{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1353-0KV40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1353-0KV40","canonicalUrl":"https://aoctrl.com/siemens/5SU1353-0KV40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1353-0KV40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1353-0KV40, FI/LS protector Type AC (WS), D=70mm, IΔn 30mA, 4.5kA, 1+N-pole, B-curve 40A.","salesMarkdown":"The Siemens 5SU1353-0KV40 is a combined residual-current and miniature circuit breaker (RCBO / FI/LS protector) that packs an RCD and an MCB into a single 1+N-pole module. It is listed as Type AC (wave shape) with a rated residual operating current IΔn of 30 mA and a short-circuit breaking capacity of 4.5 kA. The B-curve trip characteristic at 40 A means it handles general-purpose resistive and light inductive loads in a distribution board — the magnetic trip kicks in between 3 and 5 times rated current, so it clears fast on a hard fault without nuisance-tripping on motor inrush. The 4.5 kA short-circuit capacity is adequate for domestic and light commercial sub-distribution where the prospective fault current at the board is below that level; for industrial panels with higher fault levels, a device with a higher Icn (e.g., 6 kA or 10 kA) would be specified.","metaTitle":"Siemens 5SU1353-0KV40 FI/LS Protector, Type AC, 30mA, 40A B-","metaDescription":"Siemens 5SU1353-0KV40 FI/LS protector, Type AC, 30mA, 4.5kA, 1+N-pole B 40A. Current lifecycle stage. Sourced 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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=498536&mlfb=5SU1353-0KV40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1353-0KV40/alternatives.json"},"ai":{"faq":[{"question":"What does the description 'FI/LS-PROTECTOR TYPE AC (WS), D=70MM IFN 30MA, 4.5KA, 1+N-POLE B 40A' mean?","answer":"It is a combined RCD/MCB (RCBO) with Type AC residual-current detection (sinusoidal AC only), a width of 70 mm (4 modules), a rated residual current of 30 mA, a short-circuit breaking capacity of 4.5 kA, a 1+N-pole configuration (switched phase and neutral), and a B-curve overcurrent trip at 40 A."},{"question":"Where can I buy the 5SU1353-0KV40 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at the time of quote — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1353-0KV40","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/5SU1353-0KV40 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}}