{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3325-7MB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3325-7MB","canonicalUrl":"https://aoctrl.com/siemens/5SL3325-7MB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3325-7MB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL3325-7MB, miniature circuit breaker, 3-pole, tripping characteristic C, 25 A, 400 V AC, 4.5 kA per EN 60898, 3 MW units.","salesMarkdown":"## What it is and what it does The Siemens 5SL3325-7MB is a SENTRON miniature circuit breaker (MCB) with three poles, a C tripping characteristic, and a 25 A rated current at 400 V AC. It breaks fault currents up to 4.5 kA per EN 60898 — the standard that governs overcurrent protection in residential and commercial final circuits. The C-curve means it trips between 5 and 10 times rated current, so it handles moderate inrush from small motors or transformers without nuisance tripping, while still clearing a hard short fast enough to protect the downstream cable. Rated for use in residential buildings and infrastructure, it fits a standard 3-module-width DIN-rail slot (54 mm wide, 76 mm deep, 90 mm tall) and can be mounted in any orientation. The IP20 rating with connected conductors means it's protected against finger contact once wired, but it needs to live inside an enclosure — standard practice for this class. ## What the ratings mean for fit The 4.5 kA breaking capacity at 400 V AC is the figure that governs fault clearance in a residential or light-commercial panel. It's not a high-fault rating — if your service entrance has a prospective short-circuit current above 4.5 kA, you need a current-limiting upstream device or a higher-rated MCB. The C-curve is the standard choice for general-purpose socket circuits and small inductive loads; don't use it for purely resistive loads where a B-curve would give tighter protection, or for heavy motor starts where a D-curve is needed. Operating temperature range spans -40 °C to 75 °C, which covers unheated utility rooms and outdoor enclosures in most climates. The 2.2 W power loss per pole at rated current matters when you're packing multiple MCBs in a row — derating in a crowded enclosure is real, and that figure is what you use for the thermal budget. Sealable design lets you lock the toggle in the off position for lockout/tagout. Halogen-free and silicon-free construction means no corrosive off-gassing in a confined panel — relevant for installations near sensitive electronics or in process areas where silicone contamination fouls contacts. ## Integration and mounting Snaps onto standard 35 mm DIN rail. Three modular width units at 54 mm total width — plan your enclosure fill accordingly. Installation depth is 70 mm, so a 100 mm deep enclosure leaves enough finger-room for wiring. Supplementary devices (auxiliary switches, shunt trips, alarm contacts) can be ganged on the right side. Overvoltage category III and pollution degree 2 are the standard ratings for fixed-installation distribution boards — no special handling required beyond normal panel practice.","metaTitle":"Siemens 5SL3325-7MB SENTRON MCB, 3P C 25A, 4.5kA","metaDescription":"Siemens 5SL3325-7MB SENTRON miniature circuit breaker, 3-pole, C-curve, 25 A, 4.5 kA breaking capacity per EN 60898. Active production, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"54 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","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":"3","Tripping Characteristic Class":"C","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"4.5 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","with single-phase operation at AC rated value":"250 V","vibration resistance according to IEC 60068-2-6":"no","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":"2.2 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=244237&mlfb=5SL3325-7MB","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL3325-7MB/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SL3325-7MB and get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What is the depth of the 5SL3325-7MB?","answer":"The 5SL3325-7MB has a depth of 76 mm and an installation depth of 70 mm."},{"question":"Will the 5SL3325-7MB drop into a panel specified for the 5SL4363-7?","answer":"Yes — both share identical dimensions (76 mm depth, 54 mm width, 90 mm height), the same 3-pole form factor, and the same DIN-rail mounting. The 5SL4363-7 carries a 10 kA breaking capacity versus 4.5 kA on this part, so the panel's fault rating must be verified against the lower value."},{"question":"What compliance documentation does Siemens provide for the 5SL3325-7MB?","answer":"The part is halogen-free and silicon-free, and carries the standard SENTRON approvals for CE-marked distribution boards. Specific RoHS/REACH declarations and UL/IEC certificates are available from the manufacturer's documentation portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3325-7MB","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/5SL3325-7MB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}