{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4204-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4204-7","canonicalUrl":"https://aoctrl.com/siemens/5SL4204-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4204-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4204-7, 2-pole miniature circuit breaker, C-curve, 4 A, 400 V AC, 10 kA breaking capacity, 2 MW.","salesMarkdown":"The Siemens SENTRON 5SL4204-7 is a 2-pole miniature circuit breaker rated 4 A with a C tripping characteristic, designed for 400 V AC systems at 50/60 Hz. Its 10 kA breaking capacity is certified to both EN 60898 and IEC 60947-2, meaning it clears fault currents up to 10 kA without welding its contacts or cascading failure upstream — that's the figure that governs coordination with the upstream protective device in a distribution board. Occupies 2 modular width units (36 mm) on a DIN rail, with a depth of 76 mm and an installation depth of 70 mm. Snap-on mounting in any position — no derating for upside-down or sideways installs. C-curve trips at 5–10× rated current (20–40 A magnetic trip), so it's sized for moderate inrush loads like small motor starters, lighting banks, and transformer primaries — not for purely resistive loads (B-curve) or high-inrush drives (D-curve). The 4 A rating at 400 V AC gives 2.7 kVA per pole at unity power factor. Power loss per pole is 1.2 W in hot operating state; two poles dissipate 2.4 W total — negligible in a ventilated enclosure but worth noting if the breaker is sealed in a non-ventilated sub-panel. ## Compliance and environment Halogen-free and silicon-free construction. Sealable for lockout/tagout.","metaTitle":"Siemens 5SL4204-7 SENTRON MCB, 2P C 4A 10kA","metaDescription":"Siemens SENTRON 5SL4204-7 miniature circuit breaker, 2-pole, C-curve, 4 A, 400 V AC, 10 kA breaking capacity per EN 60898/IEC 60947-2. Active production. Sourced 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":"5SL4204-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 2-pole, C, 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":"C","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":"1.2 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$16.51","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=125836&mlfb=5SL4204-7"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SL4204-7?","answer":"10 kA per both EN 60898 and IEC 60947-2. That's the same rating for domestic and industrial certification paths."},{"question":"Where can I buy 5SL4204-7 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — no stock count or price is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4204-7","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/5SL4204-7 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}}