moderate overloads — the standard choice for mixed resistive and light inductive loads in mechanical engineering and industry panels. ## DC rating and single-phase note Maximum DC voltage is 72 V. For single-phase AC operation the rated voltage steps up to 250 V. Depth is 76 mm overall, installation depth 70 mm — the extra 6 mm is the front projection of the toggle and terminal covers. Width is 36 mm (2 width units at 18 mm each), which is standard for a 1P+N MCB in a Siemens SENTRON sub-distribution board. Touch protection is built in — no exposed live metal when wired. Neutral conductor switching is integral — the neutral pole opens and closes with the phase pole, so the breaker can be used as the main disconnect for a single-phase sub-feed where local codes require neutral isolation.","metaTitle":"Siemens 5SY4520-7CC SENTRON MCB, 20 A, C-curve, 1P+N","metaDescription":"Siemens 5SY4520-7CC SENTRON miniature circuit breaker, 20 A, C tripping characteristic, 1P+N, 10 kA IEC breaking capacity, 5 kA UL 1077. Current lifecycle. Sourced to order against","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SY4520-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 230 V 10kA, 1+N-pole, C, 20A","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","Number of poles":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Degree of pollution":"3","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","at AC / rated value":"230 V","Overvoltage category":"III","Combined Terminal Top":"Yes","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","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SY4CC","Suitability for operation":"Mechanical engineering / industry","Tripping characteristic class":"C","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","Position / of power supply cord":"Any","Product feature / Touch protection":"Yes","Operating current / at AC / rated value":"20 A","Influence of the surrounding temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","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/12235f0e6c9ab3bcfdbec7976763abca.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=423026&mlfb=5SY4520-7CC"},"ai":{"faq":[{"question":"Will 5SY4520-7CC drop into a panel specified around 5SY3132-6 without rewiring?","answer":"Physical footprint is identical — both are 2-module (36 mm wide) DIN-rail mount. The 5SY4520-7CC has combined terminals top and bottom, same as the 5SY3132-6, so the wiring layout does not change. The only difference is the neutral switching: if the existing panel uses a separate neutral bus, the 5SY4520-7CC's neutral pole is an added function that does not require re-termination of the neutral conductor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4520-7CC","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/5SY4520-7CC 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}}