{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SN6203-7CP","brand":"Siemens","brandSlug":"siemens","productSlug":"5SN6203-7CP","canonicalUrl":"https://aoctrl.com/siemens/5SN6203-7CP","factsUrl":"https://aoctrl.com/api/mcp/products/5SN6203-7CP","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SN6203-7CP miniature circuit breaker, 2-pole, 400 V AC, 6 kA (EN 60898) / 30 kA (IEC 60947-2), 72 V DC, 2 MWU, -40 to 75 °C.","salesMarkdown":"Compared to the 5SU9354-7KK16 (an RCBO with 1P+N, 10 kA EN 60898, 230/240 V AC), the 5SN6203-7CP is a straight MCB — no residual-current protection, but it handles 400 V AC and delivers 30 kA under IEC 60947-2 versus the RCBO's 10 kA. If the panel needs a 2-pole breaker on a 400 V line with higher fault capacity and no RCD function, the 5SN6203-7CP is the fit; if you need combined overcurrent and earth-leakage protection on a single-phase circuit, the 5SU9354-7KK16 is the RCBO. Different jobs, same DIN-rail footprint and 2 MWU width. Accepts solid conductors up to 35 mm² — enough for the load side of a 2-pole 400 V feeder. The 440 V AC maximum with multi-phase or single-phase operation covers nominal 400 V systems plus tolerance. For DC circuits, the 72 V maximum is the limit; above that, use a DC-rated breaker.","metaTitle":"Siemens 5SN6203-7CP MCB 2-Pole, 400 V AC, 6 kA EN 60898","metaDescription":"Siemens 5SN6203-7CP miniature circuit breaker, 2-pole, 400 V AC, 6 kA per EN 60898 / 30 kA per IEC 60947-2. Active production, sourced to order. Request a quote.","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":"5SN6203-7CP","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","description":"MCB 5SN","Number Of Poles":"2","lifecycle_stage":"current","Installation Depth":"70 mm","at DC rated value maximum":"72 V","Number Of Modular Width Units":"2","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 kA","Supply Voltage Frequency Rated Value":"50 Hz","according to IEC 60947-2 rated value":"30 kA","with multi-phase operation at AC maximum":"440 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","Connectable Conductor Cross-Section Solid Maximum":"35 mm²","Mechanical Service Life (Operating Cycles) Typical":"10 000","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/8275bcf9db69fcf03c7b78b5a3c2e814.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1647247&mlfb=5SN6203-7CP"},"ai":{"faq":[{"question":"Where can I buy 5SN6203-7CP and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit a request for quote through this listing."},{"question":"What is 5SN6203-7CP's listed depth?","answer":"The depth is 76 mm, with an installation depth of 70 mm (the depth behind the panel face)."},{"question":"What is 5SN6203-7CP's listed width?","answer":"The width is 36 mm, which corresponds to 2 modular width units on a standard DIN rail."},{"question":"Will 5SN6203-7CP drop into a panel specified around 5SU9354-7KK16 without rewiring?","answer":"Both parts share the same 36 mm width (2 MWU) and DIN-rail mounting, so the mechanical fit is identical. However, the 5SN6203-7CP is a 2-pole MCB rated for 400 V AC, while the 5SU9354-7KK16 is a 1P+N RCBO at 230/240 V. The wiring and protection scheme differ — verify the circuit voltage and protection requirements before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SN6203-7CP","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/5SN6203-7CP 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}}