{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SN6406-7CP","brand":"Siemens","brandSlug":"siemens","productSlug":"5SN6406-7CP","canonicalUrl":"https://aoctrl.com/siemens/5SN6406-7CP","factsUrl":"https://aoctrl.com/api/mcp/products/5SN6406-7CP","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SN6406-7CP miniature circuit breaker, 4-pole, 400 V AC, 50 Hz, 6 kA (EN 60898) / 30 kA (IEC 60947-2), 72 mm wide, 4 modular width units.","salesMarkdown":"## Siemens 5SN6406-7CP — 4-pole MCB for 400 V AC distribution The Siemens 5SN6406-7CP is a 4-pole miniature circuit breaker from the SENTRON 5SN series, rated for 400 V AC at 50 Hz and a 6 kA breaking capacity per EN 60898, with a higher 30 kA rating per IEC 60947-2 for industrial fault-current duty. The dual breaking-capacity rating means the 5SN6406-7CP is listed for both residential/infrastructure panels (6 kA per EN 60898) and industrial switchgear (30 kA per IEC 60947-2), giving the specifying engineer headroom for high-fault locations without changing the breaker footprint. DC-side rating goes to 72 V maximum — useful for control-circuit tapping off the same bus, but the primary duty is AC distribution. Terminals accept solid conductors up to 35 mm², covering most feeder and branch-circuit wire sizes in a 400 V panel. The 76 mm overall depth includes the front projection. Standard SENTRON accessory footprint — auxiliary switches, shunt trips, and under-voltage releases from the 5ST3 series clip onto the right side without increasing the width.","metaTitle":"Siemens 5SN6406-7CP MCB, 4-pole, 400 V AC, 6 kA / 30 kA","metaDescription":"Siemens SENTRON 5SN6406-7CP miniature circuit breaker, 4-pole, 400 V AC, 50 Hz, 6 kA (EN 60898) / 30 kA (IEC 60947-2), 72 mm wide, 4 MW. Active production. Sourced to order against","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":"5SN6406-7CP","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":"30 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":"1.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/69d5f1505836ef1203efcdbaf87a03c1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1647307&mlfb=5SN6406-7CP"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SN6406-7CP?","answer":"6 kA per EN 60898 and 30 kA per IEC 60947-2, giving the breaker dual certification for both residential and industrial fault-current levels."},{"question":"Will 5SN6406-7CP drop into a panel specified around 5SY5416-7 without rewiring?","answer":"Yes — the 5SN6406-7CP shares the same 72 mm width (4 MW), 70 mm installation depth, and DIN-rail mounting as the 5SY5416-7, so it fits the same enclosure footprint. The 5SY5416-7 carries a higher 10 kA EN 60898 rating and adds DC capability to 880 V, but the mechanical dimensions are identical."},{"question":"Where can I buy 5SN6406-7CP?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SN6406-7CP","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/5SN6406-7CP 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}}