{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL5140-7RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL5140-7RC","canonicalUrl":"https://aoctrl.com/siemens/5SL5140-7RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL5140-7RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL5140-7RC miniature circuit breaker, 1-pole, tripping characteristic C, rated 40 A at 220 V DC, 10 kA breaking capacity.","salesMarkdown":"This makes it a fit for DC distribution boards in residential and infrastructure applications — think solar combiner boxes, DC bus feeds, or telecom power supplies where a single-pole DC interruption is needed. The 220 V DC maximum rating is the key constraint: this breaker is built for DC, not AC. Many general-purpose MCBs derate significantly on DC or lack a DC rating entirely. In a DC system, arc extinction is harder than with AC (no zero-crossing), so a dedicated DC rating is essential. For grounded return DC circuits, single-pole interruption is standard. Occupies 1 modular width unit (18 mm) on DIN rail. The breaker is sealable — the toggle can be locked in the OFF position with a padlock, useful for lockout/tagout. Supplementary devices are installable, meaning auxiliary contacts, shunt trips, or undervoltage releases can be snapped onto the side without extra DIN space.","metaTitle":"Siemens 5SL5140-7RC SENTRON MCB, 1P C 40 A, 220 VDC","metaDescription":"Siemens 5SL5140-7RC SENTRON miniature circuit breaker, 1-pole, C-curve, 40 A rated at 220 VDC, 10 kA breaking capacity. Active production, sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SL5140-7RC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit-breaker 220 V DC DC 10 kA 1-pole C 40","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","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","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"220 V","Number Of Modular Width Units":"1","Tripping Characteristic Class":"C","Type Of Voltage Of The Operating Voltage":"DC","Product Extension Installable Supplementary Devices":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ae41ed86045be2545cf979cc2e21d4b1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=654115&mlfb=5SL5140-7RC"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SL5140-7RC?","answer":"The 5SL5140-7RC has a breaking capacity of 10 kA at 220 V DC. This is the maximum fault current it can safely interrupt."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL5140-7RC","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/5SL5140-7RC 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}}