{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9353-7CR20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9353-7CR20","canonicalUrl":"https://aoctrl.com/siemens/5SU9353-7CR20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9353-7CR20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU9353-7CR20 RCBO, 1P+N, Type A, 30 mA, C-Char, In: 20 A, Icn: 4,5 kA, Un AC: 230 V.","salesMarkdown":"The Siemens 5SU9353-7CR20 is a 1-pole-plus-neutral residual current circuit breaker with overcurrent protection (RCBO) rated at 20 A with a C-trip characteristic and 30 mA Type A residual sensitivity. The 4.5 kA breaking capacity (Icn) at 230 V AC covers standard commercial and light industrial final circuits where the prospective short-circuit current stays under that threshold — typical for distribution boards fed by a transformer of moderate kVA rating. ## Ratings and deployment context The C-curve (C-Char) means the magnetic trip fires at 5 to 10 times In (100–200 A), suited for loads with moderate inrush like small motor starters, lighting banks, or socket-outlet circuits. Type A RCD detects pulsating DC residual currents plus sinusoidal AC — the minimum for circuits with single-phase rectified loads (washing machines, LED drivers, IT equipment). The 30 mA sensitivity provides additional shock protection in wet or high-integrity locations.","metaTitle":"Siemens 5SU9353-7CR20 RCBO, 20A, 30mA Type A, 4.5kA","metaDescription":"Siemens 5SU9353-7CR20 RCBO, 1P+N, 20A C-curve, 30mA Type A RCD, 4.5kA breaking capacity. Current lifecycle stage. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/79f6610cfebb3bc98ed563eb1e55c601.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1440221&mlfb=5SU9353-7CR20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9353-7CR20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SU9353-7CR20 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing."},{"question":"What are the key ratings of 5SU9353-7CR20?","answer":"It is a 1P+N RCBO with 20 A C-curve overcurrent protection, 30 mA Type A residual current detection, 4.5 kA breaking capacity at 230 V AC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9353-7CR20","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/5SU9353-7CR20 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}