{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL5203-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL5203-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SL5203-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL5203-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SL5203-7CC, 2-pole, C-curve, 3 A rated, 250 V DC, 10 kA breaking capacity.","salesMarkdown":"The Siemens SENTRON 5SL5203-7CC is a 2-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated at 3 A for 250 V DC circuits and a 10 kA breaking capacity. It is designed for DC applications in residential and infrastructure installations, where overcurrent and short-circuit protection is needed on a 2-wire DC supply. ## DC rating and what it means for fit The C-curve (trips at 5–10× rated current) handles moderate inrush, typical for resistive and some capacitive DC loads. The 3 A rating means it protects a 3 A DC branch; if your BOM calls for a higher current, the 5SL6550-7BB carries a 50 A rating in the same 2-pole C-curve family, but at 6 kA DC breaking capacity — lower fault interruption capability. The 2-pole design switches both conductors in a DC circuit, which is necessary for full isolation and fault clearing. Single-pole DC breakers can leave a floating live conductor; this avoids that. Width is 36 mm (2 modular units), depth 76 mm, height 90 mm, with an installation depth of 70 mm. ## Installation and compliance notes The breaker is sealable, allowing panel builders to lock the toggle position after commissioning.","metaTitle":"Siemens 5SL5203-7CC SENTRON MCB, 2P C3 250V DC 10kA","metaDescription":"Siemens SENTRON 5SL5203-7CC miniature circuit breaker, 2-pole, C-curve, 3 A, 250 V DC, 10 kA breaking capacity. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SL5203-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit-breaker 250 V DC DC 10 kA 2-pole C3","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","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"2","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/9e652168a7a9b1455bb562618db326d0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=694695&mlfb=5SL5203-7CC"},"ai":{"faq":[{"question":"Will 5SL5203-7CC drop into a panel specified around 5SL6550-7BB?","answer":"Yes — both are 2-pole, 36 mm wide, 76 mm deep, and mount on DIN rail. The physical footprint is identical. No rewiring of the busbar or DIN rail position is needed."},{"question":"What compliance documentation does Siemens provide for 5SL5203-7CC?","answer":"The part carries a halogen-free and silicon-free declaration. For full compliance documentation (RoHS, REACH, UL, IEC declarations), these are available from Siemens upon request as part of the standard SENTRON MCB technical documentation package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL5203-7CC","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/5SL5203-7CC 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}}