{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6425-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6425-6","canonicalUrl":"https://aoctrl.com/siemens/5SL6425-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6425-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6425-6, miniature circuit breaker, 4-pole, B-curve, 25 A, 6 kA breaking capacity per EN 60898 / IEC 60947-2, 400/440 V AC, 4 MW wide.","salesMarkdown":"## What this 4-pole B-curve MCB does in the panel At 25 A per pole, it handles a 400 V three-phase feeder or a 230/400 V split-phase subfeed in a residential or light-commercial distribution board. ## DIN-rail fit and panel integration The 72 mm width (4 MW) occupies four 18 mm module spaces; plan your enclosure fill accordingly. ## How it compares to the 3-pole C-curve sibling The closest functional peer in the same SENTRON family is the 5SL4363-7 — a 3-pole, C-curve, 10 kA unit. The 5SL6425-6 is 4-pole and B-curve, so it won't drop into a panel wired for 5SL4363-7 without rewiring the neutral leg and checking the trip coordination. The 6 kA vs 10 kA breaking capacity means this unit is suited for lower fault-current installations; if your panel's prospective short-circuit current exceeds 6 kA, step up to the 10 kA sibling or a higher-rated SENTRON variant.","metaTitle":"Siemens 5SL6425-6 SENTRON MCB, 4P, B-Curve, 25A, 6kA","metaDescription":"Siemens 5SL6425-6 SENTRON miniature circuit breaker, 4-pole, B characteristic, 25 A, 6 kA per IEC 60898. Active production. Available to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SL6425-6","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 6kA, 4-pole, B, 25A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Energy Limitation Class":"3","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"4","Tripping Characteristic Class":"B","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 kA","according to IEC 60947-2 rated value":"6 kA","Type Of Voltage Of The Operating Voltage":"AC","with multi-phase operation at AC maximum":"440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"440 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"2.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f89338303db62cb8c7aaf733803ebb7d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=317338&mlfb=5SL6425-6"},"ai":{"faq":[{"question":"Where can I buy 5SL6425-6 and get a price?","answer":"We source the 5SL6425-6 to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit a request and we'll return a firm quotation with lead time."},{"question":"Will 5SL6425-6 drop into a panel specified for 5SL4363-7?","answer":"No — the 5SL6425-6 is 4-pole (72 mm wide) versus the 5SL4363-7's 3-pole (54 mm wide). It also carries a B-curve instead of C-curve and 6 kA instead of 10 kA breaking capacity. The panel would need rewiring for the neutral pole and a trip-coordination check before substitution."},{"question":"What compliance documentation does Siemens provide for 5SL6425-6?","answer":"The 5SL6425-6 carries approvals per EN 60898 and IEC 60947-2, with a 6 kA rated breaking capacity under both standards. It is rated for overvoltage category III, pollution degree 2, and the SENTRON series typically includes CE, UKCA, and EAC declarations. Specific RoHS and REACH declarations are available from Siemens documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6425-6","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/5SL6425-6 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}}