{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SN6125-7CP","brand":"Siemens","brandSlug":"siemens","productSlug":"5SN6125-7CP","canonicalUrl":"https://aoctrl.com/siemens/5SN6125-7CP","factsUrl":"https://aoctrl.com/api/mcp/products/5SN6125-7CP","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SN6125-7CP, 1-pole miniature circuit breaker, C-curve, 15 kA (IEC 60947-2) / 6 kA (EN 60898), 400 V AC, 72 V DC, 18 mm width.","salesMarkdown":"## Siemens 5SN6125-7CP — 1-Pole MCB, C-Curve, Dual Breaking Capacity Rated at 400 V AC (multi-phase, 50 Hz) and 72 V DC maximum, it fits standard European 400/230 V distribution panels. The single modular width unit (18 mm) and 76 mm depth match the standard DIN-rail envelope — drops straight into any SENTRON or compatible sub-distribution board. Terminal capacity accepts solid conductors up to 35 mm², sized for the feeder side of a sub-panel. The 5SN6125-7CP carries a current lifecycle status. No official successor order code is on record, so the existing order code remains the correct BOM line item. ## Panel Fit & Deployment Snap-on DIN-rail mount, 18 mm width per pole, 76 mm depth — fits standard SENTRON enclosures and most third-party distribution boards. Installation depth is 70 mm, leaving 6 mm for wiring clearance behind the busbar. ## Coordination & Selectivity The 15 kA IEC 60947-2 rating provides selectivity headroom over downstream 6 kA rated MCBs in a typical two-level distribution.","metaTitle":"Siemens 5SN6125-7CP MCB, 1-Pole C-Curve, 15 kA IEC, 6 kA EN","metaDescription":"Siemens 5SN6125-7CP 1-pole MCB, C-curve. 15 kA per IEC 60947-2, 6 kA per EN 60898. 400 V AC, 72 V DC. 18 mm wide. Current lifecycle. Sourced 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":"18 mm","title":"5SN6125-7CP","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","description":"MCB 5SN","Number Of Poles":"1","lifecycle_stage":"current","Installation Depth":"70 mm","at DC rated value maximum":"72 V","Number Of Modular Width Units":"1","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":"2.2 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1eddaf3547e43f4c95aa588ae4ba7a2b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1647233&mlfb=5SN6125-7CP"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SN6125-7CP","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/5SN6125-7CP 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}}