{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6550-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6550-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY6550-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6550-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6550-8CC, miniature circuit breaker, 1P+N, D characteristic, 50 A, 6 kA per EN 60898, 230 V AC, 2 MW width.","salesMarkdown":"The 5SY6550-8CC is a Siemens SENTRON miniature circuit breaker rated 50 A with a D tripping characteristic, 1-pole plus switched neutral (1P+N), and a 6 kA breaking capacity per EN 60898 at 230 V AC. The 2 MW width (36 mm) occupies two standard DIN-rail positions, and the neutral pole switches simultaneously with the line pole, so it isolates both conductors on a single-phase circuit — no separate neutral bar needed downstream. ## Deployment context The IP20 rating applies only with connected conductors — the breaker itself is open-frame, intended inside a closed enclosure. Suitability marked for mechanical engineering and industrial environments, which matches the D-curve application: conveyors, pumps, compressors, and machine-tool circuits where the load draws a high starting surge. The 50 A rating at 230 V AC covers a single-phase branch up to roughly 11.5 kW resistive or a motor load sized within the D-curve's inrush envelope. ## Compliance and approvals The breaker carries a 6 kA breaking capacity per EN 60898 and a 5 kA rating per UL 1077 and CSA C22.2 No. 235, so it is accepted in both IEC and North American control-circuit applications (though not as a branch-circuit protective device under UL 489). Vibration resistance per IEC 60068-2-6 covers ±1 mm at 5–25 Hz and 50 m/s² at 25–150 Hz — enough for machine-mounted panels near moderate vibration sources.","metaTitle":"Siemens 5SY6550-8CC SENTRON MCB, 1P+N, D Curve, 50 A, 6 kA","metaDescription":"Siemens 5SY6550-8CC SENTRON miniature circuit breaker, 1P+N, D tripping characteristic, 50 A, 6 kA breaking capacity per EN 60898. 230 V AC, 2 MW. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SY6550-8CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230 V 6kA, 1+N-pole, D, 50 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P+N","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"230 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"Yes","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","according to EN 60898 rated value":"6 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with single-phase operation at AC rated value":"250 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","supply voltage with single-phase operation at AC rated value":"230 V","power loss [W] for rated value of the current at AC in hot operating state per pole":"3.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ed38dbba5f69b29612f07e462dc06324.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=399812&mlfb=5SY6550-8CC"},"ai":{"faq":[{"question":"Where can I buy 5SY6550-8CC and how do I get a price?","answer":"The 5SY6550-8CC is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"What is 5SY6550-8CC's listed depth (76 mm) on this component line?","answer":"The 5SY6550-8CC has a depth of 76 mm, a width of 36 mm (2 MW), and a height of 90 mm. Installation depth is 70 mm, matching standard DIN-rail enclosures."},{"question":"Will 5SY6550-8CC drop into a panel that was specified around 5SY6332-7CC without rewiring?","answer":"Both are 2 MW wide SENTRON 5SY series breakers on the same DIN footprint, so the 5SY6550-8CC will physically fit the same rail and busbar position. However, the 5SY6332-7CC is a 32 A C-curve device; the 5SY6550-8CC is a 50 A D-curve. Verify that the branch circuit's conductor sizing, upstream protection, and load inrush characteristic match the D curve's higher magnetic trip threshold before substitution."},{"question":"What compliance documentation does this brand provide for 5SY6550-8CC (RoHS, REACH, UL, IEC)?","answer":"The 5SY6550-8CC is certified to EN 60898 (6 kA), UL 1077 and CSA C22.2 No. 235 (5 kA), and is halogen-free and silicon-free. Overvoltage category III and pollution degree 3 are marked. RoHS and REACH declarations are standard from Siemens for SENTRON products — request them with the order."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6550-8CC","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/5SY6550-8CC 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}}