{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4204-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4204-6","canonicalUrl":"https://aoctrl.com/siemens/5SL4204-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4204-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4204-6, miniature circuit breaker, 2-pole, B characteristic, 4 A, 10 kA breaking capacity per EN 60898 / IEC 60947-2, 400 V AC.","salesMarkdown":"The Siemens 5SL4204-6 is a 2-pole SENTRON miniature circuit breaker rated 4 A with a B tripping characteristic and 10 kA breaking capacity per both EN 60898 and IEC 60947-2. That 10 kA figure is the fault current it can safely interrupt — match it to the prospective short-circuit current at the panelboard. The B-curve trips between 3 and 5 times rated current, so it's sized for resistive and general lighting loads where inrush is low; not for motor circuits that need a C or D curve. ## Panel fit and mounting Two modular width units (36 mm) on a DIN rail, 76 mm deep behind the panel face. Mounting position is unrestricted — horizontal, vertical, upside-down, the thermal-magnetic trip works the same. The IP20 rating (with connected conductors) means it's for enclosed panel use only, not for wet or dust-exposed locations. Sealable terminals are standard, so a lockable cover can be fitted to prevent tampering on metered or critical circuits. ## Environmental range Rated for ambient temperatures from -40 °C to +75 °C, which covers unheated electrical rooms and outdoor enclosures in most climates. Halogen-free and silicon-free construction — relevant for installations in clean rooms, semiconductor fabs, or areas where outgassing must be minimized. Pollution degree 2 (non-conductive pollution only) and overvoltage category III, so it's suited for fixed-installation distribution boards downstream of the main service entrance.","metaTitle":"Siemens 5SL4204-6 SENTRON MCB, 2P B-Char 4A 10kA","metaDescription":"Siemens 5SL4204-6 SENTRON miniature circuit breaker, 2-pole, B-curve, 4A, 10kA breaking capacity per EN 60898/IEC 60947-2. 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":"5SL4204-6","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 2-pole, B, 4A","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":"B","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"10 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":"1.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7404ae85aaaa1f58b9c29459ca8938a8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=180490&mlfb=5SL4204-6"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SL4204-6?","answer":"10 kA per both EN 60898 and IEC 60947-2 at 400 V AC. That rating governs its ability to clear a fault without welding contacts or rupturing the case."},{"question":"Where can I buy the 5SL4204-6?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will the 5SL4363-7 fit in place of the 5SL4204-6?","answer":"No — the 5SL4363-7 is a 3-pole, 63 A, C-curve unit that occupies 54 mm (3 width units) versus the 5SL4204-6's 36 mm (2 width units). The busbar and wiring differ, and the trip characteristic is different for the load type."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4204-6","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/5SL4204-6 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}}