{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8501-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8501-8","canonicalUrl":"https://aoctrl.com/siemens/5SY8501-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8501-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY8501-8 miniature circuit breaker, 1 A, D characteristic, 2-pole (1P+N), 70 kA breaking capacity at 230 V AC, 15 kA DC, IP20, halogen-free.","salesMarkdown":"The 2-pole (1P+N) construction includes neutral conductor switching, so it fully isolates the load when tripped. The D-curve trips at 10–20× rated current, so on a 1 A breaker you get a magnetic trip between 10 A and 20 A. That makes it the right choice for a 1 A motor or a small transformer primary where the inrush would punch through a C-curve. At DC, it's rated 15 kA up to 72 V, so it also works in DC auxiliary circuits. The 5 kA rating per UL 1077 and CSA C22.2 No.235 covers North American acceptance. The 2-pole (1P+N) format with neutral switching means the neutral is opened and closed with the line pole, not just a solid link. That's required for TN-S or TT systems where you want full isolation on the load side. The breaker occupies 2 modular width units (36 mm) on a DIN rail, with a 76 mm depth and 70 mm installation depth — fits standard 80 mm deep enclosures. ## Environmental and compliance profile Rated for ambient temperatures from -40 °C to 75 °C, with derating above 55 °C per the humidity table (95% RH at 55 °C, 55% at 70 °C, 35% at 75 °C). Halogen-free and silicon-free construction suits clean environments like semiconductor fabs or food processing. Sealable with a lockable cover to prevent tampering.","metaTitle":"Siemens 5SY8501-8 SENTRON MCB, 1 A, D Curve, 2-Pole, 70 kA","metaDescription":"Siemens 5SY8501-8 SENTRON miniature circuit breaker, 1 A rated, D tripping characteristic, 2-pole (1P+N), 70 kA breaking capacity at 230 V AC, 15 kA DC. IP20, halogen-free, current","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":"5SY8501-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230 V D=70 mm 25 kA according to EN 60947-2, 1P+N, D1","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":"230 V","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","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"2","Tripping Characteristic Class":"D","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"70 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","operational current / at AC / rated value":"1 A","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 (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4df4cdef5e30a12b593f1c83f507ac06.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=458925&mlfb=5SY8501-8"},"ai":{"faq":[{"question":"Where can I buy 5SY8501-8 and how do I get a price?","answer":"The 5SY8501-8 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will 5SY8501-8 drop into a panel specified around 5SY7210-7CC without rewiring?","answer":"The 5SY8501-8 is a 2-pole (1P+N) D-curve breaker at 1 A, while the 5SY7210-7CC is a different rating and characteristic — check the specific ratings of the existing breaker before assuming a direct swap. The 36 mm width (2 MWU) and DIN-rail mount are standard, but the tripping curve and current rating must match the circuit protection requirements."},{"question":"What compliance documentation does this brand provide for 5SY8501-8?","answer":"The 5SY8501-8 carries IEC 60947-2 certification (70 kA at 230 V AC, 15 kA DC), UL 1077 and CSA C22.2 No.235 (5 kA). It is halogen-free and silicon-free, and the SENTRON series typically provides RoHS and REACH declarations on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8501-8","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/5SY8501-8 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}}