{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SN6432-8CP","brand":"Siemens","brandSlug":"siemens","productSlug":"5SN6432-8CP","canonicalUrl":"https://aoctrl.com/siemens/5SN6432-8CP","factsUrl":"https://aoctrl.com/api/mcp/products/5SN6432-8CP","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SN6432-8CP, 4-pole miniature circuit breaker, C-curve, 400 V AC, 50 Hz, 6 kA (EN 60898) / 15 kA (IEC 60947-2), 4 MW units, 72 mm wide.","salesMarkdown":"## Siemens SENTRON 5SN6432-8CP — 4-Pole MCB, C-Curve The 4-pole construction (all poles switched and protected) makes this unit suitable for three-phase plus neutral circuits — common in distribution boards feeding mixed single-phase and three-phase loads. For DC circuits, the maximum rated voltage is 72 V — a figure to verify if the breaker is used in a DC distribution sub-panel. Height is 90 mm. This matches the standard SENTRON 5SN series envelope, so it drops into existing distribution boards without re-spacing the DIN rail or altering gland-plate clearance. The terminal accepts solid conductors up to 35 mm², sufficient for most sub-feed or feeder circuits in a commercial panel. ## Thermal and Lifecycle Considerations Per-pole power dissipation is 2.1 W at rated current in the hot operating state. For a 4-pole breaker under full load, that totals 8.4 W of heat to vent inside the enclosure — a factor when calculating cabinet temperature rise and de-rating adjacent devices.","metaTitle":"Siemens 5SN6432-8CP SENTRON MCB, 4-Pole, C-Curve, 6kA/15kA","metaDescription":"Siemens SENTRON 5SN6432-8CP 4-pole miniature circuit breaker, C-curve, 6 kA per EN 60898, 15 kA per IEC 60947-2. Active production. Sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SN6432-8CP","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","description":"MCB 5SN","Number Of Poles":"4","lifecycle_stage":"current","Installation Depth":"70 mm","at DC rated value maximum":"72 V","Number Of Modular Width Units":"4","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 kA","Supply Voltage Frequency Rated Value":"50 Hz","according to IEC 60947-2 rated value":"15 kA","with multi-phase operation at AC maximum":"440 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","Connectable Conductor Cross-Section Solid Maximum":"35 mm²","Mechanical Service Life (Operating Cycles) Typical":"10 000","power loss [W] for rated value of the current at AC in hot operating state per pole":"2.1 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/93c009bf547d903334bbb8d7bc65afee.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1647318&mlfb=5SN6432-8CP"},"ai":{"faq":[{"question":"What are the breaking capacity ratings for 5SN6432-8CP?","answer":"Per EN 60898, the rated breaking capacity is 6 kA. Per IEC 60947-2, the rated breaking capacity is 15 kA. The higher IEC figure applies when the breaker is installed in an industrial panel with a defined fault-current study."},{"question":"What is the difference between 5SN6432-8CP and the 3-pole 5SL4363-7?","answer":"The 5SN6432-8CP is a 4-pole MCB (72 mm wide, 4 MW units). The 5SL4363-7 is a 3-pole MCB (54 mm wide, 3 MW units). Both share the same 90 mm height, 76 mm depth, and 70 mm installation depth. The 5SL4363-7 carries a higher EN 60898 rating (10 kA) but a lower IEC 60947-2 rating (10 kA). If your panel was laid out for a 3-pole unit, the 4-pole 5SN6432-8CP will not fit without an additional 18 mm of DIN-rail space."},{"question":"Where can I buy 5SN6432-8CP?","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 — submit an RFQ for a firm position."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SN6432-8CP","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/5SN6432-8CP 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}}