{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4605-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4605-8","canonicalUrl":"https://aoctrl.com/siemens/5SY4605-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4605-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SY4605-8, D-characteristic, 0.5 A rated current, 4-pole (3P+N), 10 kA breaking capacity per EN 60898, 35 kA per IEC 60947-2.","salesMarkdown":"## SENTRON 5SY4605-8 — D-curve 0.5 A MCB, 4-pole The Siemens 5SY4605-8 is a SENTRON-series miniature circuit breaker with a D tripping characteristic, rated 0.5 A at AC, across 4 poles configured as 3P+N. ## Breaking capacity and derating Rated breaking capacity is 10 kA per EN 60898 and 35 kA per IEC 60947-2 at AC; at DC the IEC 60947-2 rating drops to 15 kA. Those numbers govern where this breaker can be installed — the 10 kA EN rating covers standard domestic/commercial distribution, while the 35 kA IEC rating qualifies it for industrial panel applications with higher prospective fault current. Temperature derating is published: at 40 °C the 0.5 A rating holds at 0.48 A, at 50 °C it's 0.45 A, at 60 °C it's 0.42 A. ## Panel integration Combined terminals top and bottom; touch protection is included. Sealable for lockout/tagout compliance.","metaTitle":"Siemens 5SY4605-8 SENTRON MCB, D-Curve 0.5A 4-Pole 10kA","metaDescription":"Siemens 5SY4605-8 SENTRON MCB, D-curve 0.5A, 4-pole (3P+N), 10kA breaking capacity per EN 60898. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SY4605-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 3+N-pole, D, 0.5 A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P+N","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"0.5 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","acc. to DIN EN 61346-2":"F","at 35 °C / rated value":"0.5 A","at 40 °C / rated value":"0.48 A","at 45 °C / rated value":"0.46 A","at 50 °C / rated value":"0.45 A","at 55 °C / rated value":"0.44 A","at 60 °C / rated value":"0.42 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"4","Tripping Characteristic Class":"D","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","Type Of Voltage / Of The Operating Voltage":"AC","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Component / Neutral Conductor Switching":"Yes","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 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/2a803998d2f6f2a22e3a96249dabd456.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=150672&mlfb=5SY4605-8"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4605-8?","answer":"10 kA per EN 60898, 35 kA per IEC 60947-2 at AC, and 15 kA per IEC 60947-2 at DC. The higher IEC rating qualifies it for industrial panel applications."},{"question":"What is the D-curve on this MCB for?","answer":"The D characteristic (tripping between 10x and 20x In) handles high inrush loads like motors, transformers, and welding equipment without nuisance tripping on startup."},{"question":"Will 5SY4605-8 drop into a panel specified around 5SY4301-7CV?","answer":"Both are SENTRON 4-pole MCBs in the same 4-MW footprint, but 5SY4301-7CV is a C-curve 1 A variant. The 5SY4605-8 is a D-curve 0.5 A — different tripping characteristic and rating. Physical fit is the same; circuit protection parameters differ."},{"question":"Where can I buy 5SY4605-8?","answer":"Sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm position."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4605-8","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/5SY4605-8 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}}