{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3210-7MB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3210-7MB","canonicalUrl":"https://aoctrl.com/siemens/5SL3210-7MB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3210-7MB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SL3210-7MB, 2-pole, C-curve, 10 A, 400 V AC, 4.5 kA breaking capacity per EN 60898.","salesMarkdown":"## Siemens 5SL3210-7MB — 2-pole C-curve 10 A MCB for 400 V distribution The Siemens 5SL3210-7MB is a SENTRON miniature circuit breaker rated 10 A with a C tripping characteristic, designed for 400 V AC multi-phase operation. Its 4.5 kA breaking capacity per EN 60898 is sized for residential and infrastructure final circuits where fault current stays below that threshold — typical for TN and TT systems in EU-standard distribution boards. Two-pole design occupies 2 modular width units (36 mm) on DIN rail, with a 76 mm depth that clears standard 80 mm deep enclosures. Snap-on mounting in any position — no derating needed for horizontal or inverted orientation. IP20 with conductors connected; install inside a distribution board or panel with a door or cover. Sealable design allows lockout-tagout compliance on the toggle. ## Breaking capacity — what the 4.5 kA rating means for your BOM The 4.5 kA rating per EN 60898 at 400 V AC is the maximum prospective short-circuit current the breaker can safely interrupt. For a panel fed by a 100 kVA transformer with ~5% impedance, the available fault current at the sub-distribution board is typically under 3 kA — this breaker has headroom. If your site has a larger transformer or a fault level above 4.5 kA, step up to the 10 kA rated 5SL4363-7 (3-pole, same SENTRON family) for the same C-curve protection. The 5SL3210-7MB carries energy limitation class 3, meaning it limits let-through energy on a fault to keep downstream equipment damage minimal.","metaTitle":"Siemens 5SL3210-7MB SENTRON MCB, 2P C 10A 400V 4.5kA","metaDescription":"Siemens 5SL3210-7MB SENTRON miniature circuit breaker, 2-pole C-curve 10 A, 400 V AC, 4.5 kA breaking capacity per EN 60898. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SL3210-7MB","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 4.5 kA, 2-pole, C, 10 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","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":"2","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","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":"1.2 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/15d6613b481f52c03ac90840ebb4048e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=535563&mlfb=5SL3210-7MB"},"ai":{"faq":[{"question":"Where can I buy 5SL3210-7MB and what is the price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no public list price on this channel."},{"question":"What is the closest functional alternative — 5SL4363-7?","answer":"The 5SL4363-7 is a 3-pole version with a 10 kA breaking capacity (vs. 4.5 kA on this 2-pole unit). Both share the same 76 mm depth, C-curve, and SENTRON platform. The 5SL4363-7 occupies 3 MW instead of 2 MW and has higher per-pole power loss (5 W vs. 1.2 W). If your panel was wired for a 2-pole breaker, the 5SL4363-7 will not drop in without rewiring the neutral and adding a module width."},{"question":"What compliance documentation does Siemens provide for 5SL3210-7MB?","answer":"RoHS, REACH, and CE declarations are standard with the shipment. The breaker is designed to EN 60898 and carries overvoltage category III with pollution degree 2 — suitable for fixed-installation distribution boards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3210-7MB","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/5SL3210-7MB 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}}