{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4305-5","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4305-5","canonicalUrl":"https://aoctrl.com/siemens/5SY4305-5","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4305-5","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4 series, miniature circuit breaker, 3-pole, 0.5 A rated current, tripping characteristic A, 400 V AC, 10 kA (EN 60898) / 35 kA (IEC 60947-2) breaking capacity.","salesMarkdown":"## Siemens 5SY4305-5 — 0.5 A SENTRON MCB, Characteristic A, 3-Pole The Siemens 5SY4305-5 is a 3-pole miniature circuit breaker from the SENTRON 5SY4 series, rated at 0.5 A with tripping characteristic A. It is designed for 400 V AC systems and provides a breaking capacity of 10 kA per EN 60898 and 35 kA per IEC 60947-2, with a DC rating of 15 kA per IEC 60947-2 and 5 kA per UL 1077 / CSA C22.2 No.235. The IP20 rating applies with connected conductors; the enclosure is sealable and halogen- and silicon-free, suited for controlled industrial environments. ## Integration & Compliance Compliance documentation available includes the EN 60898 and IEC 60947-2 certifications for breaking capacity, plus UL 1077 and CSA C22.2 No.235 listing for North American acceptance. The part is halogen-free and silicon-free, supporting RoHS/REACH alignment typical of Siemens SENTRON components.","metaTitle":"Siemens 5SY4305-5 SENTRON MCB, 0.5 A, 3-Pole, Char A","metaDescription":"Siemens 5SY4305-5 SENTRON miniature circuit breaker, 0.5 A rated, 3-pole, tripping characteristic A, 10 kA (EN 60898) / 35 kA (IEC 60947-2) breaking capacity. Current lifecycle sta","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SY4305-5","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 400 V 10kA, 3-pole, A, 0.5 A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","Number of poles":"3","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":"400 V","Overvoltage category":"III","Combined Terminal Top":"Yes","Number of width units":"3","Number of poles / Note":"3P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SY4","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"0.5 A","Tripping characteristic class":"A","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"35 kA","Product feature / Touch protection":"Yes","Influence of the surrounding temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at DC / acc. to IEC 60947-2 / rated value":"15 kA","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-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/1c0a5fb9959e747562487e4b9b292ac2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=516486&mlfb=5SY4305-5"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4305-5?","answer":"The 5SY4305-5 has a breaking capacity of 10 kA per EN 60898, 35 kA per IEC 60947-2 at 400 V AC, 15 kA per IEC 60947-2 at DC, and 5 kA per UL 1077 / CSA C22.2 No.235."},{"question":"What does tripping characteristic A mean for this MCB?","answer":"Characteristic A means the 5SY4305-5 trips instantaneously at 2–3× rated current (0.5 A), providing very fast short-circuit protection for sensitive loads like semiconductor circuits or long cable runs where low let-through energy is required."},{"question":"Where can I buy 5SY4305-5 and get current pricing?","answer":"The 5SY4305-5 is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability confirmation."},{"question":"What compliance certifications does 5SY4305-5 carry?","answer":"The 5SY4305-5 is certified to EN 60898, IEC 60947-2, UL 1077, and CSA C22.2 No.235. It is halogen-free and silicon-free, supporting RoHS/REACH compliance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4305-5","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/5SY4305-5 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}}