{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7505-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7505-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7505-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7505-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7505-8, miniature circuit breaker, 2-pole (1P+N), D characteristic, 0.5 A rated current, 15 kA (EN 60898) / 50 kA (IEC 60947-2) breaking capacity, IP20.","salesMarkdown":"## What the ratings mean for fit The Siemens 5SY7505-8 is a 2-pole (1P+N) SENTRON miniature circuit breaker with a D tripping characteristic, rated 0.5 A at 35 °C. The D curve means it tolerates high inrush currents — typically used for motor, transformer, or lighting loads where the start-up surge would trip a B or C curve breaker. The 0.5 A rating is the continuous current at 35 °C; at 60 °C it derates to 0.4 A, so if the breaker lives in a warm enclosure, size up accordingly. Breaking capacity is 15 kA per EN 60898 and 50 kA per IEC 60947-2. The 50 kA figure under IEC 60947-2 is the industrial rating — it tells you this breaker can clear a fault up to 50 kA at the supply terminals without welding its contacts. That matters when the available fault current at the panel is high; the 15 kA EN 60898 rating is the domestic/commercial benchmark. Overvoltage category III and pollution degree 3 mean it's rated for fixed installation in distribution boards, not for plug-in portable use. ## Deployment context and integration Snap-on mounting for DIN rail, 2 modular width units (36 mm wide). The 76 mm depth and 70 mm installation depth mean it sits flush in a standard distribution board — no extra clearance needed behind the rail. Mounting position is any, so it's fine in vertical or horizontal panel layouts. The combined top and bottom terminals accept wiring from either side, which saves time when daisy-chaining busbars. IP20 with connected conductors — protected against finger contact but not against water. That's standard for indoor distribution boards. The sealable feature (padlockable toggle) lets you lock the breaker in the off position for lockout/tagout during maintenance.","metaTitle":"Siemens 5SY7505-8 SENTRON MCB, 2-Pole, D Curve, 0.5 A, 15 kA","metaDescription":"Siemens 5SY7505-8 SENTRON miniature circuit breaker, 2-pole 1P+N, D tripping characteristic, rated 0.5 A at 35 °C, breaking capacity 15 kA per EN 60898. Current production. Sourced","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SY7505-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230 V 15kA, 1+N-pole, D, 0.5 A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"2","Type Of Voltage":"AC","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","Number Of Poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","at 35 °C / rated value":"0.5 A","at 40 °C / rated value":"0.47 A","at 45 °C / rated value":"0.45 A","at 50 °C / rated value":"0.44 A","at 55 °C / rated value":"0.42 A","at 60 °C / rated value":"0.4 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":"15 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"50 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 Function / 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 (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f0641099c0dd03bc561fddef13bc659c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=496607&mlfb=5SY7505-8"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY7505-8?","answer":"Submit an RFQ through this listing. The part is sourced to order via independent distribution; pricing and stock are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7505-8","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/5SY7505-8 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}}