{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6203-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6203-7","canonicalUrl":"https://aoctrl.com/siemens/5SL6203-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6203-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6203-7, miniature circuit breaker, 2-pole, C-curve, 3 A, 6 kA breaking capacity, 400 V AC, 2 MW units.","salesMarkdown":"## What this breaker brings to a panel The Siemens 5SL6203-7 is a 2-pole SENTRON miniature circuit breaker rated at 3 A with a C-curve trip characteristic and a 6 kA breaking capacity per both EN 60898 and IEC 60947-2. The 2-pole design makes it a straight fit for single-phase 230/400 V circuits or two-phase 400 V loads — common in lighting panels, small distribution boards, or HVAC equipment. The 3 A rating is low for a 2-pole MCB — think lighting strips, control transformers, or small resistive loads where you want tight overcurrent protection without nuisance trips. At 6 kA SCCR it interrupts faults up to that level safely; in a panel fed by a transformer with a higher available fault current, you'd need a current-limiting upstream breaker or a higher-rated MCB like the 5SL4363-7 (10 kA). The 2 MW width means it occupies two 18 mm positions on the DIN rail — check your enclosure fill factor if you're swapping from a single-pole device. Snaps onto DIN rail, any mounting position. Overall dimensions: 36 mm wide (2 MW), 90 mm high, 76 mm deep. Installation depth is 70 mm.","metaTitle":"Siemens 5SL6203-7 SENTRON MCB, 2-pole C-curve 3 A 6 kA","metaDescription":"Siemens 5SL6203-7 SENTRON miniature circuit breaker, 2-pole, C-curve, 3 A, 6 kA breaking capacity per EN 60898 & IEC 60947-2, 400/440 V AC. 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":"5SL6203-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 6kA, 2-pole, C, 3A","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":"6 kA","according to IEC 60947-2 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","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":"$13.97","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/11ee2dc4c1cacb91e4cc204c5ea1e4d7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=432193&mlfb=5SL6203-7"},"ai":{"faq":[{"question":"Will the 5SL6203-7 drop into a panel specified for the 5SL6220-7?","answer":"Yes, the 5SL6203-7 shares the same physical footprint (76 mm depth, 36 mm width, 90 mm height) and 2-pole DIN-rail mounting as the 5SL6220-7. The only functional difference is the current rating — 3 A here versus 20 A on the sibling. No rewiring or panel modification is needed for the swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6203-7","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/5SL6203-7 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}}