{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4550-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4550-7","canonicalUrl":"https://aoctrl.com/siemens/5SY4550-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4550-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4550-7 miniature circuit breaker, 1P+N, 2-module width, C tripping characteristic, 10 kA (IEC 60898-1) / 15 kA (IEC 60947-2) breaking capacity.","salesMarkdown":"The 10 kA breaking capacity per IEC 60898-1 and 15 kA per IEC 60947-2 tell you the part can safely interrupt fault currents up to those levels — the 60947-2 figure is the one to use when the breaker is applied in an industrial panel with higher prospective fault current, while the 60898-1 rating covers the residential/commercial installation standard. Both are verified, so you don't have to guess which standard governs your application. The 5SY4550-7 occupies 2 modular width units (36 mm) on a DIN rail, with a depth of 76 mm and an installation depth of 70 mm — standard 1P+N MCB footprint that drops into any SENTRON distribution board or industrial enclosure. The quick assembly system means it snaps onto the rail without tools and the combined terminal top/bottom accepts both busbar and conductor connections. IP20 with connected conductors is the protection class, so it's intended for enclosed panel mounting, not exposed washdown areas. The breaker is certified to IEC / EN 60898-1 and IEC / EN 60947-2, and also carries UL 1077 recognition — that three-standard coverage means it's accepted in European, UK, and North American installations. The sealable design allows the panel builder to lock the toggle position after commissioning, preventing unauthorized reset.","metaTitle":"Siemens 5SY4550-7 SENTRON MCB, 1P+N, C-curve, 10kA IEC/EN 60","metaDescription":"Siemens 5SY4550-7 SENTRON miniature circuit breaker, 1P+N, 2-module width, C tripping characteristic, 10 kA per IEC 60898-1 / 15 kA per IEC 60947-2. Current production. Quoted to o","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","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","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","at DC rated value":"60 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","Energy Limitation Class":"3","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":"C","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"15 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","at DC according to IEC 60947-2 rated value":"15 kA","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/091a86cccdbeab738ae11e6842aacab1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=508153&mlfb=5SY4550-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4550-7/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY4550-7?","answer":"Submit an RFQ through this listing. We source the part through independent distribution and confirm availability and current pricing at quote time — no automated stock figure can replace a live check against the supply channel."},{"question":"Will 5SY4550-7 drop into a panel that was specified around 5SY4116-7CV without rewiring?","answer":"Both are 2-module (36 mm wide) SENTRON MCBs with the same DIN-rail footprint and terminal layout, so the mechanical fit is the same. The difference is the tripping characteristic: 5SY4550-7 is a C-curve (5-10x In), while the 5SY4116-7CV is a B-curve (3-5x In). If the original design called for B-curve magnetic trip thresholds, swapping to C-curve may cause nuisance trips on high-impedance faults or fail to coordinate with downstream devices. Check the branch circuit's inrush profile before substituting."},{"question":"What compliance documentation does this brand provide for 5SY4550-7?","answer":"The breaker carries IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077 certifications. It is halogen-free and silicon-free. Standard documentation includes a declaration of conformity covering the applicable EU directives (Low Voltage Directive, EMC) and the manufacturer's test certificates for the breaking capacity ratings."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4550-7","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/5SY4550-7 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}}