{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4501-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4501-8","canonicalUrl":"https://aoctrl.com/siemens/5SY4501-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4501-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4501-8 miniature circuit breaker, 2-pole, D tripping characteristic, 1 A rated at 35 °C, 10 kA (EN 60898) / 35 kA (IEC 60947-2).","salesMarkdown":"## Siemens 5SY4501-8 — 2-pole D-curve MCB, 1 A, industrial breaking capacity The Siemens 5SY4501-8 is a 2-pole miniature circuit breaker from the SENTRON range, with a D tripping characteristic and a rated current of 1 A at 35 °C. It delivers a breaking capacity of 10 kA per EN 60898 and 35 kA per IEC 60947-2 — the higher figure applies when the breaker is used in industrial distribution per the latter standard, giving real headroom for fault-current coordination in a panel. The D curve (10–20× In trip) suits loads with high inrush, like small transformers, solenoid banks, or motor starters. Rated current derates with ambient temperature: 0.95 A at 40 °C, 0.9 A at 50 °C, and 0.85 A at 60 °C — so if the panel runs hot, size up one step. It mounts in any position on a DIN rail (2 modular width units, 36 mm wide), with a depth of 76 mm and an installation depth of 70 mm. The quick-assembly fastening system and combined top/bottom terminals simplify panel wiring. The 5SY4501-8 is an active, current-production part.","metaTitle":"Siemens 5SY4501-8 SENTRON MCB, 2-pole D-curve, 1 A, 10/35 kA","metaDescription":"Siemens 5SY4501-8 SENTRON miniature circuit breaker, 2-pole, D tripping characteristic, 1 A rated at 35 °C, 10 kA (EN 60898) / 35 kA (IEC 60947-2). Current production. Sourced and","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"2","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":"230 V","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":"1 A","at 40 °C / rated value":"0.95 A","at 45 °C / rated value":"0.93 A","at 50 °C / rated value":"0.9 A","at 55 °C / rated value":"0.88 A","at 60 °C / rated value":"0.85 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"2","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","Supply Voltage Frequency / Rated Value":"50/60 Hz","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","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","operating voltage / at DC / rated value / maximum":"72 V","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f844ef9f1343943bf9dc057789169490.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=449913&mlfb=5SY4501-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4501-8/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY4501-8 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 5SY4501-8?","answer":"10 kA per EN 60898 and 35 kA per IEC 60947-2 at 230/400 V AC. At DC per IEC 60947-2 it is rated 15 kA; under UL 1077 / CSA C22.2 No.235 it is 5 kA."},{"question":"Will 5SY4501-8 drop into a panel specified around 5SY4301-7CV?","answer":"Both are 2-pole SENTRON MCBs with the same width (36 mm) and mounting position (any), so they share the same DIN-rail footprint and terminal layout. The 5SY4301-7CV is a C-curve variant; the D-curve 5SY4501-8 is the direct functional swap for loads with higher inrush. No rewiring needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4501-8","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/5SY4501-8 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}