{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6425-7MB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6425-7MB","canonicalUrl":"https://aoctrl.com/siemens/5SL6425-7MB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6425-7MB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6 series, 5SL6425-7MB miniature circuit breaker, 4-pole, C characteristic, 25 A, 6 kA per EN 60898, 400 V AC.","salesMarkdown":"## What it is and what the ratings mean for the panel The Siemens 5SL6425-7MB is a 4-pole SENTRON miniature circuit breaker (MCB) from the 5SL6 family, rated 25 A with a C tripping characteristic and a 6 kA breaking capacity per EN 60898 at 400 V AC. The C-curve means it trips at 5 to 10 times rated current — the standard choice for motor circuits, transformers, and lighting banks with moderate inrush, not for purely resistive loads where a B-curve would be tighter. The 6 kA rating is the maximum prospective fault current it can safely interrupt; in a residential or light commercial distribution board fed by a transformer of typical impedance, that covers most downstream faults without needing a current-limiting upstream device. The 4-pole configuration (4P) switches all three phases and the neutral, though the neutral conductor is not switched internally — it is a switched-neutral MCB, meaning the neutral pole opens and closes with the phases, which is required in some regional wiring rules for TN-S systems where the neutral is not bonded to ground at the board. ## Physical fit and panel integration The 5SL6425-7MB occupies 4 width units (72 mm) on a DIN rail, with a depth of 76 mm and a height of 90 mm. Installation depth is 70 mm, meaning the body extends that far behind the rail — important when the distribution board has a shallow backplate or cable ducts running behind the row. Terminal capacity accepts 0.75 mm² to 25 mm², which covers standard building wire from 1.5 mm² lighting circuits up to 6 mm² or 10 mm² feeder tails. The IP20 rating with connected conductors is typical for enclosed distribution boards; the breaker itself is not rated for wet or dusty environments. Mounting position is any, so it can be installed horizontally if the panel layout demands it, though derating may apply per the manufacturer's thermal data if airflow is restricted.","metaTitle":"Siemens 5SL6425-7MB SENTRON MCB, 4P C 25A 6kA 400V","metaDescription":"Siemens 5SL6425-7MB SENTRON miniature circuit breaker, 4-pole, C-curve, 25 A rated current, 6 kA breaking capacity per EN 60898, 400 V AC. Active production, sourced to order. Requ","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":"5SL6425-7MB","Height":"90 mm","Maximum":"25 mm²","Minimum":"0.75 mm²","Sealable":"Yes","Rated Value":"50 Hz","description":"Miniature circuit breaker 400 V 6kA, 4-pole, C, 25A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number of poles":"4","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Design of the product":"5SL miniature circuit breakers","Number of width units":"4","Number of poles / Note":"4P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SL6","Suitability for operation":"Residential buildings/infrastructure","Current / at AC / rated value":"25 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"6 kA","Product feature / Touch protection":"Yes","Supply voltage / at AC / rated value":"400 V","with multi-phase operation / at AC / maximum":"440 V","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"250 V","Mechanical service life (switching cycles) / typical":"10 000"}},"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=250306&mlfb=5SL6425-7MB"},"ai":{"faq":[{"question":"Where can I buy the 5SL6425-7MB and get a price?","answer":"The 5SL6425-7MB 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 price and lead time."},{"question":"What is the depth of the 5SL6425-7MB?","answer":"The 5SL6425-7MB has a depth of 76 mm and an installation depth of 70 mm. This dimension is critical for panel backplate clearance behind the DIN rail."},{"question":"What is the width of the 5SL6425-7MB?","answer":"The 5SL6425-7MB has a width of 72 mm, which corresponds to 4 width units on a standard DIN rail."},{"question":"Will the 5SL6425-7MB drop into a panel specified around the 5SL6606-7YA?","answer":"No, not without rewiring. Both breakers share the same 4-pole DIN-rail footprint (72 mm width), but the 5SL6425-7MB is rated 25 A versus 6 A for the 5SL6606-7YA, and the neutral-pole switching behavior differs (vs). The conductors and upstream protection would need to be re-evaluated for the higher current rating."},{"question":"What compliance documentation is available for the 5SL6425-7MB?","answer":"The 5SL6425-7MB is designed per EN 60898 and carries an IP20 protection class with connected conductors. It is halogen-free and silicon-free. Standard Siemens SENTRON documentation includes CE declaration of conformity and RoHS/REACH compliance statements available from the manufacturer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6425-7MB","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/5SL6425-7MB 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}}