{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6403-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6403-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SL6403-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6403-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6403-7CC, miniature circuit breaker, 4-pole, C characteristic, 3 A rated, 6 kA breaking capacity per EN 60898 at 400 V AC, 4 MW width.","salesMarkdown":"The Siemens SENTRON 5SL6403-7CC is a 4-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated 3 A and a breaking capacity of 6 kA per EN 60898 at 400 V AC. It safely clears a short-circuit up to 6 kA without welding the contacts or cascading the fault upstream — adequate for most building distribution, but check your prospective short-circuit current (PSCC) at the panel; if it exceeds 6 kA, you need a higher-rated breaker (e.g., the 10 kA variants in the same SENTRON family). For a 3 A circuit, that's 15–30 A magnetic trip threshold — typical for small transformers, lighting contactor coils, or control-circuit feeds where the load isn't purely resistive. Verify your system earthing: this breaker is designed for AC networks at 400/440 V phase-to-phase. Snap-on mounting to DIN rail EN 60715, any position. Depth behind the panel is 70 mm, total depth 76 mm — standard for the SENTRON 5SL series, so it clears most enclosure gland plates. IP20 with connected conductors (fingertip-safe terminals when wired); the front seal is sealable for anti-tamper applications. The 1.3 W power loss per pole at rated current (5.2 W total for 4 poles at full load) is modest — no special ventilation required in a standard distribution board, but factor it into your thermal budget if the panel is densely packed.","metaTitle":"Siemens 5SL6403-7CC SENTRON MCB, 4P C 3A 6kA 400V","metaDescription":"Siemens SENTRON 5SL6403-7CC miniature circuit breaker, 4-pole, C-curve, 3A, 6kA breaking capacity at 400V AC. Active production. Order against RFQ.","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":"5SL6403-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 6kA, 4-pole, C, 3A Circuit breaker 400 V 6kA, 4-pole, C, 3A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","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":"4","Tripping Characteristic Class":"C","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 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","vibration resistance according to IEC 60068-2-6":"50 m/s² at 25 to 150 Hz","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/30ebaf91390ce41344ed22b053eec81a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=529691&mlfb=5SL6403-7CC"},"ai":{"faq":[{"question":"How do I get pricing and availability for 5SL6403-7CC?","answer":"Submit an RFQ against this part number. We source the 5SL6403-7CC through independent distribution and confirm current pricing and availability at the time of your quote request."},{"question":"Will 5SL6403-7CC drop into a panel designed for 5SL4363-7?","answer":"Not without rewiring or a blanking plate. The 5SL6403-7CC is 4-pole, 72 mm wide (4 MW), while the 5SL4363-7 is 3-pole, 54 mm wide (3 MW). The depth (76 mm) and height (90 mm) are identical, and both are SENTRON DIN-rail breakers, but the 4-pole unit is 18 mm wider — it will not fit a 3-MW cutout without adaption."},{"question":"What compliance documentation does Siemens provide for 5SL6403-7CC?","answer":"The 5SL6403-7CC is designed to EN 60898 (breaking capacity 6 kA at 400 V AC) and carries the SENTRON brand's standard declarations: CE marking for the European market, and compliance with RoHS and REACH. It is rated for overvoltage category III and pollution degree 2. For specific certificates (UL, CSA, EAC), check the manufacturer's documentation package — the evidence on this listing confirms IEC/EN compliance as the primary standard."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6403-7CC","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/5SL6403-7CC 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}}