{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8432-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8432-7","canonicalUrl":"https://aoctrl.com/siemens/5SY8432-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8432-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 4-pole, C-characteristic, 30 kA (IEC 60947-2), 4 MW width, halogen-free, IP20.","salesMarkdown":"The Siemens SENTRON 5SY8432-7 is a 4-pole miniature circuit breaker with a C-trip characteristic, rated for 30 kA breaking capacity per IEC 60947-2 and 15 kA at DC per the same standard. ## Ratings and compliance DC-side rating is 60 V, maximum 72 V. The C-curve (tripping characteristic class C) means it holds up to 5–10× rated current briefly — typical for motor circuits and transformer inrush where nuisance tripping must be avoided. For UL 1077 and CSA C22.2 No. 235 installations, the AC rating is 5 kA. Approvals cover IEC / EN 60947-2 and UL 1077, so the breaker is accepted across most industrial and commercial jurisdictions. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz, so it holds up on machine-mounted sub-panels. ## Integration notes Sealable with a lead seal — useful for revenue-metering or tamper-proof installations. Halogen-free and silicon-free construction, so it meets clean-room or coated-panel requirements where outgassing must be minimized.","metaTitle":"Siemens 5SY8432-7 SENTRON MCB, 4P, C-Curve, 30kA IEC","metaDescription":"Siemens 5SY8432-7 SENTRON miniature circuit breaker, 4-pole, C-trip characteristic, 30 kA breaking capacity per IEC 60947-2. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"72 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60947-2 / UL1077","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 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","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"4","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to IEC 60947-2 rated value":"30 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 multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 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":"2.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4bc50f8dc7c7d5af996c429569232d0d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=525867&mlfb=5SY8432-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY8432-7/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SY8432-7 breaking capacity?","answer":"30 kA at 400 V AC per IEC 60947-2, 15 kA at DC per the same standard, and 5 kA per UL 1077 / CSA C22.2 No. 235."},{"question":"Where can I buy the 5SY8432-7?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"Will the 5SY8432-7 fit a panel designed for the 5SY4304-7CV?","answer":"Both are 4-pole SENTRON MCBs in 4 MW width, so the 5SY8432-7 drops into the same DIN-rail footprint and busbar spacing. Verify the C-curve and breaking capacity match your application — the 5SY8432-7 carries 30 kA IEC versus the 5SY4304-7CV's lower rating."},{"question":"What compliance documentation does Siemens provide for the 5SY8432-7?","answer":"The breaker carries IEC / EN 60947-2 and UL 1077 approvals. Halogen-free and silicon-free per manufacturer declaration. Standard Siemens declarations of conformity and material compliance (RoHS, REACH) are available through the product documentation portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8432-7","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/5SY8432-7 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}}